Toyota Tundra Service Manual: Dtc Combination Table

DTC COMBINATION TABLE

HOW TO INTERPRET COMMUNICATION DTCS (DTCS THAT START WITH U)

(a) If a CAN communication error cannot be reproduced, determine the suspected malfunctioning part using the DTCs stored in ECUs that are connected to the CAN buses by following the procedure below.

HINT:

Communication DTCs (DTCs that start with U) indicate a communication error between the ECU that stores the DTC and the ECU that is indicated by the DTC.

(1) If multiple ECUs store a communication DTC for a particular ECU, a communication stop of the ECU is suspected.

*a

Items to be Checked

-

-

NOTICE:

  • This DTC table is from another model, and is only used here to show an example of DTCs that are output when there is an open in a CAN branch line for the main body ECU. This table does not show DTCs applicable to this vehicle.
  • Even though a DTC title may indicate a communication error with a specific ECU, the ECU name used in the DTC name on the Techstream may differ depending on the ECU that stores the DTC. (Regarding output DTCs, refer to DTC Table by ECU.)

    Click here

HINT:

As multiple ECUs indicate a communication stop with the main body ECU, the possibility of a communication stop of the main body ECU is high.

(2) If almost all of the communication DTCs of an ECU are stored, a communication stop of the ECU is suspected.

*a

Items to be Checked

-

-

NOTICE:

  • This DTC table is from another model, and is only used here to show an example of DTCs that are output when there is an open in a CAN branch line for the main body ECU. This table does not show DTCs applicable to this vehicle.
  • Even though a DTC title may indicate a communication error with a specific ECU, the ECU name used in the DTC name on the Techstream may differ depending on the ECU that stores the DTC.

    Click here

HINT:

  • If almost all of the DTCs of the main body ECU are stored, the possibility of a communication stop of the main body ECU is high.
  • When a CAN communication error occurs, many DTCs are output. DTCs other than communication error DTCs (such as DTCs that start with C or B) and communication DTCs for the ABS system are important DTCs, however it may be easier to determine the malfunctioning part by examining the overall situation without considering these DTCs.

(b) To help determine the part of the sub bus that has a communication error, prioritize the communication stop DTCs stored in the gateway function equipped ECU.

*a

Items to be Checked

*b

ECM

*c

Gateway function equipped ECU

*d

Location of malfunction

*e

Central bus

*f

Sub bus

NOTICE:

This DTC table is from another model, and is only used here to show the ECUs connected to both a central bus and a sub bus. It shows DTCs output when there is an open in the main bus lines for the ECM on the sub bus. This table does not show DTCs applicable to this vehicle.

HINT:

  • As gateway function equipped ECUs (sub bus monitor ECU) monitor signals from all ECUs that are connected to sub buses, gateway function equipped ECUs can detect ECUs with a communication stop more accurately.
  • When there is a communication stop for the gateway function equipped ECU (gateway), communication with ECUs connected to other buses such as the central bus stops. Therefore, communication DTCs for ECUs connected to other buses are also stored.

(c) When any of the following malfunctions occurs, many DTCs are likely to be output from many ECUs. Because of this, it may be difficult to determine the probable malfunctioning part.

  • Short between CAN lines (CANH and CANL)
  • Short between a CAN line (CANH or CANL) and ground
  • Short between a CAN line (CANH or CANL) and +B
  • Open in a CAN branch line (CANH or CANL) of an ECU or sensor
  • Open in a CAN main bus line (CANH or CANL) between 2 ECUs that have a terminating resistor

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 1, PAST COMMUNICATION ERROR)

(a) If DTCs indicating a past communication error of an ECU or sensor connected to Bus 1 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

HINT:

  • Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
  • If there is an open in a CAN branch line or a communication stop in currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the Techstream to determine which ECU or sensor that is connected to the open branch line is not responding (the ECU or sensor has a background color of red).
  • ○: DTC is output.
  • -: DTC is not output.
  • *1: DTC U0073 may be stored when communication is lost.
  • *2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
  • If an open occurs in just one of the wires of a CAN branch line, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
  • If an open occurs in just one of the wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.

-

Trouble Mode

Open in CAN branch line(s)

Output ECU

Output DTC

Front Camera Module Communication Stop Mode

Millimeter Wave Radar Sensor Communication Stop Mode

Blind Spot Monitor Sensor Communication Stop Mode

Bus 1

Forward Recognition Camera

U0100

-

-

U0101

-

-

U0123

-

-

U0126

-

-

U0129

-

-

U0142

-

-

U0155

-

-

Millimeter Wave Radar Sensor Assembly

U0100

-

-

U0125

-

-

U0126

-

-

U0129

-

-

U0137

-

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

-

U0125

-

-

U0126

-

-

U0129

-

-

U0142

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 2

ECM

U0100

-

-

-

U0122

-

-

-

U0137

-

-

-

U0155

-

-

-

U1104

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

-

-

U0129

-

-

-

U0140

-

-

-

U0155

-

-

-

U0164

-

-

-

Navigation Receiver Assembly*1

U0100

-

-

-

U0129

-

-

-

U0140

-

-

-

U0155

-

-

-

U0164

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

-

-

U0122

-

-

-

U0416

-

-

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

-

-

U0114

-

-

-

U0123

-

-

-

U0126

-

-

-

Brake Control with Bracket Relay*1

U0123

-

-

-

U0129

-

-

-

U0155

-

-

-

Tire Pressure Warning ECU and Receiver

U0129

-

-

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

-

-

Airbag Sensor Assembly

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0199

-

-

-

U0200

-

-

-

U0208

-

-

-

U023A

-

-

U1002

-

-

-

U1115

-

-

-

Air Conditioning Amplifier Assembly

B1499

-

-

-

Combination Meter Assembly

U0100

-

-

-

U0129

-

-

-

U0142

-

-

-

U0151

-

-

-

U0163

-

-

-

U0235

-

-

U023A

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0199

-

-

-

U0200

-

-

-

U0208

-

-

-

U023A

-

-

U1002

-

-

-

U1115

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

Multiplex Tilt and Telescopic ECU

U0142

-

-

-

U0208

-

-

-

B2621

-

-

-

B2624

-

-

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

-

-

-

Trouble Mode

Open in CAN main line(s)

Output ECU

Output DTC

Central Gateway ECU (Network Gateway ECU)

(CA1H and CA1L Terminals)

No. 2 CAN Junction Connector to No. 1 CAN Junction Connector

No. 1 CAN Junction Connector to No. 7 CAN Junction Connector

No. 7 CAN Junction Connector to No. 1 CAN Junction Terminal

Bus 1

Forward Recognition Camera

U0100

-

-

-

-

U0101

-

-

-

-

U0123

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

U0155

-

-

-

-

Millimeter Wave Radar Sensor Assembly

U0100

-

-

-

-

U0125

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0137

-

-

-

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

-

-

-

U0125

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 2

ECM

U0100

-

-

-

-

U0122

-

-

-

-

U0137

-

-

-

-

U0155

-

-

-

-

U1104

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

-

-

-

U0129

-

-

-

-

U0140

-

-

-

-

U0155

-

-

-

-

U0164

-

-

-

-

Navigation Receiver Assembly*1

U0100

-

-

-

-

U0129

-

-

-

-

U0140

-

-

-

-

U0155

-

-

-

-

U0164

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

-

-

-

U0122

-

-

-

-

U0416

-

-

-

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

-

-

-

U0114

-

-

-

-

U0123

-

-

-

-

U0126

-

-

-

-

Brake Control with Bracket Relay*1

U0123

-

-

-

-

U0129

-

-

-

-

U0155

-

-

-

-

Tire Pressure Warning ECU and Receiver

U0129

-

-

-

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

-

-

-

Airbag Sensor Assembly

-

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

-

U0101

-

-

-

-

U0151

-

-

-

-

U0155

-

-

-

-

U0199

-

-

-

-

U0200

-

-

-

-

U0208

-

-

-

-

U023A

-

-

-

-

U1002

-

-

-

-

U1115

-

-

-

-

Air Conditioning Amplifier Assembly

B1499

-

-

-

-

Combination Meter Assembly

U0100

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

U0151

-

-

-

-

U0163

-

-

-

-

U0235

-

-

-

-

U023A

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

-

U0101

-

-

-

-

U0151

-

-

-

-

U0155

-

-

-

-

U0199

-

-

-

-

U0200

-

-

-

-

U0208

-

-

-

-

U023A

-

-

-

-

U1002

-

-

-

-

U1115

-

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

-

Multiplex Tilt and Telescopic ECU

U0142

-

-

-

-

U0208

-

-

-

-

B2621

-

-

-

-

B2624

-

-

-

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

-

-

-

-

Trouble Mode

CAN bus lines short circuit or short to GND

Output ECU

Output DTC

CANH-CANL

CANH-GND

CANL-GND

Bus 1

Forward Recognition Camera

U0100

-

U0101

-

U0123

-

U0126

-

U0129

-

U0142

-

U0155

-

Millimeter Wave Radar Sensor Assembly

U0100

-

U0125

-

U0126

-

U0129

-

U0137

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

U0125

-

U0126

-

U0129

-

U0142

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 2

ECM

U0100

-

U0122

-

U0137

-

U0155

-

U1104

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

U0129

-

U0140

-

U0155

-

U0164

-

Navigation Receiver Assembly*1

U0100

-

U0129

-

U0140

-

U0155

-

U0164

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

U0122

-

U0416

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

U0114

-

U0123

-

U0126

-

Brake Control with Bracket Relay*1

U0123

-

U0129

-

U0155

-

Tire Pressure Warning ECU and Receiver

U0129

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

Airbag Sensor Assembly

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

U0101

-

U0151

-

U0155

-

U0199

-

U0200

-

U0208

-

U023A

-

U1002

-

U1115

-

Air Conditioning Amplifier Assembly

B1499

-

Combination Meter Assembly

U0100

-

U0129

-

U0142

-

U0151

-

U0163

-

U0235

-

U023A

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

U0101

-

U0151

-

U0155

-

U0199

-

U0200

-

U0208

-

U023A

-

U1002

-

U1115

-

Outer Mirror Control ECU Assembly LH

U0142

-

Outer Mirror Control ECU Assembly RH

U0142

-

Multiplex Tilt and Telescopic ECU

U0142

-

U0208

-

B2621

-

B2624

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 2, PAST COMMUNICATION ERROR)

(a) If DTCs indicating a past communication error of an ECU or sensor connected to Bus 2 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

HINT:

  • Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
  • If there is an open in a CAN branch line or a communication stop in currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the Techstream to determine which ECU or sensor that is connected to the open branch line is not responding (the ECU or sensor has a background color of red).
  • ○: DTC is output.
  • -: DTC is not output.
  • *1: DTC U0073 may be stored when communication is lost.
  • *2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
  • If an open occurs in just one of the wires of a CAN branch line, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
  • If an open occurs in just one of the wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.

-

Trouble Mode

Open in CAN main line(s)

CAN bus lines short circuit or short to GND

Output ECU

Output DTC

ECM Communication Stop Mode

CANH-CANL

CANH-GND

CANL-GND

Bus 1

Forward Recognition Camera

U0100

-

U0101

-

U0123

-

-

U0126

-

-

U0129

-

-

U0142

-

-

U0155

-

-

Millimeter Wave Radar Sensor Assembly

U0100

-

U0125

-

-

U0126

-

-

U0129

-

-

U0137

-

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

U0125

-

-

U0126

-

-

U0129

-

-

U0142

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

Bus 2

ECM

U0100

-

U0122

-

U0137

-

U0155

-

U1104

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

U0129

-

-

U0140

-

-

U0155

-

-

U0164

-

-

Navigation Receiver Assembly*1

U0100

-

U0129

-

-

U0140

-

-

U0155

-

-

U0164

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

U0122

-

-

U0416

-

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

U0114

-

-

U0123

-

-

U0126

-

-

Brake Control with Bracket Relay*1

U0123

-

-

U0129

-

-

U0155

-

-

Tire Pressure Warning ECU and Receiver

U0129

-

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

-

Airbag Sensor Assembly

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

U0101

-

U0151

-

-

U0155

-

-

U0199

-

-

U0200

-

-

U0208

-

-

U023A

-

-

U1002

-

-

U1115

-

-

Air Conditioning Amplifier Assembly

B1499

-

Combination Meter Assembly

U0100

-

U0129

-

-

U0142

-

-

U0151

-

-

U0163

-

-

U0235

-

-

U023A

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

U0101

-

U0151

-

-

U0155

-

-

U0199

-

-

U0200

-

-

U0208

-

-

U023A

-

-

U1002

-

-

U1115

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

Multiplex Tilt and Telescopic ECU

U0142

-

-

U0208

-

-

B2621

-

-

B2624

-

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

-

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 3, PAST COMMUNICATION ERROR)

(a) If DTCs indicating a past communication error of an ECU or sensor connected to Bus 3 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

HINT:

  • Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
  • If there is an open in a CAN branch line or a communication stop in currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the Techstream to determine which ECU or sensor that is connected to the open branch line is not responding (the ECU or sensor has a background color of red).
  • ○: DTC is output.
  • -: DTC is not output.
  • *1: DTC U0073 may be stored when communication is lost.
  • *2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
  • If an open occurs in just one of the wires of a CAN branch line, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
  • If an open occurs in just one of the wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.

-

Trouble Mode

Open in CAN branch line(s)

Open in CAN main line(s)

Output ECU

Output DTC

Navigation ECU Communication Stop Mode

Audio Receiver Assembly Communication Stop Mode

Central Gateway ECU (Network Gateway ECU)

(CA3H and CA3L Terminals)

Central Gateway ECU (Network Gateway ECU)

(CAYH and CAYL Terminals)

Bus 1

Forward Recognition Camera

U0100

-

-

-

-

U0101

-

-

-

-

U0123

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

U0155

-

-

-

-

Millimeter Wave Radar Sensor Assembly

U0100

-

-

-

-

U0125

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0137

-

-

-

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

-

-

-

U0125

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 2

ECM

U0100

-

-

-

-

U0122

-

-

-

-

U0137

-

-

-

-

U0155

-

-

-

-

U1104

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

-

U0129

-

-

U0140

-

-

U0155

-

-

U0164

-

-

Navigation Receiver Assembly*1

U0100

-

-

U0129

-

-

U0140

-

-

U0155

-

-

U0164

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

-

-

-

U0122

-

-

-

-

U0416

-

-

-

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

-

-

-

U0114

-

-

-

-

U0123

-

-

-

-

U0126

-

-

-

-

Brake Control with Bracket Relay*1

U0123

-

-

-

-

U0129

-

-

-

-

U0155

-

-

-

-

Tire Pressure Warning ECU and Receiver

U0129

-

-

-

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

-

-

-

Airbag Sensor Assembly

-

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

-

U0101

-

-

-

-

U0151

-

-

-

-

U0155

-

-

-

-

U0199

-

-

-

-

U0200

-

-

-

-

U0208

-

-

-

-

U023A

-

-

-

-

U1002

-

-

-

-

U1115

-

-

-

-

Air Conditioning Amplifier Assembly

B1499

-

-

-

-

Combination Meter Assembly

U0100

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

U0151

-

-

-

-

U0163

-

-

U0235

-

-

-

-

U023A

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

-

U0101

-

-

-

-

U0151

-

-

-

-

U0155

-

-

-

-

U0199

-

-

-

-

U0200

-

-

-

-

U0208

-

-

-

-

U023A

-

-

-

-

U1002

-

-

-

-

U1115

-

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

-

Multiplex Tilt and Telescopic ECU

U0142

-

-

-

-

U0208

-

-

-

-

B2621

-

-

-

-

B2624

-

-

-

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

-

-

-

-

Trouble Mode

CAN bus lines short circuit or short to GND

Output ECU

Output DTC

CANH-CANL

CANH-GND

CANL-GND

Bus 1

Forward Recognition Camera

U0100

-

U0101

-

U0123

-

U0126

-

U0129

-

U0142

-

U0155

-

Millimeter Wave Radar Sensor Assembly

U0100

-

U0125

-

U0126

-

U0129

-

U0137

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

U0125

-

U0126

-

U0129

-

U0142

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 2

ECM

U0100

-

U0122

-

U0137

-

U0155

-

U1104

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

U0129

-

U0140

-

U0155

-

U0164

-

Navigation Receiver Assembly*1

U0100

-

U0129

-

U0140

-

U0155

-

U0164

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

U0122

-

U0416

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

U0114

-

U0123

-

U0126

-

Brake Control with Bracket Relay*1

U0123

-

U0129

-

U0155

-

Tire Pressure Warning ECU and Receiver

U0129

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

Airbag Sensor Assembly

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

U0101

-

U0151

-

U0155

-

U0199

-

U0200

-

U0208

-

U023A

-

U1002

-

U1115

-

Air Conditioning Amplifier Assembly

B1499

-

Combination Meter Assembly

U0100

-

U0129

-

U0142

-

U0151

-

U0163

-

U0235

-

U023A

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

U0101

-

U0151

-

U0155

-

U0199

-

U0200

-

U0208

-

U023A

-

U1002

-

U1115

-

Outer Mirror Control ECU Assembly LH

U0142

-

Outer Mirror Control ECU Assembly RH

U0142

-

Multiplex Tilt and Telescopic ECU

U0142

-

U0208

-

B2621

-

B2624

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 4, PAST COMMUNICATION ERROR)

(a) If DTCs indicating a past communication error of an ECU or sensor connected to Bus 4 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

HINT:

  • Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
  • If there is an open in a CAN branch line or a communication stop in currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the Techstream to determine which ECU or sensor that is connected to the open branch line is not responding (the ECU or sensor has a background color of red).
  • ○: DTC is output.
  • -: DTC is not output.
  • *1: DTC U0073 may be stored when communication is lost.
  • *2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
  • If an open occurs in just one of the wires of a CAN branch line, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
  • If an open occurs in just one of the wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.

-

Trouble Mode

Open in CAN branch line(s)

Output ECU

Output DTC

4WD Control ECU Communication Stop Mode

Skid Control ECU Communication Stop Mode

Trailer Brake Controller Communication Stop Mode

Bus 1

Forward Recognition Camera

U0100

-

-

-

U0101

-

-

-

U0123

-

-

-

U0126

-

-

-

U0129

-

-

U0142

-

-

-

U0155

-

-

-

Millimeter Wave Radar Sensor Assembly

U0100

-

-

-

U0125

-

-

-

U0126

-

-

-

U0129

-

-

U0137

-

-

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

-

-

U0125

-

-

-

U0126

-

-

-

U0129

-

-

U0142

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 2

ECM

U0100

-

-

-

U0122

-

-

U0137

-

-

-

U0155

-

-

-

U1104

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

-

-

U0129

-

-

U0140

-

-

-

U0155

-

-

-

U0164

-

-

-

Navigation Receiver Assembly*1

U0100

-

-

-

U0129

-

-

U0140

-

-

-

U0155

-

-

-

U0164

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

-

U0122

-

-

U0416

-

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

-

U0114

-

U0123

-

-

U0126

-

-

Brake Control with Bracket Relay*1

U0123

-

-

U0129

-

U0155

-

-

Tire Pressure Warning ECU and Receiver

U0129

-

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

-

-

Airbag Sensor Assembly

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0199

-

-

-

U0200

-

-

-

U0208

-

-

-

U023A

-

-

-

U1002

-

-

-

U1115

-

-

-

Air Conditioning Amplifier Assembly

B1499

-

-

-

Combination Meter Assembly

U0100

-

-

-

U0129

-

-

U0142

-

-

-

U0151

-

-

-

U0163

-

-

-

U0235

-

-

-

U023A

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0199

-

-

-

U0200

-

-

-

U0208

-

-

-

U023A

-

-

-

U1002

-

-

-

U1115

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

Multiplex Tilt and Telescopic ECU

U0142

-

-

-

U0208

-

-

-

B2621

-

-

-

B2624

-

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

-

-

-

Trouble Mode

Open in CAN branch line(s)

Open in CAN main line(s)

Output ECU

Output DTC

Tire Pressure Monitor ECU Communication Stop Mode

Steering Angle Sensor Communication Stop Mode

Central Gateway ECU (Network Gateway ECU)

(CA2H and CA2L Terminals)

Bus 1

Forward Recognition Camera

U0100

-

-

-

U0101

-

-

-

U0123

-

-

-

U0126

-

-

U0129

-

-

-

U0142

-

-

-

U0155

-

-

-

Millimeter Wave Radar Sensor Assembly

U0100

-

-

-

U0125

-

-

-

U0126

-

-

U0129

-

-

-

U0137

-

-

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

-

-

U0125

-

-

-

U0126

-

-

U0129

-

-

-

U0142

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 2

ECM

U0100

-

-

-

U0122

-

-

-

U0137

-

-

-

U0155

-

-

-

U1104

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

-

-

U0129

-

-

-

U0140

-

-

-

U0155

-

-

-

U0164

-

-

-

Navigation Receiver Assembly*1

U0100

-

-

-

U0129

-

-

-

U0140

-

-

-

U0155

-

-

-

U0164

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

-

-

U0122

-

-

-

U0416

-

-

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

-

-

U0114

-

-

-

U0123

-

-

-

U0126

-

-

Brake Control with Bracket Relay*1

U0123

-

-

-

U0129

-

-

-

U0155

-

-

-

Tire Pressure Warning ECU and Receiver

U0129

-

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

-

-

Airbag Sensor Assembly

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0199

-

-

-

U0200

-

-

-

U0208

-

-

-

U023A

-

-

-

U1002

-

-

-

U1115

-

-

-

Air Conditioning Amplifier Assembly

B1499

-

-

-

Combination Meter Assembly

U0100

-

-

-

U0129

-

-

-

U0142

-

-

-

U0151

-

-

-

U0163

-

-

-

U0235

-

-

-

U023A

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0199

-

-

-

U0200

-

-

-

U0208

-

-

-

U023A

-

-

-

U1002

-

-

-

U1115

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

Multiplex Tilt and Telescopic ECU

U0142

-

-

-

U0208

-

-

-

B2621

-

-

-

B2624

-

-

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

-

-

-

Trouble Mode

Open in CAN main line(s)

Output ECU

Output DTC

No. 3 CAN Junction Connector to No. 4 CAN Junction Connector

No. 4 CAN Junction Connector to No. 6 CAN Junction Connector

Center Airbag Sensor Communication Stop Mode

Bus 1

Forward Recognition Camera

U0100

-

-

-

U0101

-

-

-

U0123

-

-

-

U0126

-

-

-

U0129

-

-

-

U0142

-

-

-

U0155

-

-

-

Millimeter Wave Radar Sensor Assembly

U0100

-

-

-

U0125

-

-

-

U0126

-

-

-

U0129

-

-

-

U0137

-

-

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

-

-

U0125

-

-

-

U0126

-

-

-

U0129

-

-

-

U0142

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 2

ECM

U0100

-

-

-

U0122

-

-

-

U0137

-

-

-

U0155

-

-

-

U1104

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

-

-

U0129

-

-

-

U0140

-

-

-

U0155

-

-

-

U0164

-

-

-

Navigation Receiver Assembly*1

U0100

-

-

-

U0129

-

-

-

U0140

-

-

-

U0155

-

-

-

U0164

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

-

-

U0122

-

-

-

U0416

-

-

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

-

-

U0114

-

-

-

U0123

-

-

-

U0126

-

-

-

Brake Control with Bracket Relay*1

U0123

-

-

-

U0129

-

-

-

U0155

-

-

-

Tire Pressure Warning ECU and Receiver

U0129

-

-

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

-

-

Airbag Sensor Assembly

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0199

-

-

-

U0200

-

-

-

U0208

-

-

-

U023A

-

-

-

U1002

-

-

-

U1115

-

-

-

Air Conditioning Amplifier Assembly

B1499

-

-

-

Combination Meter Assembly

U0100

-

-

-

U0129

-

-

-

U0142

-

-

-

U0151

-

-

-

U0163

-

-

-

U0235

-

-

-

U023A

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0199

-

-

-

U0200

-

-

-

U0208

-

-

-

U023A

-

-

-

U1002

-

-

-

U1115

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

Multiplex Tilt and Telescopic ECU

U0142

-

-

-

U0208

-

-

-

B2621

-

-

-

B2624

-

-

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

-

-

-

Trouble Mode

CAN bus lines short circuit or short to GND

Output ECU

Output DTC

CANH-CANL

CANH-GND

CANL-GND

Bus 1

Forward Recognition Camera

U0100

-

U0101

-

U0123

-

U0126

-

U0129

-

U0142

-

U0155

-

Millimeter Wave Radar Sensor Assembly

U0100

-

U0125

-

U0126

-

U0129

-

U0137

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

U0125

-

U0126

-

U0129

-

U0142

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 2

ECM

U0100

-

U0122

-

U0137

-

U0155

-

U1104

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

U0129

-

U0140

-

U0155

-

U0164

-

Navigation Receiver Assembly*1

U0100

-

U0129

-

U0140

-

U0155

-

U0164

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

U0122

-

U0416

-

Brake Actuator Assembly (skid control ECU)*1

U0100

 

U0114

-

U0123

-

U0126

-

Brake Control with Bracket Relay*1

U0123

-

U0129

-

U0155

-

Tire Pressure Warning ECU and Receiver

U0129

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

Airbag Sensor Assembly

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

U0101

-

U0151

-

U0155

-

U0199

-

U0200

-

U0208

-

U023A

-

U1002

-

U1115

-

Air Conditioning Amplifier Assembly

B1499

-

Combination Meter Assembly

U0100

-

U0129

-

U0142

-

U0151

-

U0163

-

U0235

-

U023A

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

U0101

-

U0151

-

U0155

-

U0199

-

U0200

-

U0208

-

U023A

-

U1002

-

U1115

-

Outer Mirror Control ECU Assembly LH

U0142

-

Outer Mirror Control ECU Assembly RH

U0142

-

Multiplex Tilt and Telescopic ECU

U0142

-

U0208

-

B2621

-

B2624

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

DTC COMBINATION TABLE (OPEN OR SHORT IN BUS 5, PAST COMMUNICATION ERROR)

(a) If DTCs indicating a past communication error of an ECU or sensor connected to Bus 5 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

HINT:

  • Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
  • If there is an open in a CAN branch line or a communication stop in currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the Techstream to determine which ECU or sensor that is connected to the open branch line is not responding (the ECU or sensor has a background color of red).
  • ○: DTC is output.
  • -: DTC is not output.
  • *1: DTC U0073 may be stored when communication is lost.
  • *2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
  • If an open occurs in just one of the wires of a CAN branch line, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
  • If an open occurs in just one of the wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.

-

Trouble Mode

Open in CAN branch line(s)

Open in CAN main line(s)

Output ECU

Output DTC

Main Body ECU Communication Stop Mode

Air Conditioning Amplifier Communication Stop Mode

Central Gateway ECU (Network Gateway ECU)

(CA5H and CA5L Terminals)

Combination Meter ECU Communication Stop Mode

Bus 1

Forward Recognition Camera

U0100

-

-

-

-

U0101

-

-

-

-

U0123

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

U0155

-

-

-

-

Millimeter Wave Radar Sensor Assembly

U0100

-

-

-

-

U0125

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0137

-

-

-

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

-

-

-

U0125

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 2

ECM

U0100

-

-

-

-

U0122

-

-

-

-

U0137

-

-

-

-

U0155

-

-

-

-

U1104

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

-

-

-

U0129

-

-

-

-

U0140

-

-

-

U0155

-

-

-

-

U0164

-

-

-

Navigation Receiver Assembly*1

U0100

-

-

-

-

U0129

-

-

-

-

U0140

-

-

-

U0155

-

-

-

-

U0164

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

-

-

-

U0122

-

-

-

-

U0416

-

-

-

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

-

-

-

U0114

-

-

-

-

U0123

-

-

-

-

U0126

-

-

-

-

Brake Control with Bracket Relay*1

U0123

-

-

-

-

U0129

-

-

-

-

U0155

-

-

-

-

Tire Pressure Warning ECU and Receiver

U0129

-

-

-

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

-

-

-

Airbag Sensor Assembly

-

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0199

-

-

-

-

U0200

-

-

-

-

U0208

-

-

-

-

U023A

-

-

-

U1002

-

-

-

-

U1115

-

-

-

-

Air Conditioning Amplifier Assembly

B1499

-

-

-

Combination Meter Assembly

U0100

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

U0151

-

-

-

-

U0163

-

-

-

-

U0235

-

-

-

-

U023A

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

U0101

-

-

-

U0151

-

-

-

U0155

-

-

-

U0199

-

-

-

-

U0200

-

-

-

-

U0208

-

-

-

-

U023A

-

-

-

U1002

-

-

-

-

U1115

-

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

-

Multiplex Tilt and Telescopic ECU

U0142

-

-

-

-

U0208

-

-

-

-

B2621

-

-

-

-

B2624

-

-

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

-

-

-

-

Trouble Mode

CAN bus lines short circuit or short to GND

Output ECU

Output DTC

CANH-CANL

CANH-GND

CANL-GND

Bus 1

Forward Recognition Camera

U0100

-

U0101

-

U0123

-

U0126

-

U0129

-

U0142

-

U0155

-

Millimeter Wave Radar Sensor Assembly

U0100

-

U0125

-

U0126

-

U0129

-

U0137

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

U0125

-

U0126

-

U0129

-

U0142

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 2

ECM

U0100

-

U0122

-

U0137

-

U0155

-

U1104

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

U0129

-

U0140

-

U0155

-

U0164

-

Navigation Receiver Assembly*1

U0100

-

U0129

-

U0140

-

U0155

-

U0164

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

U0122

-

U0416

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

U0114

-

U0123

-

U0126

-

Brake Control with Bracket Relay*1

U0123

-

U0129

-

U0155

-

Tire Pressure Warning ECU and Receiver

U0129

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

Airbag Sensor Assembly

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

U0101

-

U0151

-

U0155

-

U0199

-

U0200

-

U0208

-

U023A

-

U1002

-

U1115

-

Air Conditioning Amplifier Assembly

B1499

-

Combination Meter Assembly

U0100

-

U0129

-

U0142

-

U0151

-

U0163

-

U0235

-

U023A

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

U0101

-

U0151

-

U0155

-

U0199

-

U0200

-

U0208

-

U023A

-

U1002

-

U1115

-

Outer Mirror Control ECU Assembly LH

U0142

-

Outer Mirror Control ECU Assembly RH

U0142

-

Multiplex Tilt and Telescopic ECU

U0142

-

U0208

-

B2621

-

B2624

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

DTC COMBINATION TABLE (OPEN OR SHORT IN SUB BUS 1, PAST COMMUNICATION ERROR)

(a) If DTCs indicating a past communication error of an ECU or sensor connected to Bus 5 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

HINT:

  • Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
  • If there is an open in a CAN branch line or a communication stop in currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the Techstream to determine which ECU or sensor that is connected to the open branch line is not responding (the ECU or sensor has a background color of red).
  • ○: DTC is output.
  • -: DTC is not output.
  • *1: DTC U0073 may be stored when communication is lost.
  • *2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
  • If an open occurs in just one of the wires of a CAN branch line, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
  • If an open occurs in just one of the wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.

-

Trouble Mode

Open in CAN branch line(s)

Output ECU

Output DTC

Outer Mirror Control ECU Assembly LH

Outer Mirror Control ECU Assembly RH

Multiplex Tilt and Telescopic ECU

Front Power Seat Switch LH (Power Seat Control ECU)

Bus 1

Forward Recognition Camera

U0100

-

-

-

-

U0101

-

-

-

-

U0123

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

U0155

-

-

-

-

Millimeter Wave Radar Sensor Assembly

U0100

-

-

-

-

U0125

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0137

-

-

-

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

-

-

-

U0125

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 2

ECM

U0100

-

-

-

-

U0122

-

-

-

-

U0137

-

-

-

-

U0155

-

-

-

-

U1104

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

-

-

-

U0129

-

-

-

-

U0140

-

-

-

-

U0155

-

-

-

-

U0164

-

-

-

-

Navigation Receiver Assembly*1

U0100

-

-

-

-

U0129

-

-

-

-

U0140

-

-

-

-

U0155

-

-

-

-

U0164

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

-

-

-

U0122

-

-

-

-

U0416

-

-

-

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

-

-

-

U0114

-

-

-

-

U0123

-

-

-

-

U0126

-

-

-

-

Brake Control with Bracket Relay*1

U0123

-

-

-

-

U0129

-

-

-

-

U0155

-

-

-

-

Tire Pressure Warning ECU and Receiver

U0129

-

-

-

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

-

-

-

Airbag Sensor Assembly

-

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

-

U0101

-

-

-

-

U0151

-

-

-

-

U0155

-

-

-

-

U0199

-

-

-

U0200

-

-

-

U0208

-

-

-

U023A

-

-

-

-

U1002

-

-

-

-

U1115

-

-

-

Air Conditioning Amplifier Assembly

B1499

-

-

-

-

Combination Meter Assembly

U0100

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

U0151

-

-

-

-

U0163

-

-

-

-

U0235

-

-

-

-

U023A

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

-

U0101

-

-

-

-

U0151

-

-

-

-

U0155

-

-

-

-

U0199

-

-

-

U0200

-

-

-

U0208

-

-

-

U023A

-

-

-

-

U1002

-

-

-

-

U1115

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

Multiplex Tilt and Telescopic ECU

U0142

-

-

 

U0208

-

-

B2621

-

-

B2624

-

-

 

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

-

-

-

-

Trouble Mode

Open in CAN main line(s)

Output ECU

Output DTC

Main Body ECU (Multiplex Network Body ECU)

No. 3 CAN Junction Connector to No. 4 CAN Junction Connector

No. 4 CAN Junction Connector to No. 8 CAN Junction Connector

No. 8 CAN Junction Connector to No. 2 CAN Junction Terminal

Bus 1

Forward Recognition Camera

U0100

-

-

-

-

U0101

-

-

-

-

U0123

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

U0155

-

-

-

-

Millimeter Wave Radar Sensor Assembly

U0100

-

-

-

-

U0125

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0137

-

-

-

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

-

-

-

U0125

-

-

-

-

U0126

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 2

ECM

U0100

-

-

-

-

U0122

-

-

-

-

U0137

-

-

-

-

U0155

-

-

-

-

U1104

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

-

-

-

U0129

-

-

-

-

U0140

-

-

-

-

U0155

-

-

-

-

U0164

-

-

-

-

Navigation Receiver Assembly*1

U0100

-

-

-

-

U0129

-

-

-

-

U0140

-

-

-

-

U0155

-

-

-

-

U0164

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

-

-

-

U0122

-

-

-

-

U0416

-

-

-

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

-

-

-

U0114

-

-

-

-

U0123

-

-

-

-

U0126

-

-

-

-

Brake Control with Bracket Relay*1

U0123

-

-

-

-

U0129

-

-

-

-

U0155

-

-

-

-

Tire Pressure Warning ECU and Receiver

U0129

-

-

-

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

-

-

-

Airbag Sensor Assembly

-

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

-

U0101

-

-

-

-

U0151

-

-

-

-

U0155

-

-

-

-

U0199

-

-

-

-

U0200

-

-

-

-

U0208

-

-

-

-

U023A

-

-

-

-

U1002

-

-

-

-

U1115

-

-

-

-

Air Conditioning Amplifier Assembly

B1499

-

-

-

-

Combination Meter Assembly

U0100

-

-

-

-

U0129

-

-

-

-

U0142

-

-

-

-

U0151

-

-

-

-

U0163

-

-

-

-

U0235

-

-

-

-

U023A

-

-

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

-

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

-

-

-

U0101

-

-

-

-

U0151

-

-

-

-

U0155

-

-

-

-

U0199

-

-

-

-

U0200

-

-

-

-

U0208

-

-

-

-

U023A

-

-

-

-

U1002

-

-

-

-

U1115

-

-

-

-

Outer Mirror Control ECU Assembly LH

U0142

-

-

-

-

Outer Mirror Control ECU Assembly RH

U0142

-

-

-

-

Multiplex Tilt and Telescopic ECU

U0142

-

-

-

-

U0208

-

-

-

-

B2621

-

-

-

-

B2624

-

-

-

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

-

-

-

-

Trouble Mode

CAN bus lines short circuit or short to GND

Output ECU

Output DTC

CANH-CANL

CANH-GND

CANL-GND

Bus 1

Forward Recognition Camera

U0100

-

U0101

-

U0123

-

U0126

-

U0129

-

U0142

-

U0155

-

Millimeter Wave Radar Sensor Assembly

U0100

-

U0125

-

U0126

-

U0129

-

U0137

-

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System)

U0100

-

U0125

-

U0126

-

U0129

-

U0142

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 2

ECM

U0100

-

U0122

-

U0137

-

U0155

-

U1104

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 3

Radio and Display Receiver Assembly*1

U0100

-

U0129

-

U0140

-

U0155

-

U0164

-

Navigation Receiver Assembly*1

U0100

-

U0129

-

U0140

-

U0155

-

U0164

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 4

4 Wheel Drive Control ECU (4WD Control ECU)

U0100

-

U0122

-

U0416

-

Brake Actuator Assembly (skid control ECU)*1

U0100

-

U0114

-

U0123

-

U0126

-

Brake Control with Bracket Relay*1

U0123

-

U0129

-

U0155

-

Tire Pressure Warning ECU and Receiver

U0129

-

spiral with sensor cable sub-assembly (steering angle sensor)

-

-

Airbag Sensor Assembly

-

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Bus 5

Main Body ECU (Multiplex Network Body ECU)

U0100

-

U0101

-

U0151

-

U0155

-

U0199

-

U0200

-

U0208

-

U023A

-

U1002

-

U1115

-

Air Conditioning Amplifier Assembly

B1499

-

Combination Meter Assembly

U0100

-

U0129

-

U0142

-

U0151

-

U0163

-

U0235

-

U023A

-

Central Gateway ECU (Network Gateway ECU)*2

-

-

Sub Bus 1

Main Body ECU (Multiplex Network Body ECU)

U0100

-

U0101

-

U0151

-

U0155

-

U0199

-

U0200

-

U0208

-

U023A

-

U1002

-

U1115

-

Outer Mirror Control ECU Assembly LH

U0142

-

Outer Mirror Control ECU Assembly RH

U0142

-

Multiplex Tilt and Telescopic ECU

U0142

-

U0208

-

B2621

-

B2624

-

Front Power Seat Switch LH (Power Seat Control ECU)

-

-

    Dtc Check / Clear

    ECM Communication Stop Mode

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    Toyota Tundra Service Manual > Fuel System: On-vehicle Inspection
    ON-VEHICLE INSPECTION PROCEDURE 1. CHECK FUEL PUMP OPERATION AND FOR FUEL LEAK (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. NOTICE: Do not start the engine. (c) Turn the Techstream main switch on. (d) Enter the following menus: Powertrain / Engine and ECT / Active Test ...

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    Toyota Tundra Service Manual

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