Toyota Tundra Service Manual: Lost Communication with ECM / PCM "A" (U0100,U0125,U0126,U0129,U0142)

Toyota Tundra Service Manual / Audio, Visual, Telematics / Park Assist / Monitoring / Blind Spot Monitor System / Lost Communication with ECM / PCM "A" (U0100,U0125,U0126,U0129,U0142)

DESCRIPTION

These DTCs are stored if there is a malfunction in the CAN communication system connected to the blind spot monitor sensor.

HINT:

If CAN communication system DTCs are stored, they may also be stored for other systems.

DTC Code

DTC Detection Condition

Trouble Area

U0100

Lost communication with ECM

CAN communication system

U0125

Lost communication with airbag sensor assembly

U0126

Lost communication with spiral with sensor cable sub-assembly

U0129

Lost communication with skid control ECU (brake actuator assembly)

U0142

Lost communication with main body ECU (multiplex network body ECU)

CAUTION / NOTICE / HINT

NOTICE:

When checking for DTCs, make sure that the blind spot monitor system is turned on.

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs (See page ).

(b) Recheck for DTCs and check if the same DTC is output again (See page ).

Result

Result

Proceed to

DTC U0100, U0125, U0126, U0129 and U0142 are not output.

A

DTC U0100, U0125, U0126, U0129 and U0142 are not output.

B

HINT:

  • If CAN communication system DTCs are stored, they may also be stored for other systems.
  • If the CAN communication system has been inspected and repaired, the DTCs will not be output when rechecking for DTCs.
  • If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs (See page ).
A

GO TO CAN COMMUNICATION SYSTEM

B

USE SIMULATION METHOD TO CHECK

    Terminals Of Ecu

    Lost Communication with Blind Spot Monitor Slave Module (U0232)

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