Toyota Tundra Service Manual: How To Proceed With Troubleshooting

Toyota Tundra Service Manual / Power Source, Network / Multiplex Communication / Lin Communication System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use these procedures to troubleshoot the LIN communication system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	INSPECT BATTERY VOLTAGE

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

3.	CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, inspect the CAN communication function to ensure there are no malfunctions in the CAN communication system.

Click here

Result	Proceed to
No DTCs output	A
DTCs output	B

GO TO CAN COMMUNICATION SYSTEM

4.	CHECK FOR DTC*

(a) Check for DTCs.

Click here

(b) Clear the DTCs.

Click here

Result	Proceed to
DTC output does not reoccur	A
DTC output reoccurs	B

GO TO DIAGNOSTIC TROUBLE CODE CHART

5.	PROBLEM SYMPTOMS TABLE

(a) Refer to the problem symptoms table.

Click here

Result	Proceed to
Fault is not listed in problem symptoms table	A
Fault is listed in problem symptoms table	B

GO TO STEP 6

6.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU

Click here

(b) Data List / Active Test

Click here

7.	REPAIR OR REPLACE

END

Dtc Check / Clear

Integration Control and Panel Assembly Communication Error

See More:

Toyota Tundra Service Manual > Occupant Classification System: Terminals Of Ecu
TERMINALS OF ECU 1. CHECK OCCUPANT CLASSIFICATION ECU Terminal No. (Symbols) Wiring Color Terminal Description Condition Specification Y2-1 (+B) - Y2-3 (GND) W - W-B Battery Ignition switch ON 11 to 14 V Y2-2 (DIA) - Y2-3 (GND) GR - W-B Diagnosis (DLC3) Ignition switch ON Pulse generation Y2-3 (GND) ...

Toyota Tundra Service Manual: How To Proceed With Troubleshooting

Dtc Check / Clear

Integration Control and Panel Assembly Communication Error

See More:

Toyota Tundra Owners Manual

Toyota Tundra Service Manual