Toyota Tundra Service Manual: How To Proceed With Troubleshooting

Toyota Tundra Service Manual / Vehicle Interior / Lighting / Lighting System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the lighting system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

VEHICLE BROUGHT TO WORKSHOP

NEXT

3.

INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard voltage:

11 to 14 V

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

NEXT

4.

CHECK CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Click here

OK:

CAN communication system DTCs are not output.

NG

GO TO CAN COMMUNICATION SYSTEM

OK

5.

CHECK FOR DTC*

(a) Check for DTCs and note any codes that are output.

Click here

(b) Clear the DTCs.

Click here

(c) Recheck for DTCs by simulating the operation indicated by the DTCs.

Click here

OK:

DTCs are not output.

NG

GO TO DIAGNOSTIC TROUBLE CODE CHART

OK

6.

PROBLEM SYMPTOMS TABLE

(a) Refer to 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

B

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

A

7.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check

Click here

(b) Terminals of ECU

Click here

(c) Data List / Active Test

Click here

NEXT

8.

ADJUST, REPAIR OR REPLACE

NEXT

9.

CONFIRMATION TEST

NEXT

END

    Headlight Relay Circuit

    IG Signal Circuit

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