Toyota Tundra Service Manual: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use these procedures to troubleshoot the theft deterrent system.
  • *: Use the Techstream.
  • Troubleshooting of the theft deterrent system is based on the premise that the door lock control system, the wireless door lock control system, the lighting system, the horn system, and the engine immobiliser system are operating normally. Check these systems first before troubleshooting the theft deterrent system.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

(a) Interview the customer to confirm the trouble.

Click here

NEXT

3.

READ AND SAVE OPERATION HISTORY

NOTICE:

  • If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read out and saved, the operation history information could be lost.
  • The function "Read operation history" uses the current system time setting inside the Techstream and the time counter inside the controlling ECU to calculate the timings shown in the operation history. For this reason, before reading out the operation history, first make sure that the Techstream system clock is accurately set to the current time.

(a) Read and save operation history using the Techstream.

Click here

NEXT

4.

INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

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

NEXT

5.

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

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

Click here

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B

B

GO TO CAN COMMUNICATION SYSTEM

A

6.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here

Result

Proceed to

Fault is not listed in Problem Symptoms Table (Fault can be simulated)

A

Fault is not listed in Problem Symptoms Table (Fault cannot be simulated)

B

Fault is listed in problem symptoms table

C

B

CHECK FOR INTERMITTENT PROBLEMS

C

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE

A

7.

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) DATA LIST / ACTIVE TEST

Click here

(b) Terminals of ECU

Click here

NEXT

8.

REPAIR OR REPLACE

NEXT

9.

CONFIRMATION TEST

NEXT

END

    Horn Circuit

    Improper Operation

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