Toyota Tundra Service Manual: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure listed to troubleshoot the touch select 2-4 and high-low system.
  • *: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP

NEXT

2.

CUSTOMER PROBLEM ANALYSIS

NEXT

3.

INSPECT BATTERY VOLTAGE

Standard Voltage:

11 to 14 V

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

NEXT

4.

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

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

Click here

HINT:

The ECU of this system is connected to the CAN communication system.

Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system.

Result

Proceed to

CAN DTCs are not output

A

CAN DTCs are output

B

B

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

A

5.

CHECK DTC*

(a) Check for DTCs.

Click here

(1) Record the DTCs.

(b) Clear the DTCs.

Click here

(c) Recheck for DTCs.

Click here

(1) Simulate the malfunction condition and check if the DTCs are output again.

Result

Proceed to

DTCs are not output

A

DTCs are output

B

B

GO TO STEP 10

A

6.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Result

Proceed to

Fault not listed in problem symptoms table

A

Fault listed in problem symptoms table

B

B

GO TO STEP 8

A

7.

OVERALL ANALYSIS AND TROUBLESHOOTING

(a) Terminals of ECU.

Click here

NEXT

8.

REPAIR OR REPLACE

NEXT

9.

CONFIRM TEST

NEXT

END

10.

GO TO DTC CHART

NEXT

GO TO STEP 8

    Fail-safe Chart

    Automatic Disconnecting Differential Motor Control Circuit Open (P17A0,P17A1)

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