Toyota Tundra Service Manual: How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

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

Toyota Tundra Service Manual > Touch Select 2-4 And High-low System: Transfer Shift Motor Control Circuit Circuit Open (P17A8,P17A9)
DESCRIPTION This DTC is detected when an open circuit or short to ground is detected in the transfer shift motor drive circuit. DTC Code DTC Detection Condition Diagnosis Condition Malfunction Status Malfunction Time Other Trouble Area P17A8 Ignition switch ON (when transfer shift motor is not opera ...

Toyota Tundra Owners Manual