Toyota Tundra Service Manual: Transfer Shift Motor Control Circuit High (P17AA)

Toyota Tundra Service Manual / Engine, Hybrid System / Wf1am Transfer / Touch Select 2-4 And High-low System / Transfer Shift Motor Control Circuit High (P17AA)

DESCRIPTION

This DTC is detected when a short to B+ is detected in the transfer shift motor drive circuit.

DTC Code

DTC Detection Condition

Diagnosis Condition
Malfunction Status
Malfunction Time
Other

Trouble Area

P17AA

Ignition switch ON (when transfer shift motor is not operating)
Short to B+ in the transfer shift motor drive circuit
1 second or more
1 trip detection logic

Wire harness and connector
4 wheel drive control ECU
Transfer shift actuator assembly

WIRING DIAGRAM

Refer to DTCs P17A8 and P17A9 (See page ).

PROCEDURE

1.	CHECK TRANSFER SHIFT ACTUATOR ASSEMBLY (TRANSFER SHIFT MOTOR)

(a) Disconnect the 4 wheel drive control ECU connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
A26-1 (TM1) or A26-2 (TM2) - Body ground	Ignition switch ON	Below 1 V

Text in Illustration

*a	Front view of wire harness connector (to 4 Wheel Drive Control ECU)

REPLACE 4 WHEEL DRIVE CONTROL ECU

2.	CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU AND TRANSFER SHIFT ACTUATOR ASSEMBLY - BODY GROUND)

(a) Disconnect the A26 4 wheel drive control ECU connector.

(b) Disconnect the D67 transfer shift actuator assembly connector.

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
A26-1 (TM1) or D67-1 (TM1) - Body ground	Ignition switch ON	Below 1 V
A26-2 (TM2) or D67-2 (TM2) - Body ground	Ignition switch ON	Below 1 V

REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

Transfer Shift Motor Control Circuit Circuit Open (P17A8,P17A9)

Transfer Shift Motor Position Circuit (P17AB)

See More:

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