Toyota Tundra Service Manual: Transfer Shift Motor Position Circuit (P17AB)

DESCRIPTION

This DTC is detected when a short to ground is detected in the limit switch circuit, which detects the position of the transfer shift motor.

DTC Code

DTC Detection Condition

Trouble Area

P17AB

Immediately after turning the ignition switch to ON and driving mode is being switched
Short to ground in either the TL1, TL2, TL3, TL4 or GTL terminal circuit
0.02 seconds or more
1 trip detection logic

WIRING DIAGRAM

PROCEDURE

1.	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 D68 transfer shift actuator assembly connector.

Standard Resistance:

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	INSPECT TRANSFER SHIFT ACTUATOR ASSEMBLY (LIMIT SWITCH)

(a) Disconnect the D68 transfer shift actuator assembly connector.

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

Standard Resistance:

Text in Illustration

*a	Component without harness connected (Transfer Shift Actuator Assembly)

REPLACE 4 WHEEL DRIVE CONTROL ECU

REPLACE TRANSFER SHIFT ACTUATOR ASSEMBLY

Toyota Tundra Service Manual > Occupant Classification System: Front Occupant Classification Sensor RH Collision Detection (B1786)
DESCRIPTION DTC B1786 is set when the occupant classification ECU receives a collision detection signal, which is sent by the front occupant detection sensor RH when an accident occurs. DTC B1786 is also set when the front seat frame with adjuster RH is subjected to a strong impact, even if an actua ...

Toyota Tundra Owners Manual