Toyota 4Runner: Open in Motor LH Circuit (22,24)

Toyota 4Runner Service Manual / Vehicle Exterior / Exterior Panels / Trim / Automatic Running Board System / Open in Motor LH Circuit (22,24)

DESCRIPTION

When there is an open in the side auto step motor circuit, the side auto step controller ECU assembly does not operate the automatic running board.

DTC No.	Detection Condition	Trouble Area
22	Open in the stowing or deploying side of the side auto step motor LH circuit.	Side auto step motor assembly Wire harness or connector
24	Open in the stowing or deploying side of the side auto step motor RH circuit.	Side auto step motor assembly Wire harness or connector

NOTICE:

This DTC is stored when the door is opened or closed, or the Active Test "Power Running Board Forced Retracting" is performed while the connector is disconnected from the side auto step motor assembly.

WIRING DIAGRAM

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (SIDE AUTO STEP MOTOR - SIDE AUTO STEP CONTROLLER ECU)

(a) Disconnect the O25*1 or N23*2 side auto step motor assembly connector.

*1: for LH
*2: for RH

(b) Disconnect the A42 side auto step controller ECU assembly connector.

Standard Resistance:

for LH

Tester Connection	Condition	Specified Condition
O25-4 (STW1) - A42-3 (STW1)	Always	Below 5 Ω
O25-5 (DPL1) - A42-4 (DPL1)	Always	Below 5 Ω

for RH

Tester Connection	Condition	Specified Condition
N23-4 (STW2) - A42-2 (STW2)	Always	Below 5 Ω
N23-5 (DPL2) - A42-1 (DPL1)	Always	Below 5 Ω

REPLACE SIDE AUTO STEP MOTOR ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

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