Toyota 4Runner: Motor LH Current Senser (62,63)

Toyota 4Runner Service Manual / Vehicle Exterior / Exterior Panels / Trim / Automatic Running Board System / Motor LH Current Senser (62,63)

DESCRIPTION

When the side auto step motor current detection sensor inside the side auto step controller ECU assembly detects a current of less than 1 A when the automatic running board is operating, the side auto step controller ECU assembly does not operate the automatic running board.

DTC No.	Detection Condition	Trouble Area
61	When the side auto step motor assembly LH is operating, there is less than 1 A of current detected in the side auto step ECU even when the hall effect pluses are input.	Wire harness or connector Side auto step controller ECU assembly
62	When the side auto step motor assembly RH is operating, there is less than 1 A of current detected in the side auto step ECU even when the hall effect pluses are input.

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 1 Ω
O25-5 (DPL1) - A42-4 (DPL1)	Always	Below 1 Ω

for RH

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

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	PERFORM COOL DOWN

(a) Do not operate the automatic running board in order to cool down the side auto step motor assembly.

CHECK DTC

(a) Recheck for DTCs and check if the same DTC is output again.

OK:

No DTCs are output.

END

REPLACE SIDE AUTO STEP CONTROLLER ECU ASSEMBLY

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