Toyota 4Runner manuals

Toyota 4Runner: 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.

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

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

2.

PERFORM COOL DOWN

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


NEXT

3.

CHECK DTC

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

OK:

No DTCs are output.


OK

END


NG

REPLACE SIDE AUTO STEP CONTROLLER ECU ASSEMBLY

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