Side Auto Step Switch Circuit

EXTERIOR PANELS / TRIM: AUTOMATIC RUNNING BOARD SYSTEM: Side Auto Step Switch Circuit
- Side Auto Step Switch Circuit

DESCRIPTION

The side auto step controller ECU assembly receives the door open/closed signal from each door courtesy light switch via the side auto step switch assembly.

WIRING DIAGRAM





INSPECTION PROCEDURE

HINT
Inspection should be performed on the door courtesy switch circuit on the side where the automatic running board is malfunctioning.

PROCEDURE

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

(a) Disconnect the F90 side auto step switch assembly connector.

(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 (Check for Open):

for LH





for RH





Standard Resistance (Check for Short):

for LH





for RH





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures