Door Courtesy Switch Circuit
EXTERIOR PANELS / TRIM: AUTOMATIC RUNNING BOARD SYSTEM: Door Courtesy Switch Circuit
- Door Courtesy 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. READ VALUE USING TECHSTREAM (DOOR COURTESY LIGHT SWITCH)
(a) Using the Techstream, read the Data List Interior Lighting System.
Main Body
OK:
Normal conditions listed above are displayed.
NG -- LIGHTING SYSTEM Door Courtesy Switch Circuit
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (DOOR COURTESY LIGHT SWITCH - DIODE)
(a) for LH
(1) Disconnect the O5 and O6 door courtesy light switch connectors.
(2) Disconnect the O26 diode connector.
(b) for RH
(1) Disconnect the N5 and N7 door courtesy light switch connectors.
(2) Disconnect the N24 diode 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 -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (DIODE - SIDE AUTO STEP SWITCH)
(a) Disconnect the F90 side auto step switch assembly connector.
(b) 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 -- Continue to next step.
4. REPLACE DIODE
(a) Replace the diode on the malfunctioning side with a new or correctly functioning diode.
NEXT -- Continue to next step.
5. CHECK AUTOMATIC RUNNING BOARD OPERATION
(a) Check that the automatic running board functions normally Operation Check.
OK:
Malfunction disappears.
NG -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures
OK -- END