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
CAUTION / NOTICE / HINT
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
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F90-4 (ECU1) - A42-14 (CTY1) |
Always |
Below 1 Ω |
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F90-6 (ECU2) - A42-13 (CTY2) |
Always |
Below 1 Ω |
Standard Resistance (Check for Short):
for LH
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A42-14 (CTY1) - Body ground |
Always |
10 kΩ or higher |
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A42-13 (CTY2) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Operation Check
OPERATION CHECK
1. CHECK SEAT CUSHION CLIMATE CONTROL BLOWER
(a) Turn the engine switch on (IG).
(b) Set the refreshing seat switch blower side to level 3 (maximum).
(c) Check that the fan motor turns smoothly.
2. CHECK SEATBACK CLIMATE CONTROL BLOWER
(a ...
Manual Button Malfunction (B15C5)
DESCRIPTION
This DTC is stored when the DCM (Telematics Transceiver) detects an open or short
circuit in the manual (SOS) switch.
DTC Code
DTC Detection Condition
Trouble Area
B15C5
An open or sh ...