DESCRIPTION
When there is a short to GND in the side auto step motor circuit, the side auto step controller ECU assembly does not operate the automatic running board.
DTC No. |
Detection Condition |
Trouble Area |
---|---|---|
21 |
Short to GND in the circuit on the stowing or deploying side of the side auto step motor LH. |
|
23 |
Short to GND in the circuit on the stowing or deploying side of the side auto step motor RH. |
WIRING DIAGRAM
PROCEDURE
1. |
INSPECT SIDE AUTO STEP MOTOR ASSEMBLY |
(a) Disconnect the O25*1 or N23*2 side auto step motor assembly connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance: for LH
for RH
|
|
NG | ![]() |
REPLACE SIDE AUTO STEP MOTOR ASSEMBLY |
|
2. |
CHECK HARNESS AND CONNECTOR (SIDE AUTO STEP MOTOR - SIDE AUTO STEP CONTROLLER ECU) |
(a) Disconnect the A42 side auto step controller ECU assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A42-3 (STW1) - Body ground |
Always |
10 kΩ or higher |
A42-4 (DPL1) - Body ground |
Always |
10 kΩ or higher |
for RH
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A42-2 (STW2) - Body ground |
Always |
10 kΩ or higher |
A42-1 (DPL1) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE SIDE AUTO STEP CONTROLLER ECU ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" ...
Speedometer Malfunction
DESCRIPTION
The combination meter receives vehicle speed signals from the skid control ECU
via the CAN communication line. The wheel speed sensors output voltages that vary
according to the vehicle speed. The skid control ECU supplies power to the wheel
...