Short to GND in Motor LH Circuit (21,23)
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. |
PROCEDURE
INSPECT SIDE AUTO STEP MOTOR ASSEMBLY
(a) Disconnect the O25*1 or N23*2 side auto step motor assembly connector.
- *1: for LH
- *2: for RH
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance: for LH
for RH
|
 |
| NG | .gif) | REPLACE SIDE AUTO STEP MOTOR ASSEMBLY |
|
.gif)
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 |
Test yourself
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