Short in Motor LH (11,12)
When there is a short in the side auto step motor circuit, the side auto step controller ECU assembly halts the operation of the automatic running board.
DTC No. | Detection Condition | Trouble Area |
|---|---|---|
11 |
More than 44 A of current is flowing through the side auto step motor LH. |
|
12 |
More than 44 A of current is flowing through the side auto step motor RH. |
PROCEDURE
CHECK HARNESS AND CONNECTOR (SIDE AUTO STEP MOTOR - SIDE AUTO STEP CONTROLLER ECU)
(a) Disconnect the O25*1 or N23*2 side auto step motor assembly connector.
- *1: for LH
- *2: for RH
(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:
for LH
Tester Connection | Condition | Specified Condition |
|---|---|---|
A42-3 (STW1) - A42-4 (DPL1) |
Always |
10 kΩ or higher |
for RH
Tester Connection | Condition | Specified Condition |
|---|---|---|
A42-2 (STW2) - A42-1 (DPL2) |
Always |
10 kΩ or higher |
| OK | ![]() | REPLACE SIDE AUTO STEP MOTOR ASSEMBLY |
| NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
Test yourself
A quick Toyota 4Runner quiz: every answer comes with an explanation and a link to the manual page.
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