Toyota 4Runner: Short to Battery in Motor RH Circuit (25,26)
DESCRIPTION
When there is a short to battery in the side auto step motor circuit, the side auto step controller ECU assembly will not operate the automatic running board.
|
DTC No. |
Detection Condition |
Trouble Area |
|---|---|---|
|
25 |
Short to battery in the stowing or deploying side of the side auto step motor LH circuit when the automatic running board is not in operation. |
|
|
26 |
Short to battery in the stowing or deploying side of the side auto step motor RH circuit when the automatic running board is not in operation. |
WIRING DIAGRAM
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PROCEDURE
|
1. |
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 voltage according to the value(s) in the table below.
Standard Voltage:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A42-3 (STW1) - Body ground |
When the automatic running board LH is not in operation. |
Below 1 V |
|
A42-4 (DPL1) - Body ground |
When the automatic running board LH is not in operation. |
Below 1 V |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A42-2 (STW2) - Body ground |
When the automatic running board RH is not in operation. |
Below 1 V |
|
A42-1 (DPL2) - Body ground |
When the automatic running board RH is not in operation. |
Below 1 V |
| OK | .gif) |
REPLACE SIDE AUTO STEP CONTROLLER ECU ASSEMBLY |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Short to Battery in Hall Effect Sensor Power Circuit (32)
DESCRIPTION
When there is a short to battery in the side auto step motor hall sensor power
circuit, the side auto step controller ECU assembly will not operate the automatic
running board.
...
Short to GND in Hall Effect Sensor Power Circuit (31)
DESCRIPTION
When there is a short to GND in the side auto step motor hall sensor power circuit,
the side auto step controller ECU assembly does not operate the automatic running
board.
...
Other materials about Toyota 4Runner:
Initialization
INITIALIZATION
1. INITIALIZE AUTOMATIC RUNNING BOARD SYSTEM
NOTICE:
When a side auto step controller ECU assembly is replaced, the side auto step
controller ECU assembly must be initialized. Functions such as deploying/stowing
and jam protection do not ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL BRAKE ACTUATOR BOLT CUSHION
(a) Install the 3 brake actuator bolt cushions to the brake actuator bracket.
2. INSTALL BRAKE ACTUATOR CASE COLLAR
(a) Install the 3 brake actuator case collars to the brake actuator bolt cush ...
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