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.
DTC No. |
Detection Condition |
Trouble Area |
---|---|---|
31 |
The side auto step motor hall sensor voltage is less than 4 V when the automatic running board is in operation. |
|
WIRING DIAGRAM
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (SIDE AUTO STEP MOTOR POWER SOURCE) |
(a) Disconnect the O25*1 and N23*2 side auto step motor assembly connector.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage: for LH
for RH
|
|
OK | ![]() |
REPLACE SIDE AUTO STEP MOTOR ASSEMBLY |
|
2. |
CHECK HARNESS AND CONNECTOR (SIDE AUTO STEP MOTOR - SIDE AUTO STEP CONTROLLER ECU) |
(a) Disconnect the A41 side auto step controller ECU assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A41-14 (SSR+) - Body Ground |
Always |
10 kΩ or higher |
A41-14 (SSR+) - A41-5 (SSR-) |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE SIDE AUTO STEP CONTROLLER ECU ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
System Diagram
SYSTEM DIAGRAM
Communication Table
Transmitting ECU
(Transmitter)
Receiving ECU
(Receiver)
Signal
Line
ECM
Power management control ECU
Crankshaft position sensor signa ...
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