PROBLEM SYMPTOMS TABLE
HINT:
Symptom |
Suspected Area |
See page |
---|---|---|
The automatic running board does not function. |
PRB fuse |
|
Side auto step switch assembly |
|
|
Proceed to "Side Auto Step ECU Power Source Circuit" |
|
|
Proceed to "Side Auto Step Switch Circuit" |
|
|
Proceed to "Door Courtesy Switch Circuit" |
|
|
Side auto step controller ECU assembly |
|
|
The automatic running board is not stowed even when the door is closed. |
Proceed to "Door Courtesy Switch Circuit" |
|
Side auto step controller ECU assembly |
- |
|
The automatic running board is not stowed even when the vehicle is moving. |
Proceed to "Speed Signal Circuit" |
|
Main body ECU (Multiplex network body ECU) |
- |
|
The automatic running board reverses operation during deploying or stowing movement. |
Check that there is no foreign object blocking the automatic running board. |
- |
Check that there is no damage to the automatic running board link. |
- |
|
Side auto step motor assembly |
- |
Power Supply Drive Circuit (C1257)
DESCRIPTION
The motor relay (semiconductor relay) is built into the master cylinder solenoid
and drives the pump motor based on a signal from the skid control ECU.
DTC Code
DTC Detection Condition
Trouble Area
...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND DRIVER SIDE JUNCTION
BLOCK ASSEMBLY
(a) Remove the main body ECU (multiplex network body ECU) from the driver side
junction block assembly (See page ).
(b) Measure the resistanc ...