DESCRIPTION
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. |
WIRING DIAGRAM
PROCEDURE
1. |
INSPECT SIDE AUTO STEP MOTOR ASSEMBLY |
(a) Disconnect the O25*1 or N23*2 side auto step motor assembly connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance: for LH
for RH
|
|
NG | ![]() |
REPLACE SIDE AUTO STEP MOTOR ASSEMBLY |
|
2. |
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 |
Disassembly
DISASSEMBLY
PROCEDURE
1. FIX REAR DIFFERENTIAL CARRIER ASSEMBLY IN PLACE
2. INSPECT RUNOUT OF REAR DRIVE PINION COMPANION FLANGE SUB-ASSEMBLY REAR
(a) Using a dial indicator, measure the runout of the companion flange vertically
and laterally.
Dista ...
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / (desired system) / Trouble Codes.
(e) Check the details of the DTC(s)
...