DESCRIPTION
The main body ECU receives headlight dimmer switch information signals, and illuminates the front fog light.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses and bulbs for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. |
PERFORM ACTIVE TEST USING TECHSTREAM (FRONT FOG LIGHT RELAY) |
(a) Using the Techstream, perform the Active Test (See page
).
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Front Fog Light Relay |
Front fog light relay |
ON/OFF |
- |
OK:
Front fog light relay operates (front fog lights come on).
OK | ![]() |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
|
2. |
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
OK | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - FOG LIGHT ASSEMBLY) |
NG | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
VSC OFF Indicator Light Remains ON
DESCRIPTION
Operation of the VSC OFF switch changes the vehicle between normal mode, TRAC
OFF mode*1 (AUTO LSD mode*2) and VSC OFF mode. During normal mode, pressing the
VSC OFF switch for a short amount of time changes vehicle to TRAC OFF mode*1 (AUTO
...
Open Circuit in Transfer 4WD Position Switch Circuit (C1258,C1340)
DESCRIPTION
DTC Code
DTC Detection Condition
Trouble Area
C1258*1
C1340*2
An open circuit is detected in the EXI circuit of the skid control ECU.
Harness or connector
...