Component Tests and General Diagnostics

LIGHTING: LIGHTING SYSTEM: Front Fog Light Circuit

Front Fog Light Circuit

DESCRIPTION

The front controller receives fog light switch information from the combination switch, and turns on the fog light.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Body No. 5 / Active Test.
(e) Check the operation.

Body No. 5 (Front Controller)





OK:
Fog light illuminates.
NG -- INSPECT FUSE (FR FOG)
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT FUSE (FR FOG)
(a) Remove the FR FOG fuse from the engine room No. 2 relay block.
(b) Measure the resistance of the fuse.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (ENGINE ROOM NO. 2 RELAY BLOCK - BATTERY)




(a) Disconnect the 2E relay block connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (ENGINE ROOM NO. 2 R/B - FOG LIGHT)




(a) Check the wire harness between the fog light (front LH) and engine room No. 2 relay block, and the fog light (front LH) and body ground.
(1) Disconnect the 2G relay block connector.
(2) Disconnect the B13 fog light connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard resistance:









(b) Check the wire harness between the fog light (front RH) and engine room No. 2 relay block, and the fog light (front RH) and body ground.
(1) Disconnect the 2G relay block connector.
(2) Disconnect the B1 fog light connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE ENGINE ROOM NO. 2 R/B (FRONT CONTROLLER)