Lighting System Front Fog Light Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING GTS (FRONT FOG LIGHT)

INSPECT FOG LIGHT RELAY (FR FOG)

CHECK HARNESS AND CONNECTOR (FOG LIGHT RELAY [FR FOG] - BATTERY)

CHECK HARNESS AND CONNECTOR (FOG LIGHT - FOG LIGHT RELAY [FR FOG] AND BODY GROUND

CHECK HARNESS AND CONNECTOR (FOG LIGHT - FOG LIGHT RELAY [FR FOG] - COWL SIDE JUNCTION BLOCK LH

CHECK COWL SIDE JUNCTION BLOCK LH

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

Inspect the fuses and bulbs for circuits related to this system before performing the following inspection procedure.

1. Using the GTS, perform the Active Test (Click here).
   
   

   Main Body

   Tester Display	Test Part	Control Range	Diagnostic Note
   Front Fog Light Relay	Front fog light	ON or OFF	-

   OK:

   Fog light turns on/turns off.
   

1. Remove the fog light relay from the engine room relay block, junction block.
   

2. Inspect the fog light relay (Click here).
   

1. Remove the fog light relay from the engine room relay block, junction block.
   

2. Measure the voltage according to the value(s) in the table below.
   

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   Fog light relay terminal 2 - Body ground	Light control switch tail	11 to 14 V
   Fog light relay terminal 5 - Body ground	Always

   Text in Illustration

   *a	Front view of wire harness connector (to Fog Light Relay [FR FOG])

1. Remove the fog light relay from the engine room relay block, junction block.
   

2. Disconnect the B5*1 and B6*2 light connectors.
   

   1. *1: for LH
      
   2. *2: for RH
      

3. Measure the resistance according to the value(s) in the table below.
   
   

   Standard Resistance:

   for LH

   Tester Connection	Condition	Specified Condition
   Fog light relay terminal 3 - B5-2 (B)	Always	Below 1 Ω
   B5-1 (E) - Body ground	Always
   B5-2 (B) - Body ground	Always	10 kΩ or higher

   for RH

   Tester Connection	Condition	Specified Condition
   Fog light relay terminal 3 - B6-2 (B)	Always	Below 1 Ω
   B6-1 (E) - Body ground	Always
   B6-2 (B) - Body ground	Always	10 kΩ or higher

1. Remove the fog light relay from the engine room relay block, junction block.
   

2. Disconnect the 2H cowl side junction block LH connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   Fog light relay terminal 1 - 2H-31	Always	Below 1 Ω
   Fog light relay terminal 3 - Body ground	Always	10 kΩ or higher

1. for LHD:
   

   1. Remove the cowl side junction block assembly (Click here).
      

   2. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH (Click here).
      

2. for RHD:
   

   1. Remove the cowl side junction block assembly (Click here).
      

   2. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH (Click here).
      

      Standard Resistance:

      Tester Connection	Condition	Specified Condition
      2H-31 - A-7 (FFGO)	Always	Below 1 Ω

      Text in Illustration

      *a	Component without harness connected (Cowl Side Junction Block LH)