Lighting System Rear Fog Light Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING INTELLIGENT TESTER

INSPECT FUSE (RR FOG)

INSPECT REAR FOG LIGHT RELAY

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - REAR FOG LIGHT RELAY)

CHECK HARNESS AND CONNECTOR (REAR FOG LIGHT RELAY - MAIN BODY ECU)

CHECK HARNESS AND CONNECTOR (BATTERY - REAR FOG LIGHT RELAY)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to the ON position and turn the intelligent tester main switch on.
   

3. Turn the light control switch to the TAIL position.
   

4. Select the item below in the ACTIVE TEST and then check that the relay operates.
   
   

   Main Body (Main Body ECU):

   Item	Test Details	Diagnostic Note
   Rear Fog Light Relay	Rear fog light relay ON/OFF	-

   OK:

   Rear fog light relay operates. (Rear fog lights come on)
   

1. Remove the RR FOG fuse from the engine room R/B.
   

2. Measure the resistance of the fuse.
   

   Standard resistance:

   Below 1 Ω
   

1. Remove the rear fog light relay from the engine room No. 2 J/B.
   

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

   Standard resistance:

   Tester Connection	Specified Condition
   3 - 5	10 kΩ or higher
   	Below 1 Ω (When battery voltage is applied to terminals 1 and 2)

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

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   E8-14 - Body ground	Light control switch in TAIL and rear fog light switch OFF → ON	10 to 14 V → Below 1 V

1. Remove the rear fog light relay from the engine room No. 2 relay block.
   

2. Measure the voltage on the relay block side according to the value(s) in the table below.
   

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   Rear fog light relay terminal 2 - Body ground	Light control switch OFF → TAIL	10 to 14 V

1. Disconnect the E8 main body ECU connector.
   

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

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   E8-14 - Body ground	Light control switch OFF → TAIL	Below 1 V → 10 to 14 V

1. Remove the rear fog light relay from the engine room No. 2 relay block.
   

2. Measure the voltage on the relay block side according to the value(s) in the table below.
   

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   Rear fog light relay terminal 5 - Body ground	Always	10 to 14 V