DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (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 RELAY [FR FOG] - MAIN BODY ECU [COWL SIDE JUNCTION BLOCK LH])
LIGHTING SYSTEM - Front Fog Light Circuit
DESCRIPTION
The main body ECU receives a front fog light switch information signal from the light control switch (front fog switch), and illuminates the front fog lights.
WIRING DIAGRAM
INSPECTION PROCEDURE
- Inspect the fuses and bulbs for circuits related to this system before performing the following inspection procedure.
| 1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (FRONT FOG LIGHT) |
Using the intelligent tester, perform the Active Test ().
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.
| OK | |
| |
| REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) |
|
| 2.INSPECT FOG LIGHT RELAY (FR FOG) |
Remove the fog light relay from the engine room relay block, junction block.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| 3 - 5 | Battery voltage not applied to terminals 1 and 2 | 10 kΩ or higher |
| Battery voltage applied to terminals 1 and 2 | Below 1 Ω |
| | REPLACE FOG LIGHT RELAY (FR FOG) |
|
|
| 3.CHECK HARNESS AND CONNECTOR (FOG LIGHT RELAY [FR FOG] - BATTERY) |
Remove the fog light relay from the engine room relay block, junction block.
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]) |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 4.CHECK HARNESS AND CONNECTOR (FOG LIGHT RELAY [FR FOG] - MAIN BODY ECU [COWL SIDE JUNCTION BLOCK LH]) |
Remove the fog light relay from the engine room relay block, junction block.
Disconnect the E1 main body ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| Fog light relay terminal 1 - E1-4 (FFGO) | Always | Below 1 Ω |
| Fog light relay terminal 1 - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK | |
| |
| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE ()
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