DESCRIPTION
The main body ECU (driver side junction block assembly) controls the fog light relay.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Active Test.
(e) Check that the relay operates.
Main Body
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 | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
INSPECT FOG LIGHT RELAY (FOG) |
(a) Remove the front fog light relay from the instrument panel junction block. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
3 - 5 |
Voltage is not applied between terminals 1 and 2 |
10 kΩ or higher |
3 - 5 |
Voltage is applied between terminals 1 and 2 |
Below 1 Ω |
NG | ![]() |
REPLACE FOG LIGHT RELAY |
|
3. |
CHECK HARNESS AND CONNECTOR (BATTERY - FRONT FOG LIGHT RELAY) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR (FRONT FOG LIGHT RELAY - MAIN BODY ECU) |
(a) Disconnect the D50 main body ECU (driver side junction block assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Front fog light relay terminal 2 - D50-4 (FFGO) |
Always |
Below 1 Ω |
D50-4 (FFGO) - Body ground |
Always |
10 kΩ or higher |
*1 |
Main Body ECU (Driver Side Junction Block Assembly) |
*3 |
Front view of wire harness connector (to Main Body ECU (Driver Side Junction Block Assembly)) |
*2 |
Front Fog Light Relay Terminal |
- |
- |
OK | ![]() |
REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Emission Control System
Parts Location
PARTS LOCATION
ILLUSTRATION
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT FUEL CUT-OFF RPM
(a) Increase the engine speed to at least 3500 rpm.
(b) Use a sound scope to check for injector operating soun ...
Parking Brake System
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple
suspected areas are listed, the potential causes of the symptoms are listed in order
of probability in the "Suspe ...
System Description
SYSTEM DESCRIPTION
1. FUNCTION DESCRIPTION
(a) Steering Cooperative Control
(1) Enhanced-VSC performs coordinated control consisting of VSC and electronic
power steering. By integrating these preventive safety functions, Enhanced-VSC ensures
excellent d ...