Toyota Sienna Service Manual: Front Fog Light Circuit
DESCRIPTION
The Multiplex network body ECU controls FOG relay when signal is received from headlight dimmer switch assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER
- Connect the intelligent tester to DLC3.
- Turn the ignition switch ON and push the intelligent tester main switch ON.
- Select the item below in the ACTIVE TEST and then check that the relay operates.
2 INSPECT FOG LIGHT RELAY
- Inspect fog light relay continuity.
Standard
3 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
- Measure voltage between the terminal B8-7 of the multiplex network body ECU in the instrument panel junction block assembly and body ground.
Voltage
4 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
- Remove the instrument panel junction block assembly.
- Measure voltage between each of the terminals as shown in the chart below.
Voltage
REPAIR OR REPLACE HARNESS OR CONNECTOR
DRL Relay Circuit
DESCRIPTION
The Multiplex network body ECU controls the DRL No.2 relay
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER
Connect the intelligent tester to DLC ...
Light Control Switch Circuit
DESCRIPTION
This circuit detects the state of the headlight dimmer switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
Connect the intelligent tester to DLC3.
...
Other materials:
Black Screen
INSPECTION PROCEDURE
1 CHECK DISPLAY SETTING
Check that the display is not in "Screen OFF" mode.
OK:
The display setting is not in "Screen OFF" mode.
2 CHECK IMAGE QUALITY SETTING
Check that the screen color quality can be set.
OK:
Setting is possible.
PRESS PA ...
Removal
1. REMOVE REAR DOOR WINDOW FRAME MOULDING
Remove the screw.
Using a heat light, heat the rear door window frame
moulding between 40 to 60 C (104 to 140 F).
NOTICE:
Do not heat the rear door window frame
moulding excessively.
Slide the rear door window frame moulding upward
to r ...
Removal
1. DRAIN BRAKE FLUID
NOTICE:
Wash brake fluid off immediately if it adheres to any
painted surface.
2. DISCONNECT BATTERY NEGATIVE TERMINAL
3. REMOVE AIR CLEANER ASSEMBLY WITH HOSE
4. REMOVE BRAKE ACTUATOR WITH BRACKET
(a) Release the latch of the brake actuator connector to
disconnect t ...
