Toyota Sienna Service Manual: Headlight Relay Circuit
DESCRIPTION
The Multiplex network body ECU controls HEAD 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
BODY NO. 1:
2 INSPECT HEADLIGHT RELAY
- Inspect headlight relay continuity.
Resistance
3 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
- Measure voltage between the terminal as shown in the chart below
Voltage
REPAIR OR REPLACE HARNESS OR CONNECTOR
Ignition Switch Circuit
DESCRIPTION
The Multiplex network body ECU receives the ACC and IG signals from the
ignition switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
Connect the in ...
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 ...
Other materials:
Map Display Incomplete
INSPECTION PROCEDURE
1 CHECK MAP DISC
Check that the map disc is not deformed or cracked.
OK:
No deformations or cracks on map disc.
2 CHECK DISPLAY
Check that displays other than the navigation display are
complete.
OK:
No other incomplete displays are found.
REPLACE RADIO ...
Installation
1. INSTALL SIDE REAR WINDOW WEATHERSTRIP LH
2. INSTALL QUARTER WINDOW LOCK ASSEMBLY LH
3. INSTALL POWER VENT WINDOW MOTOR
ASSEMBLY LH
4. INSTALL SIDE WINDOW ASSEMBLY REAR LH
5. INSTALL RR WINDOW SIDE GARNISH ASSEMBLY
LH
6. INSTALL RR WINDOW SIDE GARNISH ASSEMBLY
NO.2 LH
7. REMOVE QUARTER TR ...
Changing the engine switch positions
“LOCK”
The steering wheel is locked and
the key can be removed. (The key
can be removed only when the
shift lever is in “P”.)
“ACC”
Some electrical components such
as the audio system can be used.
“ON”
All electrical components can be
used.
“START”
...