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:
System Too Lean/ System Too Rich
DTC P0171 System Too Lean (Bank 1)
DTC P0172 System Too Rich (Bank 1)
DTC P0174 System Too Lean (Bank 2)
DTC P0175 System Too Rich (Bank 2)
DESCRIPTION
The fuel trim is related to the feedback compensation value, not to the basic
injection time. The fuel trim
consists of both the short-term ...
Clock
PARTS LOCATION
On-vehicle inspection
1. INSPECT INTEGRATION CONTROL & PANEL ASSEMBLY
Disconnect the A9 connector.
Measure the voltage according to the value(s) in the
table below.
Standard voltage
Measure the resistance according to the value(s) in
the ...
TC and CG Terminal Circuit
DESCRIPTION
DTC output mode is set by connecting terminals 13 (TC) and 4 (CG) of the
DLC3. The DTCs are indicated
by blinks of the tire pressure warning light.
WIRING DIAGRAM
HINT:
When each warning light blinks continuously, a ground short in the wiring of
terminal TC of the DLC3 or an ...
