Toyota RAV4 manuals

Toyota Sienna Service Manual: Illumination Circuit

DESCRIPTION

The Multiplex network body ECU controls illumination light as shown in the chart below.

  1.  Room light assembly (Interior light, luggage component light) and courtesy light with DOOR position
  2.  Map light assembly (Personal light)
  3. Transponder key amplifier (Ignition key cylinder light)

WIRING DIAGRAM

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Connect the intelligent tester to DLC3.
  2.  Turn the ignition switch ON and push the intelligent tester main switch ON.
  3.  Select the item below in the ACTIVE TEST and then check that the relay operates

DATA LIST / AIR CONDITIONER

2 INSPECT LIGHT CONTROL RELAY

 INSPECT LIGHT CONTROL RELAY

  1. Check that there is resistance between the terminals at each switch position as shown in the chart.

Resistance

Resistance

3 INSPECT INTERIOR DOME LIGHT SWITCH ASSEMBLY

INSPECT INTERIOR DOME LIGHT SWITCH ASSEMBLY

  1. Inspect interior dome light relay continuity.

Resistance

Resistance

4 INSPECT INTERIOR LIGHT

  1. Inspect the each of interior light

5 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

  1. Measure voltage between each of the terminals as shown in the chart below

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

Voltage

Voltage

Voltage

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

Door LOCK Position Circuit
DESCRIPTION This circuit detects the state of the door lock detection sensor and send it to the Multiplex network body ECU. WIRING DIAGRAM INSPECTION PROCEDURE 1 READ VALUE OF INTELLIGENT T ...

Parking Brake Switch Circuit
DESCRIPTION The Multiplex network body ECU receives parking brake switch signal. WIRING DIAGRAM INSPECTION PROCEDURE 1 READ VALUE OF INTELLIGENT TESTER Connect the intelligent tester to DL ...

Other materials:

DSP Error
DTC 44-78 DSP Error DESCRIPTION DTC No. DTC Detection Condition Trouble Area 44-78 An error occurs during the decode process (MP3 / WMA). - INSPECTION PROCEDURE HINT: After the inspection is completed, clear the DTCs. NOTICE:  Th ...

Front Occupant Classification Sensor RH Collision Detection
DTC B1786 Front Occupant Classification Sensor RH Collision Detection DESCRIPTION DTC B1786 is output when the occupant classification ECU receives a collision detection signal sent by the front occupant classification sensor RH if an accident occurs. DTC B1786 is also output when the front ...

Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
HINT: This DTC relates to the thermostat. DESCRIPTION This DTC is set when the Engine Coolant Temperature (ECT) does not reach 75°C (167°F) despite sufficient engine warm-up time. MONITOR DESCRIPTION The ECM estimates the ECT based on the starting temperature, engine loads, a ...

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