Toyota RAV4 manuals

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

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

BODY NO. 1:

BODY NO. 1

2 INSPECT HEADLIGHT RELAY

 INSPECT HEADLIGHT RELAY

  1. Inspect headlight relay continuity.

Resistance

Resistance

3 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

  1. Measure voltage between the terminal as shown in the chart below

Voltage

Voltage

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

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:

Removal
HINT:  Use the same procedures for the RH side and LH side.  The procedures listed below are for the LH side. 1. PRECAUTION CAUTION: Be sure to read "PRECAUTION" thoroughly before servicing. 2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait for 90 se ...

For vehicles equipped with mobile communication systems
FOR VEHICLES EQUIPPED WITH MOBILE COMMUNICATION SYSTEMS (a) Install the antenna far away from the ECU and sensors of the vehicle electronic systems as possible. (b) Install an antenna feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the vehicle electronic systems. For de ...

Diagnostic trouble code chart
HINT: If a trouble code is displayed during the DTC check, check the circuit indicated by the DTC. For details of each code, turn to the page for the respective DTC Code. in the DTC chart. Inspect the fuse and relay before investigating the trouble areas as shown in the table below. ...

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