Toyota RAV4 manuals

Toyota Sienna Service Manual: Taillight Relay Circuit

DESCRIPTION

The Multiplex network body ECU controls TAIL 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 TAIL LIGHT RELAY

 INSPECT TAIL LIGHT RELAY

  1. Inspect tail light relay continuity.

Resistance

Resistance

3 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

  1. Measure voltage between the terminal 1A-1 and body ground.

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

Resistance

Resistance

4 INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

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

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

Voltage

Voltage

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

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Headlight assembly
...

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