Toyota RAV4 manuals

Toyota Sienna Service Manual: ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the theft deterrent (warning) ECU.

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 INSPECT FUSE (ECU-B)

  1. Remove the ECU-B fuse from the engine room J/B.
  2. Measure the resistance.

    Standard resistance: Below 1 Ω

2 CHECK INSTRUMENT PANEL J/B ASSEMBLY (POWER SOURCE)

 CHECK INSTRUMENT PANEL J/B ASSEMBLY (POWER SOURCE)

  1. Disconnect the 1C J/B connector.
  2.  Measure the voltage according to the value(s) in the table below.

Standard voltage

Standard voltage

3 CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - BODY GROUND)

CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - BODY GROUND)

  1. Disconnect the 1K and 1L J/B connector.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

REPLACE INSTRUMENT PANEL J/B ASSEMBLY

Security Indicator Light Circuit
DESCRIPTION Even when the theft deterrent system is in the disarmed state, the security indicator blinks due to a signal output from the immobiliser system. The security indicator blinks continuou ...

Engine hood courtesy switch
Inspection 1. INSPECT ENGINE HOOD COURTESY SWITCH  Measure the resistance according to the value(s) in the table below. Standard resistance If the result is not as specified, r ...

Other materials:

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Removal
1. REMOVE REAR DOOR SCUFF PLATE 2. REMOVE REAR DOOR WEATHERSTRIP 3. REMOVE BACK DOOR WEATHERSTRIP 4. REMOVE BACK DOOR SCUFF PLATE 5. REMOVE FRONT QUARTER TRIM PANEL ASSEMBLY  Remove the floor anchor cover.  Remove the bolt and disconnect the No. 2 rear seat outer belt assem ...

Operation check
1. REMOVE CHECK FUNCTION  Check that the key reminder warning buzzer sounds.  With the driver side door closed, insert the key into the ignition key cylinder and then turn the key to LOCK or ACC.  Check that the buzzer sounds intermittently if the driver side door ...

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