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

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Other materials:

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General driving notes
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