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:

Disassembly
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Installation
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Canceling the power back door system (vehicles with power back door)
Turn the main switch off to disable the power back door system. Off On* *: The orange line at the top of the switch indicates that the power back door system is on. Luggage compartment light The luggage compartment light turns on when the back door is opened with the luggage ...

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