Toyota RAV4 manuals

Toyota Sienna Service Manual: Back-up Power Source Circuit

DESCRIPTION

This is the back-up power source for the A/C amplifier. Power is supplied even when the ignition switch is off and is used for diagnostic trouble code memory, etc.

WIRING DIAGRAM

Back-up Power Source Circuit

INSPECTION PROCEDURE

1 INSPECT FUSE (ECU-B)

(a) Remove the ECU-B fuse from the engine room junction block.

(b) Measure the resistance according to the value(s) in the table below.

Standard resistance

2 CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY)

CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY)

(a) Disconnect the connector from the A/C amplifier.

(b) Measure the voltage according to the value(s) in the table below.

Standard voltage

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

ACC Power Source Circuit
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Air conditioning system (for manual air conditioning system)
...

Other materials:

Reassembly
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Installation
1. INSTALL POWER POINT SOCKET ASSEMBLY  Engage the 2 claws to install the power point socket assembly. 2. INSTALL QUARTER TRIM FRONT PANEL ASSEMBLY LH 3. INSTALL BACK DOOR SCUFF PLATE 4. INSTALL BACK DOOR WEATHERSTRIP 5. INSTALL REAR DOOR WEATHERSTRIP LH 6. INSTALL REAR DOOR S ...

Room light assembly
ON-VEHICLE INSPECTION 1. ROOM LIGHT ASSEMBLY NO.2  Check that the resistance exists between the terminals. Resistance: Below 1 Ω 2. INTERIOR DOME LIGHT SWITCH ASSEMBLY  Check that there is resistance between the terminals at each switch position as shown in the cha ...

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