Toyota RAV4 manuals

Toyota Sienna Service Manual: ACC Power Source Circuit

DESCRIPTION

This circuit supplies power to the A/C amplifier and the illumination for the clock.

WIRING DIAGRAM

ACC Power Source Circuit

INSPECTION PROCEDURE

1 INSPECT FUSE (ECU ACC)

(a) Remove the ECU ACC fuse from the engine room relay 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

IG Power Source Circuit
DESCRIPTION The main power source is supplied to the A/C amplifier when the ignition switch is turned to the ON position. The power source is used for operating the A/C amplifier and servo moto ...

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 ...

Other materials:

Disassembly
1. REMOVE MAGNETIC CLUTCH ASSEMBLY (a) Place the compressor and magnetic clutch in a vise. (b) Using locking pliers, hold the magnetic clutch hub. (c) Remove the bolt, magnetic clutch hub, and magnetic clutch washers. HINT: There is no set number of magnetic clutch washers because the ...

Diagnosis system
1. CHECK DLC3 The vehicle's ECU uses ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format NOTICE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not oper ...

Inspection
1. INSPECT REAR SPEED SENSOR (a) Remove the seat cushion and seatback. (b) Disconnect the speed sensor connector. (c) Measure the resistance between terminals 1 and 2 of the speed sensor connector OK: Resistance: 1.1 +- 0.2 kΩ at 25 +- 5 °C (d) Measure the resistance between ea ...

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