Toyota RAV4 manuals

Toyota Sienna Service Manual: Refrigerant

On-vehicle inspection

1. INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET

(a) This method uses a manifold gauge set to locate problem areas. Read the manifold gauge pressure when these conditions are established.

Test conditions:

(b) Gauge readings (Reference)

INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET

Refrigerant

(1) Normally functioning refrigeration system

Gauge reading

(2) The A/C system periodically changes between normal and improper function due to moisture in the refrigerant system.

Refrigerant

(3) The A/C system does not function effectively due to insufficient cooling.

Refrigerant

(4) The A/C system does not function effectively due to poor circulation of the refrigerant.

Refrigerant

(5) The A/C system does not function intermittently because the refrigerant does not circulate.

Refrigerant

(6) The A/C system does not function effectively due to overcharged refrigerant or insufficient cooling of the condenser.

Refrigerant

Refrigerant

(7) The A/C system does not function due to air in the refrigeration system.

CAUTION: The low-pressure piping may be very hot and cause serious burns.

Refrigerant

(8) The A/C system does not function effectively due to an expansion valve malfunction.

Refrigerant

(9) The A/C system does not function due to a defective compressor.

Refrigerant

Gauge readings (Reference)

Refrigerant

Terminals of ecu
1. A/C AMPLIFIER HINT: Check from the rear of the connector while it is connected to the A/C amplifier. (a) Waveform 1: (b) Waveform 2: ...

Replacement
1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM SST 07110-58060 (07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070, 07117-88080) (a) Turn the A/C switch to ON. (b) Operating t ...

Other materials:

AVC-LAN Circuit
DESCRIPTION Each unit of the navigation system connected to the AVC-LAN (communication bus) transfers the signal of each switch by communication. When a short to +B or short to ground occurs in this AVC-LAN, the navigation system will not function normally as the communication is discontin ...

Removal
1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM (See page AC-172) 2. REMOVE NO. 2 AIR CLEANER INLET (See page EM- 28) 3. REMOVE FRONT BUMPER ASSEMBLY (See page ET-3) 4. DISCONNECT DISCHARGE HOSE SUB-ASSEMBLY (a) Remove the bolt and disconnect the discharge hose sub-assembly from the coo ...

Inspection
1. INSPECT BRAKE VACUUM CHECK VALVE ASSEMBLY (a) Check the vacuum check valve. (1) Slide the clip and disconnect the vacuum hose. (2) Remove the vacuum check valve. (3) Check that there is ventilation from the booster to the engine, and no ventilation from the engine to the booster. ...

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