Toyota Sienna Service Manual: Refrigerant

Toyota Sienna Service Manual / Air conditioning / 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:

Temperature at the air inlet is 30 to 35°C (86 to 95°F).
Engine is running at 1,500 rpm.
All doors are fully open.
Blower speed control switch is at HI.
Temperature control switch is at MAX. COOL.
A/C switch is ON.

(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

(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:

Wrong Disc/ Disc cannot be Read
DTC 44-41 Wrong Disc DTC 44-42 Disc cannot be Read DESCRIPTION DTC No. DTC Detecting Condition Trouble Area 44-41 An unsuitable disc is inserted DVD Television display assembly 44-42 The disc cannot be read. IN ...

Disassembly
1. FIX FRONT SHOCK ABSORBER WITH COIL SPRING (a) Install 2 nuts and a bolt to the bracket at the lower side of the front shock absorber with coil spring and secure it in a vise. 2. REMOVE FRONT SUSPENSION SUPPORT SUBASSEMBLY LH (a) Using SST, compress the front coil spring LH SST 09727-300 ...

Gauges and meters
The displayed content may differ depending on the type of meter. Vehicles with monochrome display Vehicles with color display Tachometer Displays the engine speed in revolutions per minute Multi-information display Presents the driver with a variety of driving-related d ...