Toyota
Toyota Land Cruiser
 Service Manual
Air conditioning Rear cooling unit
On-vehicle inspection

1. INSPECT EXPANSION VALVE

(a) Check amount of gas during refrigeration cycle.

(b) Set on manifold gauge set.

(c) Start the engine.

(d) Operate the A/C system.

(e) Inspect the expansion valve.

  1.  Run the engine at 1,500 rpm for at least 5 minutes.
  2.  Check the high pressure reading is 1.37 - 1.57 MPa (14 - 16 kgf/cm2, 199 - 288 psi).
  3.  Check the low pressure reading.

If the low pressure reading is 0 kPa (0 kgf/cm2, 0psi), replace the expansion valve.

2. REMOVE REAR DOOR SCUFF PLATE RH

3. REMOVE REAR FLOOR MAT SUPPORT PLATE

4. REMOVE QUARTER TRIM PANEL RH

5. INSPECT THERMISTOR RESISTANCE

(a) Disconnect the connector.

(a) Disconnect the connector.

(b) Measure resistance between terminal 3 and 4.

Standard resistance: Approx. 1.5 kW at 25 C (77 F)

If resistance is not as specified, proceed "INSPECTION" on page AC-36 .

6. INSPECT MAGNETIC VALVE CONTINUITY

(a) Disconnect the connector.

(a) Disconnect the connector.

(b) Check the continuity exists between terminal 1 and 2.

If resistance is not as specified, proceed "INSPECTION" on page AC-36 .

7. CHECK FOR LEAKAGE OF REFRIGERANT

(a) Remove the power transistor.

(a) Remove the power transistor.

(b) Using a gas leak detector, check for leaks of refrigerant.

If there is a leakage, check the evaporator or tightening torque at the joints.

REASSEMBLY

Reassembly is in the reverse of disassembly (AC-34 ).

    More about Rear cooling unit:

    Disassembly

    Inspection

    On-vehicle inspection

    Removal

    Toyota Land Cruiser Service Manual / Air conditioning / Rear cooling unit / On-vehicle inspection

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