Toyota Corolla (E120) 2002–2008 Repair Manual / Heater & air conditioner / Refrigerant / On–vehicle inspection
Toyota Corolla (E120): On–vehicle inspection
1. Inspect refrigerant pressure with manifold gauge set
- this is a method in witch the trouble is located by using
a manifold gauge set. Read the manifold gauge pressure
when the these conditions are established.
Test conditions:
- temperature at the air inlet with the switch set at recirc is 30 – 35 °c (86 – 95 °f)
- engine running at 1500 rpm
- blower speed control switch at ”hi” position
- temperature control dial at ”cool” position a/c switch on
- fully open doors
- Normally functioning refrigeration system.
Gauge reading:
low pressure side:
0.15 – 0.25 Mpa (1.5 – 2.5 Kgf/cm2) high pressure side:
1.37 – 1.57 Mpa (14 – 16 kgf/cm2)
- Moisture present in refrigeration system.
Symptom |
Probable cause |
Diagnosis |
Remedy |
During operation, pressure on low pressure side sometimes become a vacuum and sometime normal | Moisture in refrigerating system freezes at expansion valve orifice causing a temporary stop of cycle, however, when it melts, normal state is restored. |
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- Insufficient cooling
Symptom |
Probable cause |
Diagnosis |
Corrective actions |
|
Gas leakage in refrigeration system |
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- Poor circulation of refrigerant
Symptom |
Probable cause |
Diagnosis |
Corrective actions |
|
Refrigerant flow obstructed by dirt in receiver | Receiver clogged | Replace condenser |
- Refrigerant does not circulate
Symptom |
Probable cause |
Diagnosis |
Corrective actions |
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|
Refrigerant does not circulate |
|
- Refrigerant overcharged or insufficient cooling of condenser
Symptom |
Probable cause |
Diagnosis |
Corrective actions |
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- Air present in refrigeration system
Symptom |
Probable cause |
Diagnosis |
Corrective actions |
|
Air entered in refrigerating system |
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- Expansion valve improperly
Symptom |
Probable cause |
Diagnosis |
Corrective actions |
|
Trouble in expansion valve |
|
Check expansion valve |
- Defective compression compressor
Symptom |
Probable cause |
Diagnosis |
Corrective actions |
|
Internal leak in compressor |
|
Repair or replace compressor |
Gauge readings (reference)
Other materials:
Speedometer sensor (atm)
Replacement
1. Remove air cleaner case
2. Remove air cleaner hose no.1
3. Remove speedometer sensor
disconnect the connector.
remove the bolt and speedometer sensor assembly.
remove the clip and driven gear from the speedometer
sensor.
4. Install speedometer sensor
...
Front axle lh hub bolt
Replacement
Hint: components:
1. Remove front wheel
2. Separate front disc brake caliper assy lh
3. Remove front disc
4. Remove front axle lh hub bolt
Using sst and a hammer handle or an equivalent, remove
the lh hub bolt.
Sst 09628–10011
5. Install front axle lh hub bolt
...
Folding the mirrors
Push the mirror back in the direction of the vehicle’s rear.
■Mirror angle can be adjusted when
► Vehicles without a smart key system
The engine switch is in the “ACC” or “ON” position.
►Vehicles with a smart key system
The engine switch is in ACCESSORY or IGNITION ...