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Home >> Toyota >> 2002 >> Corolla LE Sedan L4-1.8L (1ZZ-FE) >> Repair and Diagnosis >> Heating and Air Conditioning >> Control Module HVAC >> Testing and Inspection
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Control Module HVAC: Testing and Inspection

AIR CONDITIONING AMPLIFIER

ON-VEHICLE INSPECTION

INSPECT AMPLIFIER CIRCUIT
a. Remove lower panel.







b. Disconnect the connector and inspect the connector on wire harness side, as shown in the chart.

Test conditions:
- Ignition switch ON
- Blower speed control switch at "HI" position

If circuit is as specified, try to replace the amplifier with a new one. If the circuit is not as specified, inspect the circuits connected to other parts.







c. Connect the connector to amplifier and inspect wire harness side connector from the back side, as shown in the chart.

Test conditions:
- Running engine at idle speed
- Blower speed control switch at "HI" position
- A/C switch ON
- Temperature control dial at "MAX. COOL" position
- Set on manifold gauge set

If circuit is as specified, try to replace the amplifier with a new one. If the circuit is not as specified, inspect the circuits connected to other parts.
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