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Home >> Toyota >> 1999 >> Avalon XLS V6-3.0L (1MZ-FE) >> Repair and Diagnosis >> Heating and Air Conditioning >> Control Module HVAC >> Testing and Inspection >> Air Conditioning Amplifier >> Automatic A/C
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Automatic A/C

1. REMOVE HEATER CONTROL SET SCREWS AND PULL OUT HEATER CONTROL ASSEMBLY

2. INSPECT AMPLIFIER CIRCUIT
a. Turn ignition switch to ON.







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

- If the 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 connectors to the amplifier and inspect the wire harness side connector from the back side, as shown in the chart.
Test condition:

- Running engine at idle speed
- If the 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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