Control Module HVAC: Testing and Inspection

AIR CONDITIONING AMPLIFIER


INSPECT AMPLIFIER CIRCUIT







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






Test conditions:
- Ignition switch ON
- Blower speed switch HI
- A/C switch ON
- Temperature control lever MAX. COOL


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







2. Connect the connector to A/C amplifier and inspect wire harness side connector from the back side, as shown.







Test conditions:
- Ignition switch ON
- Blower speed switch HI
- A/C switch ON
- Temperature control lever MAX COOL
- Install manifold gauge set

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