Control Module HVAC: Testing and Inspection

1. Single A/C and 4-Door dual A/C:
INSPECT A/C AMPLIFIER CIRCUIT
a. Remove lower No.2 finish panel




b. Disconnect the connector from amplifier and inspect the connector on wire harness side, as shown in the chart. Test conditions:
- Turn ignition switch to ON
- Blower speed control switch at "HI" position




If the circuit is not as specified, inspect the circuit connected to other parts.




c. Connect the connector to amplifier and inspect the wire harness connector from the back side, as shown in the chart below.
Test conditions:
- Running engine at idle speed
- Blower speed control switch at "HI" position
- Temperature control dial at "Max. COOL" position
- A/C switch ON
- Set manifold gauge set.




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

2. 5-Door dual A/C:
INSPECT A/C AMPLIFIER CIRCUIT




a. Disconnect the connector from amplifier and inspect the connector on wire harness side, as shown in the chart.
Test conditions:
- Turn ignition switch to ON




If the circuit is not as specified, inspect the circuits connected to other parts.




b. Connect the connector to the amplifier and inspect the wire harness side connector from the back side, as shown in the chart.
Test conditions:
- Running engine at idle speed
- Front A/C and rear A/C blower switches at "HI" position
- Front A/C and rear A/C temperature control dials at "Max. COOL" position
- A/C switch ON
- Set manifold gauge set




- 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.