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Home >> Toyota >> 1996 >> 4 Runner 4WD V6-3.4L (5VZ-FE) >> Repair and Diagnosis >> Heating and Air Conditioning >> Relays and Modules - HVAC >> Control Module HVAC >> Testing and Inspection
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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.

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