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Home >> Lexus >> 1997 >> LX 450 L6-4.5L (1FZ-FE) >> Repair and Diagnosis >> Heating and Air Conditioning >> Control Module HVAC >> Testing and Inspection >> Air Conditioning Amplifier
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Air Conditioning Amplifier


INSPECTION

1. REMOVE GLOVE COMPARTMENT PARTS

2. INSPECT AMPLIFIER CIRCUIT

Terminal Identification:




Reference:





a. Disconnect the amplifier and inspect the connector on the wire harness side, as shown in the chart above. Test conditions:
^ A/C switch ON
^ Temperature control lever MAX COOL
^ Blower control switch HI
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.

Terminal Identification:




Reference:





b. Connect the connector to A/C amplifier and inspect wire harness side connector from the back side, as shown in the chart above.
Test conditions:
^ Ignition switch ON
^ A/C switch ON
^ Temperature control lever MAX COOL
^ Blower control switch HI
^ 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.