Prelude L4-2056cc DOHC (1990)
A/C Compressor Control Unit: Testing and Inspection
Compressor Control Unit Input Tests
NOTE:
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Make sure all connectors are clean and tight.
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Make all tests from the wire side of the connector with a digital multi-tester.
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Any abnormality found during these tests must be corrected before continuing. If all tests produce the desired results, substitute a known-good
control unit and retest.
Perform the following tests with the A/C control unit's 12P connector disconnected, and the ignition switch, blower switch, and A/C switch ON.
Perform the following tests with A/C control unit connected, engine running and the A/C system turned ON.
