System Diagnosis

^ Use the Isolation Test below, in sequence, to choose the proper diagnostic tests.
^ Diagnostic Tests follow the Isolation Test. Testing and Inspection





Isolation Test Table 1 of 3


Reconnect the A/C Compressor Control Relay
^ If A/C Compressor Clutch engages, go to Test A ( ECM Compressor Control Test ). Test A - Compressor Clutch Test
^ If A/C Compressor Clutch does not engage, go to Table 3.
Isolation Test Table 2 of 3






Isolation Test Table 3 of 3