Test C: A/C Compressor Relay Test

1. Use a test lamp to check the voltage to ground at the A/C Compressor Relay at the terminals listed in the following table. Leave the A/C Compressor Relay in place.

Test C A/C Compressor Relay Test:

^ If all tests are good, but compressor does not operate, repair open in LT GRN wire (66) to Pressure Cycling Switch (if equipped) or the A/C High Pressure Cut-Out Switch (if equipped).
^ If the test lamp does not light at terminal 1, check Fuse 7 and check the BRN wire (50) for an open.
^ If test lamp does not light at terminal 5, proceed to A/C Compressor Control Output Test.
^ If test lamp does not light between terminals 5 and 2, check BLK wire (150) for an open.
^ If all tests are good, except terminal 4, replace A/C Compressor Relay.