Civic L4-1668cc 1.7L SOHC MFI (2003)
5. Connect the No.1 and No.2 terminals of the compressor clutch relay 4P socket with a jumper wire.
Does the compressor clutch click ?
YES - Go to step 6.
NO - 01 Model: Go to step 14.
02-04 Model: Go to step 17.
6. Disconnect the jumper wire.
7. Turn the ignition switch ON (II).
8. Measure the voltage between the No.3 terminal of the compressor clutch relay 4P socket and body ground.
Is there battery voltage?
YES - Go to step 9.
NO - Repair open in the wire between the No.14 fuse in the under-dash fuse/relay box and the compressor clutch relay.
9. Turn the ignition switch OFF.
10. Reinstall the compressor clutch relay.
11. Make sure the A/C switch is OFF.
12. Turn the ignition switch ON (II).
13. Using the Backprobe Set, measure the voltage between the No.18 terminal of ECM/PCM connector E (31P) and body ground with the ECM/PCM
