Does the A/C compressor turn on?
Yes | GO to G18 | |
|---|---|---|
No | GO to G12 | |
G12 CHECK THE VOLTAGE TO THE A/C (AIR CONDITIONING) CLUTCH RELAY
Ignition OFF. Disconnect the A/C clutch relay. Ignition ON. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
A/C clutch relay socket 1 | Ground | |
A/C clutch relay socket 3 | Ground |
Are the voltages greater than 11 volts?
Yes | GO to G13 | |
|---|---|---|
No | VERIFY BJB fuses 23 (10A) and 42 (15A) are OK. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. | |
G13 BYPASS THE A/C (AIR CONDITIONING) CLUTCH RELAY
Ignition OFF. Connect a fused jumper wire:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
A/C clutch relay socket 3 | A/C clutch relay socket 5 |
Ignition ON.
Does the A/C compressor clutch engage?
Yes | REMOVE the fused jumper wire. INSTALL a new A/C clutch relay. | |
|---|---|---|
No | LEAVE the fused jumper wire installed. GO to G14 | |
G14 CHECK THE A/C (AIR CONDITIONING) COMPRESSOR CLUTCH FIELD COIL VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
Disconnect A/C compressor clutch field coil C100. Measure:
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.