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A/C High Pressure Switch C1078

Fig 1: Identifying A/C High Pressure Switch C1078 Connector Pinouts
G03859387Courtesy of FORD MOTOR CO.
A/C HIGH PRESSURE SWITCH C1078 CONNECTOR PINOUTS REFERENCE

Pin Number(s) Circuit Designation/Description Normal Condition/Measurement
1 CKT 439 (TN/LG) high pressure switch to TXV Resistance of 0 ohms to chassis ground.
3 CKT 441 (RD/YE) A/C high pressure switch input Greater than 10 volts with the ignition on.
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