Ford F-150 2001 Climate Control System Workshop Manual page 15

2001 F-150 Workshop Manual
C10 CHECK THE A/C PRESSURE CUTOFF SWITCH
C11 CHECK CIRCUIT 348 (VT)
Function Selector Switch C217
C12 CHECK CIRCUIT 295 (LB/PK)
http://www.fordtechservice.dealerconnection.com/pubs/content/~WS11/~MUS~LEN/18/...
Connect a fused jumper lead between the A/C pressure cutoff switch C170 pin 1, circuit 441 (RD/YE) and pin 3,
circuit 348 (VT).
Measure the voltage between the A/C cycling switch C139 pin 1, circuit 441 (RD/YE) and ground.
Is the voltage reading greater than 10 volts?
Yes
INSTALL a new A/C pressure cutoff switch. TEST the system for normal operation.
No
REPAIR Circuit 441 (RD/YE). TEST the system for normal operation.
Measure the resistance between the A/C pressure cutoff switch C170 pin 3, circuit 348 (VT) and the function
selector switch C217 pin 2, circuit 348 (VT).
Is the resistance less than 5 ohms?
Yes
GO to C12.
No
REPAIR circuit 348 (VT). TEST the system for normal operation.
Measure the voltage between the function selector switch C217 pin 1, circuit 295 (LB/PK) and ground.
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