Pinpoint Test B: THE PARK SWITCH IS INOPERATIVE
- B1 CHECK CIRCUIT 15-TA34 (GN/YE) FOR OPEN
- Disconnect: Transmission Shift Selector C307.
- Key in ON position.
- Measure the voltage between transmission shift selector C307 pin 3, circuit 15-TA34 (GN/YE), harness side and ground.
Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
- Yes
: GO to B2.
- No
: REPAIR the circuit. TEST the system for normal operation.
- B2 CHECK FOR VOLTAGE ON CIRCUIT 8-TA34 (WH)
- Connect: Transmission Shift Selector C307.
- Disconnect: Instrument Cluster C220b.
- Select PARK.
- Key in ON position.
- Measure the voltage between instrument cluster C220b pin 8, circuit 8-TA34 (WH), harness side and ground.
Courtesy of FORD MOTOR CO.
- Is the voltage greater than 10 volts?
- Yes
: INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER
. TEST the system for normal operation.
- No
: GO to B3.
- B3 CHECK CIRCUIT 8-TA34 (WH) FOR SHORT TO GROUND
- Key in OFF position.
- Disconnect: Transmission Shift Selector C307.
- Measure the resistance between transmission shift selector C307 pin 8, circuit 8-TA34 (WH), harness side and ground.
Courtesy of FORD MOTOR CO.
- Is the resistance greater than 10,000 ohms?
- Yes
: GO to B4.
- No
: REPAIR the circuit. TEST the system for normal operation.
- B4 CHECK CIRCUIT 8-TA34 (WH) FOR OPEN
- Measure the resistance between transmission shift selector C307 pin 8, circuit 8-TA34 (WH), harness side and instrument cluster C220b pin 8, circuit 8-TA34 (WH), harness side.
Courtesy of FORD MOTOR CO.
- Is the resistance less than 5 ohms?
- Yes
: INSTALL a new shifter harness. TEST the system for normal operation.
- No
: REPAIR the circuit. TEST the system for normal operation.