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Connector Reference and Terminal Readings

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying PCM
GF0000914Courtesy of FORD MOTOR CO.
Pin Number Circuit Description
3 Output shaft speed (OSS) sensor signal input
4 Intermediate shaft speed sensor signal input
11 Pressure control solenoid A (PC A)
15 Turbine shaft speed (TSS) sensor signal input
16 Digital transmission range (TR) sensor TR1 to PCM
17 Digital TR sensor TR2 to PCM
23 Pressure control solenoid B (PC B)
27 Digital TR sensor TR3A to PCM
28 Digital TR sensor TR4 to PCM
29 Transmission fluid temperature (TFT) sensor
34 Pressure control solenoid C (PC C)
41 Signal return
42 Shift solenoid A (SSA)
43 Shift solenoid B (SSB)
44 Shift solenoid C (SSC)
45 Shift solenoid D (SSD)
46 Torque converter clutch (TCC) solenoid
Fig 2: Identifying Transmission Vehicle Harness
GF0015416Courtesy of FORD MOTOR CO.
Pin Number Circuit Description
1 Pressure control solenoid B (PC B)
2 Transmission fluid temperature (TFT) sensor input
3 Solenoid power
4 Pressure control solenoid C (PC C)
5 Shift solenoid D (SSD)
6 Shift solenoid C (SSC)
11 Pressure control solenoid A (PC A)
12 Signal return
14 Torque converter clutch (TCC) solenoid
15 Shift solenoid B (SSB)
16 Shift solenoid A (SSA)
Fig 3: Identifying Digital Transmission Range (TR) Sensor
GF0015417Courtesy of FORD MOTOR CO.
Pin Number Circuit Description
2 Signal return
3 Digital transmission range (TR) sensor TR3A
4 Digital transmission range (TR) sensor TR1
5 Digital transmission range (TR) sensor TR2
6 Digital transmission range (TR) sensor TR4
7 Ground
8 Neutral switch sense input
9 Not used
10 Starter solenoid central power
11 Not used
12 Starter relay (overload protected)
Fig 4: Identifying Turbine Shaft Speed (TSS) Sensor
GF0015418Courtesy of FORD MOTOR CO.
Pin Number Circuit Description
1 Turbine shaft speed (TSS) sensor signal
2 Signal return
Fig 5: Output Shaft Speed (OSS) Sensor
GF0015418Courtesy of FORD MOTOR CO.
Pin Number Circuit Description
1 Output shaft speed (OSS) sensor signal
2 Signal return
Fig 6: Identifying Intermediate Shaft Speed Sensor Harness Connector
GF0015418Courtesy of FORD MOTOR CO.
DIGITAL TRANSMISSION RANGE (TR) SENSOR DIAGNOSIS CHART

Selector Lever Position PID: TR TR4 TR3 TR2 TR1 TR3_V PCM pin 27 to signal return
Park P Closed Closed Closed Closed 0.0 volts
Reverse R Open Open Closed Closed 1.3 - 1.8 volts
Neutral N Closed Open Open Closed 1.3 - 1.8 volts
Overdrive D Open Open Open Open 1.3 - 1.8 volts
Manual 3 3 Open Closed Open Closed 0.0 volts
Manual 2 2 Open Closed Closed Open 0.0 volts
Manual 1 1 Closed Closed Open Open 0.0 volts
  1. TR3_V is the voltage at the PCM pin 27 Circuit to signal return.
    • Voltages for TR1, TR2 and TR4: 
    • 0 = 0.0 volts.
    • 1 = 9.0-14.0 volts.
    • Voltage for TR3A: 
    • 0 = 0.0 volts.
    • 1 = 1.3-1.8 volts.

Wiggle Test Information for Open/Shorts

  1. TR4, TR3A, TR2 and TR1 are all closed in PARK. PARK is a good position to check for intermittent open circuits.
  2. TR4, TR3A, TR2 and TR1 are all open in OVERDRIVE, so OVERDRIVE is a good position to check for shorts to ground. To determine the shorted components while observing the TR PIDs, unplug the TR and see if the short goes away. If the short is still present, unplug the transmission harness and see if the short goes away. If the short is still present, then the short is in the PCM or vehicle harness. Remove the suspect circuit(s) wire terminal from the PCM connector. If the short is still present, then the PCM has an internal failure; otherwise the failure is in the vehicle harness.
Pin Number Circuit Description
1 Intermediate shaft speed sensor signal
2 Signal return