Transmission Connector Layouts

Transmission Connector Layouts


Connector Reference

PCM - C175T









Transmission Vehicle Harness - C168









Transmission Range (TR) Sensor - C167









Turbine Shaft Speed (TSS) Sensor - C143









Output Shaft Speed (OSS) Sensor - C193









Intermediate Shaft Speed Sensor Harness - C164









Transmission Range (TR) Sensor Diagnosis Chart





a Will read "Drive" if (D) is canceled.

A. TR_V is the voltage at the PCM pin 27 (TR3 Circuit) to signal return.
B. "In Between" reading could be caused by a shift cable or TR sensor misaligned or a TR sensor circuit failure of TR1, TR2, TR3 or TR.
C. TR_D: 1= Open TR switch, 0= Closed TR switch.
D. Readings: Taken from PCM signal pins for TR1, TR, TR3 or TR4 to signal return.
- Voltages for TR1, TR2, TR4:
- 0 = 0.0 volt.
- 1 = 9.0 - 14.0 volts.
- Voltage for TR3:(TR_V)
- 0 = 0.0 volt.
- 1 = 1.3 - 1.8 volts.

Wiggle Test Information for Open/Shorts
- TR4, TR3, TR2 and TR1 are all closed in PARK. PARK is a good position to check for intermittent open circuits (with scan tool monitoring TR_V).
- TR4, TR3, TR2 and TR1 are all open in OVERDRIVE (D), so OVERDRIVE is a good position to check for shorts to ground. To determine the shorted components while observing TR_V, unplug the TR C167 and see if the short goes away. If the short is still present unplug the transmission C168 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.