Transmission Connector Layouts

Transmission Connector Layouts

Transmission Vehicle Harness Connector - C1576










Transmission Internal Harness Connector - C1576










Transmission Range (TR) Sensor Connector - C167









Output Shaft Speed (OSS) Sensor Harness Connector - C193










Turbine Shaft Speed (TSS) Sensor Harness Connector - C143










PCM Harness Connector - C175T









Transmission Range (TR) Sensor Diagnosis Chart





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

1. TR3V is the voltage at the PCM pin 38 (TR3 Circuit) to signal return.
2. "In Between" reading could be caused by a selector lever cable or TR sensor misaligned or a TR sensor circuit failure of TR1, TR2, TR3 or TR4.
3. Readings taken from PCM signal pins for TR1, TR2, TR3, TR4 to signal return.
- Voltages for TR1, TR2, TR4:
- 0 = 0.0 volt.
- 1 = 9.0-14.0 volts.
- Voltage for TR3:
- 0 = 0.0 volt.
- 1 = 1.3-1.8 volts.

Wiggle Test Information For Open/Shorts
- TR4, TR3, TR2 and TR are all closed in PARK. PARK is a good position to check for intermittent open circuits (with diagnostic tool monitoring TR).
- TR4, TR3, TR2 and TR1 are all open in (D), so (D) is a good position to check for shorts to ground. To determine the shorted components while observing TR, unplug the TR sensor 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 from the PCM vehicle harness. If the short is still present, then the PCM has an internal failure. Otherwise the failure is in the vehicle harness.