Transmission Connector Layouts

Transmission Connector Layouts

Transmission Vehicle Harness - C1274










Transmission Internal Harness - C1274










Transmission Range (TR) Sensor - C167









Output Shaft Speed (OSS) Sensor Harness - C1107










Turbine Shaft Speed (TSS) Sensor Harness - C143










PCM Harness - C175T









Transmission Range (TR) Sensor Diagnosis Chart





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

A. TR3V is the voltage at the PCM pin 27 (TR3 Circuit) to signal return.
B. "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.
C. 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 vehicle harness connector and see if the short goes away. If the short is still present, then the short is in the transmission vehicle harness. Remove the suspect circuit(s) wire from the transmission vehicle harness. If the short is still present, then the PCM has an internal failure.