Pinpoint Tests - OSC Equipped Vehicle

Pinpoint Tests - OSC Equipped Vehicle

Any time an electrical connector or solenoid body is disconnected, inspect the connector for terminal condition, corrosion and contamination. Also inspect the connector seal for damage. Clean, repair or install new components as required.

Digital Transmission Range (TR) Sensor Diagnosis Chart

Digital Transmission Range (TR) Sensor Diagnosis Chart:

A. "In Between" reading could be caused by a shift cable or digital TR sensor misaligned or a digital TR sensor circuit failure of TR1, TR2, TR3 or TR4.

B. TR PIDs: 1= Open digital TR switch, 0= Closed digital TR switch.

C. VCM Readings: Taken from PCM signal pins for TR1, TR2, TR3 and TR4 to signal return.

Wiggle Test Information for Open/Shorts
A. Check TR1, TR2, TR3 and TR4 circuits for an intermittent open with the TR sensor positioned so that suspect circuit is in the closed position and monitor the TR PIDs with the scan tool.

B. Check TR1, TR2, TR3 and TR4 circuits for an intermittent short with the TR sensor positioned so that suspect circuit is in the open position and monitor the TR PIDs with the scan tool. To determine the shorted components while observing TR PIDs, unplug the TR and see if the short goes away. If the short is still present unplug the transaxle 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.

Shift Solenoid Pre-Diagnosis
Use the following shift solenoid operation information when carrying out Pinpoint Test A. Test A: Transaxle Control Solenoids

Solenoid Operation Chart

Solenoid Operation Chart:

Shift Solenoid Failure Mode Chart "Failed ON" or "Failed OFF"
Failed ON/OFF due to PCM and/or vehicle wiring concerns and/or solenoid electrically, mechanically or hydraulically stuck on/off.

SSA

SSA:

SSB

SSB:

SSC

SSC:

SSD

SSD:

SSE