Shift Solenoid Operation Chart
Pinpoint Test A-Shift SolenoidsSOLENOID APPLICATION CHART 1 Of 2:
SOLENOID APPLICATION CHART 2 Of 2:
1. When transmission fluid temperature is below 10°C (5-°F), then SSA=OFF, SSB=ON to prevent cold creep.
2. Not contributing to power flow.
3. 3.0L (4V) and 3.4L (4V) SHO.
4. When a manual pull-in occurs above a calibrated speed the transmission will not downshift from the higher gear until the vehicle speed drops below the calibrated speed.
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Shift Solenoid Failure Mode Charts
Shift Solenoid Failure "Always Off"
Failed OFF due to powertrain control module and/or vehicle wiring concerns, and/or solenoid electrically stuck off and/or hydraulically stuck off.
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Shift Solenoid Failure "Always On"
Failed ON due to Powertrain Control Module (PCM) and/or vehicle wiring concerns; solenoid electrically or mechanically stuck on.
A. TR_V is the voltage at the PCM Pin 64 (TR3A Circuit) to signal return.
B. "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, TR3A or TR4.
C. TR_D: 1 = Open digital TR switch, 0 = Closed digital TR switch.
D. Breakout Box Readings: Taken from PCM signal pins for TR 1, TR2, TR3A, TR4 to signal return.
- Voltages for TR1, TR2, TR4:
- 0 = 0.0 volts (circuit shorted to ground).
- 1 = 9.0-14.0 volts (open circuit).
- Voltages for TR3A:
- 0 = 0.0 volts (circuit shorted to ground).
- 0 = 1.3-1.8 volts (open circuit).
- 1.8-5.0 volts = Invalid Reading (open in wires or bad resistor in digital TR sensor).
Wiggle Test Information for Open/Shorts
A. TR4, TR3A, TR2, and TR4 are all closed in Park (shorted to signal return), so Park is a good position to check for intermittent open circuits (with scan tool monitoring TR_D).
B. TR4, TR3A, TR2, and TR4 are all open in OVERDRIVE, so OVERDRIVE is a good position to check for shorts to ground. To determine the shorted components while observing TR_D, 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.