Automatic Transaxle -- 4T65-E - Diagnosis & Testing: Other Pontiac Montana I

Condition 1

The change in transmission fluid temperature is 1.5°C (2°F) or less since start-up for at least 6 minutes and 49 seconds continuous.

Condition 2

The change in transmission fluid temperature is greater than 20°C (36°F) within 0.2 seconds and this occurs at least 14 times within 7 seconds.

The PCM commands 1st gear and the gear ratio indicates 2nd gear (1.52:1 to 1.62:1) for 1 second.

The PCM commands 4th gear and the gear ratio indicates 3rd gear (0.95:1 to 1.05:1) for 1 second.

The PCM commands 2nd gear and the gear ratio indicates 1st gear (2.87:1 to 2.97:1) for 1 second.

The PCM commands 3rd gear and the gear ratio indicates 4th gear (0.65:1 to 0.75:1) for 1 second.

The PCM commands the solenoid ON and voltage feedback remains high (B+).

The PCM commands the solenoid OFF, and the voltage feedback remains low (0 volts).

The PCM commands 1st gear and the gear ratio indicates 4th gear (0.65:1 to 0.75:1) for 1 second.

The PCM commands 2nd gear and the gear ratio indicates 3rd gear (0.95:1 to 1.05:1) for 1 second.

The PCM commands 3rd gear and the gear ratio indicates 2nd gear (1.52:1 to 1.62:1) for 1 second.

The PCM commands 4th gear and the gear ratio indicates 1st gear (2:871 to 2.97:1) for 1 second.

The PCM commands the solenoid ON and the voltage feedback remains high (B+).

The PCM commands the solenoid OFF and the voltage feedback remains low (0 volts).

The TFP manual valve position switch indicates an invalid switch combination for 60 seconds.

1. No VSS DTC P0502 or P0503.
2. The vehicle speed is less than 5 km/h (3 mph).
3. TFP manual valve position switch indicates REVERSE, D2 or D4 for 7 seconds at engine start up without indicating PARK or NEUTRAL.
4. The engine speed transitions from less than 50 RPM to greater than 700 RPM indicating start up.

Condition 3

1. No TP sensor DTC P0121, P0122 or P0123.
2. No VSS DTC P0502 or P0503.
3. No AT ISS sensor DTC P0716 or P0717.
4. No 1-2 SS valve DTC P0751, P0752 or P0753.
5. No 2-3 SS valve DTC P0756, P0757 or P0758.
6. The TP angle is greater than 9%.
7. The engine speed is greater than 500 RPM for 5 seconds and not in fuel shut off.
8. The vehicle speed is more than 8 km/h (5 mph).
9. The engine torque is greater than 70 N.m (50 lb ft) and one of the following conditions occurs: The gear ratio indicates REVERSE, D4, D3, D2 or D1 and the TFP manual valve position switch indicates PARK or NEUTRAL for 5 seconds. The gear ratio indicates D4, D3, D2 or D1 and the TFP manual valve position switch indicates REVERSE for 5 seconds. The gear ratio indicates REVERSE and the TFP manual valve position switch indicates D4, D3, D2 or D1 for 5 seconds.