## Automatic Transmission

#### Symptom Troubleshooting Index (cont'd)

14-14

Symptom | Probable cause(s) | Notes
Transmission does not shift into position |

1. Shift cable broken or out of adjustment
2. Joint in shift cable and transmission or body worn
3. Parking mechanism defective

- Check for a loose shift cable on the shift lever and the transmission control shaft.
- Check the park pawl spring installation and the park lever spring installation. If installation is incorrect, install the spring correctly. Make sure that the park lever stop is not installed upside down. Check the distance between the park pawl shaft and park lever roller pin. If the distance is out of tolerance, adjust the distance with the park lever stop.

Stall speed high, but all clutch pressures are in specification | Torque converter check valve defective |

- Inspect the clutch assemblies for seizure and wear. If the clutch assembly is seized or excessively worn, repair it and inspect the CPC valve and A/T clutch pressure solenoid valves for free movement.
- If the ATF strainer is clogged with particles of steel or aluminium, inspect the ATF pump. If the ATF pump is OK and no cause for the contamination is found, replace the torque converter.

Lock-up clutch does not disengage |

1. Lock-up timing valve defective
2. Lock-up shift valve defective
3. Lock-up control valve defective
4. Lock-up clutch piston defective
5. Torque converter clutch solenoid valve defective
6. A/T clutch pressure control solenoid valve B defective
7. Countershaft speed sensor defective.
8. Restricted ATF cooler

- Check the indicator light indication and check for loose connectors. Inspect the A/T clutch pressure control solenoid valve filter/gasket for wear and damage. If the A/T clutch pressure control solenoid valve is stuck, inspect the CPC valve.
- Check the indicator light indication and check for loose connectors. Inspect the O-rings and check the torque converter clutch solenoid valve for seizure.
- Check the countershaft speed sensor installation.
- Check ATF cooling system for restriction.

No engine braking in position | 1st-hold clutch defective |

- Check 1st-hold clutch pressure.
- Inspect the clutch piston and O-rings. Check the spring retainer for wear and damage. Inspect the clutch end plate-to-top disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clearance with the clutch end plate.