No Converter Clutch Apply
Checks
| Cause
|
Verify Proper PCM Operation and Vehicle Wiring
| Improper operation or wiring
|
Wiring
Harness
|
| • | Damaged or loose connector |
| • | Inoperative TCC Solenoid valve |
|
Control Valve Assembly
|
| • | Stuck converter clutch valve |
| • | Stuck converter clutch regulator valve |
|
TCC Solenoid Valve
| Leaking solenoid O-ring
|
Solenoid Screen
| Blocked screen
|
Torque Converter
| Inspect the converter (refer to the section
on Transmission Unit Repair)
|
Turbine Shaft
| Damaged seals
|
Oil Pump Drive Shaft
| Damaged seal
|
Channel Plate
| Damaged or unseated
blow off checkball for the converter clutch
|
TCC Solenoid Valve for OFF Failure
|
| • | Foreign material and plugging in the filter |
| • | No supply voltage to the TCC solenoid valve |
| • | Improperly molded solenoid housing, which causes the solenoid
to separate from the control valve assembly |
|
TCC Solenoid Valve for ON Failure
|
|
Brake Switch (No TCC Apply)
|
| • | Corroded switch contact |
|
PRNDL Circuit Problem
|
| • | Corroded switch contact |
| • | PRNDL connector wires A and B are switched around, if PRNDL indicates
anything but D3 or D4 |
|
Coolant Temperature Sensor
|
|
