Electronic Component Malfunctions
Component/System
| Can Effect
|
This table gives some
general information about electronic component malfunctions. Use this information
to become familiar with possible conditions caused by transmission/vehicle
electrical components. Refer to the Diagnosis Tables for more specific information.
|
Throttle Position (TP) Sensor
|
| • | Shift Pattern (erratic) |
| • | Shift quality (firm or soft) |
|
Automatic Transmission Output Shaft Speed (AT OSS)
Sensor
|
| • | Shift Pattern (erratic) |
| • | TCC solenoid valve apply (at wrong time) |
| • | Shift quality (harsh or soft) |
|
Transmission Fluid Pressure (TFP) Manual Valve Position
Switch
|
| • | TCC solenoid valve apply (no apply if diagnostic code is set) |
| • | Shift pattern (no fourth gear in hot mode) |
| • | Manual downshift (erratic) |
|
Automatic Transmission Fluid Temperature (TFT) Sensor
|
| • | TCC solenoid valve control (On or Off) |
| • | Shift quality (harsh or soft) |
|
Engine Coolant Temperature (ECT) Sensor
|
| • | TCC solenoid valve control (no apply) |
|
Shift Solenoid valves
| Gear application (wrong gear, only
two gears, no shift)
|
Brake Switch
|
| • | No 4th gear if in hot mode |
|
System Voltage
|
| • | Gear application (third gear only) |
| • | No 4th gear if in hot mode) |
|
3-2 Control Shift Solenoid Valve Assembly
|
| • | Gear application (third gear only) |
| • | 3-2 Downshifts (flare or tie-up) |
|
Pressure Control Solenoid
|
| • | Line pressure (high or low) |
| • | Shift quality (harsh or soft) |
|
TCC Sol Valve
|
| • | TCC solenoid valve apply (no apply) |
| • | No 4th gear if in hot mode |
|
Cruise Control
| Delays 3-4 upshift and TCC apply during heavy
throttle
|
Acceleration Slip Regulation (ASR)
| Downshifts
|
