Diagnostic Category
| Diagnostic Information
|
|
Important: The Functional Test Procedure should be performed before beginning any
diagnosis. If this procedure has not already been performed, refer to
Functional Test
.
The following table consists of seven diagnostic categories that are
located in the left-hand column. Using this column, choose the appropriate
category based on the operating conditions of the vehicle or transmission.
After selecting a category, use the right-hand column to locate the
specific symptom diagnostic information.
|
Fluid DiagnosisThis category contains the following topics:
| • | Fluid condition (appearance, contaminants, smell, overheating) |
| • | Line pressure (high or low) |
|
| • | Refer to Fluid Foaming
. |
| • | Refer to High or Low Line Pressure
. |
|
Noise and Vibration DiagnosisThis category contains the following topics:
| • | Noise (drive gear, final drive, whine, growl, rattle, buzz, popping) |
|
| • | Refer to Ratcheting Noise
. |
|
Range Performance DiagnosisThis category contains the following topics:
| • | Shift indicator indicating wrong gear |
|
| • | Refer to Drives in Neutral
. |
| • | Refer to No Reverse or Slips in Reverse
. |
| • | Refer to Loss of Drive
. |
| • | Refer to Loss of Power
. |
| • | Refer to Engine Stall
. |
| • | Refer to No Engine Braking; All Manual Ranges
. |
| • | Refer to No Engine Braking; Manual First - First Gear
. |
| • | Refer to No Engine Braking; Manual Second - Second Gear
. |
| • | Refer to Shift Indicator Indicates Wrong Gear Selection
. |
| • | Refer to No Gear Selection
. |
|
Shift Quality (Feel) DiagnosisThis category contains the following topic:
Harsh shifts
| Refer to Harsh Shifts
.
|
Shift PatternThis category contains the following topics:
| • | One forward gear only |
| • | Specific forward gears only |
|
| • | Refer to Second Gear Only
. |
| • | Refer to First and Second Gears Only
. |
| • | Refer to First and Fourth Gears Only
. |
| • | Refer to Second and Third Gears Only
. |
| • | Refer to Third and Fourth Gears Only
. |
| • | Refer to No First Gear, Slips in First Gear
. |
| • | Refer to No Second Gear, Slips in Second Gear
. |
| • | Refer to No Third Gear, Slips in Third Gear
. |
| • | Refer to No Fourth Gear, or Slips in Fourth Gear
. |
|
Shift Speed DiagnosisThis category contains the following topic:
Inaccurate or inconsistent shift points
| Refer to Inaccurate/Inconsistent Shift Points
.
|
Torque Converter DiagnosisThis category contains the following topics:
| • | Torque Converter Diagnosis |
| • | TCC application while engine is cold |
|
| • | Refer to No Torque Converter Clutch (TCC) Release
. |
| • | Refer to Torque Converter Clutch (TCC) Apply with Cold Engine
. |
| • | Refer to Engine Stall
. |
|
