For 1990-2009 cars

Diagnostic Category | Diagnostic Information
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The following table consists of nine 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 diagnostics information.

#### Fluid Diagnosis

This category contains the following topics:

• | Fluid condition - appearance, contaminants, smell, overheating

• | Line pressure - high or low

• | Fluid leaks

• | Refer to Transmission Fluid Check .

• | Refer to Line Pressure Check .

• | Refer to Fluid Leak Diagnosis .

• | Refer to Fluid Leak Diagnosis .

• | Refer to Transmission Overheats .

• | Refer to Automatic Transmission Fluid Leaks .

#### Noise and Vibration Diagnosis

This category contains the following topics:

• | Noise - drive gear, final drive, whine, growl, hum, rattle, knock, clunk

• | Vibration

• | Refer to Road Test .

• | Refer to Vibration at Idle .

• | Refer to Vibration While Driving .

• | Refer to Hum or Rattle Noise at Idle .

• | Refer to Whine/Growl Noise That Changes with Vehicle Speed .

#### Range Performance Diagnosis

This category contains the following topics:

• | No Park

• | No Reverse or slips

• | No Drive or slips

• | No engine braking

• | Range selector displays incorrect range

• | Refer to Range Selector Displays Incorrect Range .

• | Refer to Stall Speed Test .

• | Refer to Engagement Delay Test .

• | Refer to No Forward and Reverse .

• | Refer to Slips in Drive or No Drive .

• | Refer to Slips in Reverse or No Reverse .

• | Refer to Engine Stalls During Reverse or Drive Engagement .

• | Refer to Slips on Acceleration .

• | Refer to Harsh Feel at Light Acceleration or Deceleration Without Causing an Upshift or Downshift .

• | Refer to No Engine Braking in Fourth Gear .

• | Refer to No Engine Braking in Third Gear .

• | Refer to No Engine Braking in Second Gear .

• | Refer to No Response to Movement of Shift Lever .

• | Refer to Transmission Attempts to Move but Appears Locked Up .

#### Shift Quality Feel Diagnosis

This category contains the following topics:

• | Harsh shifts

• | Soft shifts

• | Harsh engagement

• | Delayed engagement

• | Refer to Harsh Park or Neutral to Drive Engagement .

• | Refer to Harsh Park or Neutral to Reverse Engagement .

• | Refer to Harsh Upshift .

• | Refer to Harsh Shift on Coastdown .

• | Refer to Harsh Forced Downshift .

#### Shift Pattern

This category contains the following topics:

• | No upshift

• | No downshift

• | Refer to No 1-2 Upshift .

• | Refer to No 2-3 Upshift .

• | Refer to No 3-4 Upshift .

• | Refer to No 4-5 Upshift .

• | Refer to No 5-4 Downshift .

• | Refer to No 4-3 Downshift .

• | Refer to No 3-2 Downshift .

• | Refer to No 2-1 Downshift .

#### Shift Speed Diagnosis

This category consists of the following topic:

Inaccurate or inconsistent shift points

• | Refer to Engagement Time From Park or Neutral to Drive is Not Within Specifications .

• | Refer to Engagement Time From Park or Neutral to Reverse is Not Within Specifications .

#### Torque Converter Diagnosis

This category contains the following topics:

• | Torque converter diagnosis

• | TCC does not apply

• | TCC does not release

• | TCC apply/release quality

• | Refer to Torque Converter Diagnosis .

• | Refer to Flex Plate/Torque Converter Vibration Test .

• | Refer to Torque Converter Clutch Stuck On or Off .

#### Symptom Can Not Be Duplicated or Symptom Not Found

This category contains the following topics:

• | Transmission fluid diagnosis

• | Line pressure diagnosis

• | Road testing

• | Refer to Transmission Fluid Check .

• | Refer to Line Pressure Check .

• | Refer to Road Test .