For 1990-2009 cars

#### Symptom Diagnosis

Diagnostic Category | Diagnostic Information
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DEFINITION: This table consists of 9 diagnostic categories that are located in the left 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 column to locate the specific symptom diagnostic 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 Oil Pressure High or Low.

• | Refer to Fluid Leak Diagnosis.

• | Refer to Oil Out the Vent.

#### Noise and Vibration Diagnosis

This category contains the following topics:

• | Ratcheting noise

• | Noise: drive gear, final drive, whine, growl, rattle, buzz, popping

• | Vibration

• | Refer to Ratcheting Noise.

• | Refer to Ticking Noise in Reverse.

• | Refer to Vibration in Reverse and Whining Noise in Park.

• | Refer to Popping Noise.

• | Refer to Whine Noise Varying with RPM or Fluid Pressure.

• | Refer to Buzz Noise or High Frequency Rattle Sound.

• | Refer to Noise in Random Ranges.

#### Range Performance Diagnosis

This category contains the following topics:

• | Drives in Neutral

• | No Park

• | No Reverse

• | No Drive

• | No engine braking

• | Shift selector indicator does not match transmission gear range

• | Lack of power or hesitation

• | Refer to Drives in Neutral.

• | Refer to No Park.

• | Refer to No Reverse or Slips in Reverse.

• | Refer to No Drive in All Ranges.

• | Refer to No Drive in Drive Range.

• | Refer to No Overrun Braking - Manual 3-2-1.

• | Refer to Range Selector Displays Incorrect Range.

#### Shift Quality (Feel) Diagnosis

This category contains the following topic:

• | Harsh, soft or slipping shifts

• | Harsh, soft or delayed engagement

• | Shift shudder, flare or tie-up

• | Refer to Harsh Shifts.

• | Refer to Slipping or Harsh 1-2 Shift.

• | Refer to No 2-3 Shift or 2-3 Shift Slips, Rough or Hunting.

• | Refer to No 3-4 Shift, Slips or Rough 3-4 Shift.

• | Refer to Harsh Garage Shift.

• | Refer to Delay in Drive and Reverse.

#### Shift Pattern

This category contains the following topics:

• | One forward gear only

• | Two forward gears only

• | Gear missing or slipping

• | No upshift or slipping upshift

• | No downshifts

• | Non-First gear start

• | Refer to First Gear Range Only - No Upshift.

• | Refer to Third Gear Only.

• | Refer to Second/Third Gear Only or First/Fourth Gears Only.

• | Refer to Slips in First Gear.

• | Refer to Slipping or Harsh 1-2 Shift.

• | Refer to No 2-3 Shift or 2-3 Shift Slips, Rough or Hunting.

• | Refer to No 3-4 Shift, Slips or Rough 3-4 Shift.

• | Refer to No Part Throttle or Delayed Downshifts.

• | Refer to Second Gear Start.

#### Shift Speed Diagnosis

This category contains the following topic:

Inaccurate or inconsistent shift points

Refer to Inaccurate Shift Points.

#### 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 No Torque Converter Clutch Apply.

• | Refer to No Torque Converter Clutch Release.

• | Refer to Torque Converter Clutch Shudder.

#### Indicator On or Message Center Displays Message

This category contains the following topics:

Message Center displays "change trans fluid"

Refer to Transmission Component and System Description.

If symptom is not found |

• | Refer to Transmission Fluid Check.

• | Refer to Road Test.

• | Refer to Line Pressure Check.