Symptoms -- Automatic Transmission
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.
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Fluid DiagnosisThis category contains the following topics:
• | Fluid condition - appearance, contaminants, smell, overheating |
• | Line pressure - high or low |
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Noise and Vibration DiagnosisThis category contains the following topics:
• | Noise - drive gear, final drive, whine, growl, rattle, buzz, popping |
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Range Performance DiagnosisThis category contains the following topics:
• | Shift selector indicator does not match transmission gear range |
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Shift Quality Feel DiagnosisThis category contains the following topics:
• | Harsh, soft or slipping shifts |
• | Harsh, soft or delayed engagement |
• | Shift shudder, Flare or tie-up |
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Shift PatternThis category contains the following topics:
• | Gear missing or slipping |
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Shift Speed DiagnosisThis category consists of the following topic:
Inaccurate or inconsistent shift points
| Refer to
Inaccurate Shift Points
.
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Torque Converter DiagnosisThis category contains the following topics:
• | Torque converter diagnosis |
• | TCC apply/release quality |
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Indicator ON or Message Center Displays MessageThis category contains the following topics:
• | Change transmission fluid light ON |
• | Service transmission light ON |
• | Transmission hot idle engine light ON |
| Refer to
Transmission Indicators and Messages
.
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If Symptom Not Found
Transmission will not upshift or downshift using Driver Shift Control.
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