EXCESSIVE SHIFT SHOCK IS FELT WHEN UPSHIFTING AND DOWNSHIFTING [GW6A-EL]
id050318102100
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TROUBLESHOOTING ITEM |
Excessive shift shock is felt when upshifting and downshifting |
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DESCRIPTION
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• Excessive shift shock is felt when depressing accelerator pedal to accelerate at upshifting.
• During cruising, excessive shift shock is felt when depressing accelerator pedal at downshifting.
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POSSIBLE CAUSE
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1. Insufficient TCM learning
2. Signal malfunction
3. Poor installation or worn of engine mount, suspension
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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VERIFY MALFUNCTION SYMPTOM
• Is the malfunction symptom (shift shock/shifting time) at the same level compared to a vehicle of the same model?
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Yes
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Symptom troubleshooting is completed.
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No
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Go to the next step.
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2
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PERFORM INITIAL LEARNING
• Perform the initial learning.
(See INITIAL LEARNING [GW6A-EL].)
• Does the symptom disappear?
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Yes
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Symptom troubleshooting is completed.
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No
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Go to the next step.
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3
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PERFORM ON-BOARD DIAGNOSTIC TO VERIFY HYDRAULIC PRESSURE SWITCH OPERATION PRESSURE
• Is the operation pressure normal?
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Yes
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Go to the next step.
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No
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Replace the control valve body.
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4
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INSPECT SIGNAL PARTS FOR MALFUNCTION
• Inspect the value at the following PCM PID using the M-MDS.
• Is there any malfunction?
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Yes
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Repair or replace any malfunctioning parts according to the inspection result.
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No
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Go to the next step.
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5
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INSPECT ENGINE MOUNT/SUSPENSION FOR POOR TIGHTENING
• Is there any malfunction?
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Yes
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Repair or replace any malfunctioning parts according to the inspection result.
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No
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Symptom troubleshooting is completed.
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