ENGINE FLARES UP OR SLIPS WHEN ACCELERATING VEHICLE [FW6A-EL]
id050315101800
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TROUBLESHOOTING ITEM |
Engine flares up or slips when accelerating vehicle |
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DESCRIPTION
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• Engine flares up when accelerator pedal is depressed for upshifting.
• Engine flares up suddenly when accelerator pedal is depressed for downshifting.
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POSSIBLE CAUSE
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1. Signal malfunction
2. Poor GND
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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 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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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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3
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INSPECT TCM FOR POOR GND
• Switch the ignition to off.
• Disconnect the TCM connector.
• Visually inspect for pin deformity, open circuit, or wiring harness non-insulation between TCM terminal 1B and body GND.
• 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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