[TSB 09-041] TSX Engine Pings During Moderate to Heavy Acceleration

TSB 09-041

Apples To:
2009 TSX – ALL
2010 TSX L4 – From VIN JH4CU2...AC000001 thru JH4CU2...AC009053



SYMPTOM:
The engine pings during moderate to heavy acceleration.

PROBABLE CAUSE:
The PCM software, combined with knock sensor sensitivity, may not adjust the ignition timing as expected.

NOTE: This condition does not cause internal engine damage. Some engine ping is a desired characteristic for optimal performance and fuel economy.

CORRECTIVE ACTION:
Replace the knock sensor, then update the PGM-FI software with the HDS. If you’re working on a vehicle with A/T, also update the A/T software.

NOTE: On vehicles with A/T, you must update the A/T software to complete the repair.

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