Diagnostic Procedures

Check Vehicle Operation -  Check for:

• Water, ice, mud and snow causing wheel slippage.
• Excessive engine RPM in N (Neutral).
• Driven at high rate of speed.

If vehicle was operating in any of these conditions, vehicle is okay. Clear DTC and return vehicle to customer with information about P1270. If vehicle was not operating in any of these conditions, clear DTC and refer to SYMPTOM DIAGNOSIS in TROUBLE SHOOTING - NO CODES article to address any driveability problems.