Engine Controls - High Engine RPM on Deceleration

07-041

July 10, 2007

Applies To:
2006 Civic Hybrid - ALL

Occasional High Engine RPM During Deceleration

SYMPTOM

When decelerating from highway speeds while driving straight ahead, the engine speed occasionally stays high (around 4,000 rpm).

PROBABLE CAUSE

The 2006 Civic Hybrid is equipped with corner G control system. While decelerating through a corner, this system changes the transmission pulley ratios to obtain the best engine speed. But, if there is even a minor difference in size between the rear tires, the PCM may "think" the vehicle is cornering when it's not. This causes a higher than normal engine speed during deceleration while driving straight.

NOTE:
Same-sized tires from different manufacturers can vary in rolling circumference.

CORRECTIVE ACTION

Update the PCM CVT software with the HDS. The update gives the PCM more tolerance to small size variations between the rear tires.

WARRANTY CLAIM INFORMATION

In warranty: The normal warranty applies.

Operation Number: 1255A2

Flat Rate Time: 0.3 hour

Failed Part: P/N 37820-RMX-A58
H/C 8501405

Defect Code: 03214

Symptom Code: 09112

Template ID: 07-041A

Skill Level: Repair Technician

Out of warranty:
Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Parts and Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work.





SOFTWARE INFORMATION

REPAIR PROCEDURE

Update the PCM CVT software with the HDS and software version 2.010.003 or later. Refer to Service Bulletin 01-023, Updateing Control Unit/Modules.





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