Description of defect

In the control computer of the prime mover (engine ECU), some air volume control programmes are inappropriate, so when power steering is operated during idling, etc., a load may be placed on the prime mover, causing it to temporarily slow down, and in the worst case, the prime mover may stop.

Improvement details

Change the engine ECU programme to the countermeasure.

Chassis number of target vehicles

Diamante

F31A-0400005～F31A-0405875
F41A-0400005～F41A-0400941

Automotive maintenance cannot determine the cause based on symptoms alone.
Be sure to perform diagnosis and inspection before determining the cause of the failure.