Technician A says the Powertrain Control Module (PCM) manages engine torque by retarding engine ignition timing prior to transmission shifts. Technician B says limp-in mode refers to the vehicle still functioning in the event of a failure of the transmission computer or part of the PCM that controls the transmission. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because the PCM can manage engine torque by adjusting ignition timing during shifts. Technician B is correct because limp-in mode allows a vehicle to operate at reduced capacity if there's a failure in the transmission control system.

Technician a Says the Powertrain Control Module (PCM) Manages Engine