Technician A says that by monitoring the MAP values, the TCM can change the shift schedule of the vehicle. Technician B says the TP sensor voltage signal is sent to the PCM as an indication of engine temperature. Who is correct?
A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct. The TCM (Transmission Control Module) uses the MAP (Manifold Absolute Pressure) sensor values to determine the engine load and change the shift schedule accordingly.

Technician B is incorrect. The TP (Throttle Position) sensor voltage signal is not an indication of engine temperature, but rather an indication of the position of the throttle valve. The PCM (Powertrain Control Module) uses this signal to adjust the fuel delivery and ignition timing accordingly.

Technician a Says That by Monitoring the MAP Values, the TCM