The A/C cutout relay is being discussed. Technician A says the PCM keeps the compressor engagement circuit open when the engine is operated at WOT. Technician B says the compressor cutout relay closes immediately after the engine starts. Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because the Powertrain Control Module (PCM) does indeed keep the air conditioning compressor engagement circuit open when the engine is operated at Wide Open Throttle (WOT) to ensure maximum power is available for acceleration, by temporarily disabling accessories like the air conditioning compressor that draw power from the engine. Technician B is incorrect because the compressor cutout relay does not necessarily close immediately after the engine starts; its operation depends on various conditions such as engine temperature, cabin temperature demands, and other factors.

The A/C Cutout Relay Is Being Discussed