Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Powertrain Control Module (Pcm)
| Refer to COMPONENT INDEX . |
PCM Cranking Management: Automatic Cranking - The term automatic cranking is referred to as every engine cranking that is not driven by an action on the ignition cycle that follows an Electric Stop/Start autostop of the engine. When an engine cranking event has been decided by the PCM, the following PCM managed sequential procedure occurs:
The PCM communicates information to the HPC for engine RPM and contains the software to:
- Coordinate the BSG for added AutoStop/AutoStart management
- Security and OBD Diagnostics
- The PCM will disengage the Air Conditioning (A/C) compressor clutch for a calibrated period of time following an Electric Stop/Start autostart event.
- The PCM acquires the brake booster differential depression information from the ABS module.
- The PCM receives the brake pedal status and generates a brake position variable based on the inputs. The variables are:
Brake Pedal Status - Input signal to the PCM: PCM Variable generated - Brake Pedal Position: Pedal Released HIGH Pedal Pressed LOW Not Active ERROR
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.