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.
Test sequence
- Disconnect 3-pin connector -1- from Camshaft Position (CMP) sensor -2-.
- Connect multimeter to terminal 1 (B+) and 3 (Ground -GND-) of the respective connector for Camshaft Position (CMP) sensor for voltage measurement.
- Switch ignition on.
Specified value: at least 4.5 V
- Switch ignition off.
If there is no voltage:
- Connect test box to control module wiring harness, see CONNECT TEST BOX FOR WIRING TEST .
- Check for open circuits in wires between test box and connector according to wiring diagram.
Terminal 1+socket 98
Terminal 2+socket 86
Terminal 3 + socket 108
Wire resistance: max: 1.5 Ξ©
- Also check wires for short circuit to each other.
Specified value: INFINITY Ξ©
If no malfunctions are found in the wires and there was voltage between terminals 1 + 3:
- Replace Camshaft Position (CMP) sensor:
- Erase DTC memory of Engine Control Module (ECM), see DIAGNOSTIC MODE 4: RESET/ERASE DIAGNOSTIC DATA .
- Generate readiness code, see READINESS CODE, GENERATING .
If no malfunctions are found in wires and there was no voltage between terminals 1 + 3:
- Replace Engine Control Module (ECM), see REPLACING ENGINE CONTROL MODULE (ECM) .
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.