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.
Camshaft Position Sensor 2, Checking
Observe all safety precautions: SAFETY PRECAUTIONS
View clean working conditions: CLEAN WORKING CONDITIONS
Use only gold-plated terminals when servicing any component with gold-plated electrical harness connector terminals.
For wiring diagrams, component locations, and connector views, Refer to the applicable wiring diagram.
Special tools and workshop equipment required
- Multimeter
- Wiring diagram
Test requirements
- The Motronic Engine Control Module (ECM) - J220- fuses OK.
- Battery voltage at least 12.5 volts.
- All electrical consumers such as, lights and rear window defroster, switched off.
- Vehicles with automatic transmission, shift selector lever into position "P" or "N".
- A/C switched off.
- Ground (GND) connections between engine/transmission/ chassis OK.
- Ignition switched off.
Test procedure
- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
Start diagnosis
- Remove the engine cover with air filter. Refer to appropriate service information.
- Disconnect the Camshaft Position (CMP) Sensor 2 -G163- electrical harness connector -1-.
- Switch the ignition on.
- Using a multimeter, Check the Camshaft Position (CMP) Sensor 2 -G163- electrical harness connector terminals 1 to 3 for voltage.
Specified value: about 5.0 V
- Switch the ignition off.
If the specification was not obtained:
Checking wiring
If the manufacturers test box is being used, perform the following step.
- Install the test box.
If the manufacturers test box is not being used, perform the following step.
- Remove the Motronic Engine Control Module (ECM) -J220-. Refer to appropriate service information.
- Using a multimeter, Check the Camshaft Position (CMP) Sensor 2 -G163- electrical harness connector to the Motronic Engine Control Module (ECM) electrical harness connector T121 for an open circuit.
| Camshaft Position (CMP) Sensor 2 -G163- electrical harness connector terminals | Motronic Engine Control Module (ECM) electrical harness connector T121 terminals or test box sockets |
| 1 | 98 |
| 2 | 87 |
| 3 | 108 |
Specified value: 1.5 U Max.
If the specified value was not obtained:
- Check the wiring for a short circuit to Battery (+), or an open circuit.
- Check the wiring connection for damage, corrosion, loose or broken terminals.
- If necessary, repair the faulty wiring connection.
If no malfunction is found in the wiring and voltage supply was OK:
- Replace the Camshaft Position (CMP) Sensor 2 -G163-. Refer to appropriate service information.
If no malfunction is found in the wiring and voltage supply was not OK:
- Replace the Motronic Engine Control Module (ECM) -J220-. Refer to appropriate service information.
- Install the engine cover with air filter. Refer to appropriate service information.
Final procedures
After the repair work, the following work steps must be performed in the following sequence:
1 - Check the DTC memory DIAGNOSTIC MODE 03 - READ DTC MEMORY
2 - If necessary, erase the DTC memory DIAGNOSTIC MODE 04 - ERASE DTC MEMORY
3 - If the DTC memory was erased, generate readiness code READINESS CODE
NO RELATED
Use the Manual With the Right Hardware
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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.