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 Step 15 - Sensor Ground Circuit Test
- Turn the ignition off.
- Using a test lamp connected to 12 volts, check the sensor ground circuit in the CKP sensor harness connector.
The test lamp should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
Is the test lamp brightly illuminated?
Yes
- Go to Test Step TEST STEP 16 - CKP SIGNAL .
No
- Repair the ground circuit.
- Perform the PCM Verification Test. Refer to PCM VERIFICATION TEST .
A battery disconnect must be performed to clear the cam crank synchronization events.
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:
- • 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.