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.
Circuit/System Testing
When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected.
- Passenger presence module
- Passenger presence module wiring harness
- Ignition OFF, disconnect the harness connectors at the passenger presence module.
- Ignition OFF, scan tool disconnected, open and close the driver door and wait 1 minute. Test for less than 5 ohms between the ground circuit terminal 3 and ground.
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Ignition OFF, verify that a test lamp illuminates between the ignition circuit terminal 2 and ground.
- If test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
- If all circuits test normal, reconnect harness and confirm that DTCs are history, if history clear DTCs.
- If DTC is still current, replace the passenger presence module.
Some control module ground circuits may require up to 20 minutes after the ignition is turned off before achieving a resistance reading of less than 5 ohms. In most cases the readings will drop below 20 ohms within 1 minute indicating the control module is going to sleep.
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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.