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.
Diagnosis And Testing - Inverter Module
For complete circuit diagrams, refer to the appropriate wiring information.
Disable the airbag system before attempting any steering wheel, steering column, seat belt tensioner, side airbag or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable. Wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to follow these instructions may result in accidental airbag deployment and possible serious or fatal injury.
| CONDITION | POSSIBLE CAUSES | CORRECTION |
|---|---|---|
| NO POWER AT THE 110 VOLT POWER OUTLET | 1. Fuse inoperative. | 1. Check Totally Integrated Power Module (TIPM) fuse number 37. Replace fuse, if required. |
| 2. Power outlet connector damaged. | 2. Check for loose or corroded power outlet connector. Repair, if required. | |
| 3. Inverter module connector damaged. | 3. Check for loose or corroded inverter module connector. Repair, if required. | |
| 4. Wiring damaged. | 4. Check for shorted or open wires. Repair wiring, if required. | |
| 5. Inverter module ground damaged. | 5. Check for continuity between the inverter module and a known good ground. There should be continuity. Repair ground, if required. | |
| 6. Power outlet inoperative. | 6. Replace the power outlet. | |
| 7. Inverter module inoperative. | 7. Replace the inverter module. |
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.