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.
Diagnostic Test
- CHECK IF THE DTC IS CURRENT
- Start the engine in park.
- Raise the drive wheels off of the ground.WARNING:
Properly support the vehicle.
- Firmly apply the brakes and place the transmission selector in drive.WARNING:
Be sure to keep hands and feet clear of rotating wheels.
- Release the brakes and allow the drive wheels to spin freely.NOTE:
The drive wheels must be turning at this point.
- With the scan tool, read the Output rpm
Is the Output rpm below 100?
Yes
- Go To 2
No
- Go To 8
- CHECK THE PCM AND WIRING USING THE TRANSMISSION SIMULATOR
- Turn the ignition off to the lock position.
- Remove the Starter Relay.CAUTION:
Removal of the Starter Relay will prevent the vehicle from being started in gear.
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.