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 Description
PCM will not allow cruise control operation under certain conditions, such as when vehicle speed is too low. This is done by the PCM grounding the 12 volt cruise inhibit switch sent by the cruise control module. If PCM is allowing cruise operation and the operator is requesting for cruise control, the cruise control module will send a cruise engaged signal to the PCM.
This test is used to compare the cruise inhibit output versus the cruise engaged input. DTC will set when the PCM sees that the cruise control module is signaling that it is engaged by sending 12 volts to the cruise engaged circuit while the PCM is inhibiting cruise operation on the cruise inhibit output circuit.
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.