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.
Mechanical Instrument Cluster
Body control module sends the angular position of 4 gauges, the status of 7 indicator lights, the status and dimming of PRNDL indicator, the dimming of cruise and low fuel warning lights, and odometer stepper motor information to the mechanical instrument cluster over the CCD bus when the ignition switch is in OFF (unlock), RUN and START positions.
All mechanical instrument cluster features operate when ignition switch is in the RUN position. The PRNDL feature operates when ignition switch is in the OFF, RUN or START position.
On the transition from OFF to RUN position, a bulb check is performed. This bulb check consists of activating all CCD controlled indicator lights and all PRNDL segments for approximately 2-4 seconds. PRNDL bulb check is aborted if gear selector is moved out of Park position and if tachometer exceeds 450 RPM.
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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.