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.
Central Timer Module (CTM)
Central Timer Module (CTM) is processor for Vehicle Theft Security System (VTSS). CTM uses the data bus network to allow sharing and reporting of sensor information. If a door ajar sensor is opened while VTSS is set, a signal is sent to flash headlights and sound horn. PCM is also notified through bus network to enable engine no-run feature. CTM has Remote Keyless Entry (RKE) receiver and control logic incorporated.
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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.