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.
1997 Acura SLXFACTORY OEM SERVICE PROCEDURE
Knock Sensor (KS) Circuit
- Knock sensor is mounted in engine block near cylinders. KS produces an AC output voltage which increases with severity of knock. KS sends a signal voltage to PCM. PCM will retard EST based on signal from KS to PCM. An open or short circuit on ESC wire to PCM will cause a loss of 12-volt ESC controller signal. This will cause PCM to fully retard ignition timing.
- Disconnect connector at KS. Connect DVOM to ground, measure resistance at KS. Resistance should be 90,000-110,000 ohms. If resistance is not within specifications, If repair was not needed, replace KS. If resistance is within specifications, check KS circuit. See appropriate KNOCK SENSOR CIRCUIT DTC under SELF-DIAGNOSTICS.
Factory Service Tools
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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.
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