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.
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HOMESERVICE MANUALSSUZUKI1998ESTEEM GLX SEDAN PLUS L4-1.6LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCRANKSHAFT POSITION SENSORDESCRIPTION AND OPERATION
1998 Suzuki Esteem GLX Sedan Plus L4-1.6L
Crankshaft Position Sensor: Description and Operation
1998 Suzuki Esteem GLX Sedan Plus L4-1.6LSECTION Description and Operation
Crankshaft Position Sensor (CKP Sensor)
The sensor consists of magnet and coil. It is mounted on oil pan with specified air gap between the sensor core end and crankshaft timing belt pulley tooth.
As the crankshaft turns, AC voltage (pulse) is generated in the sensor.
ECM uses this signal as;
- a data to calculate the engine speed
- one of the signals for cylinder identification
- one of the signals to monitor occurrence of a misfire
Engine Start Signal
This signal is sent from the engine starter circuit.
By receiving it, ECM judges whether the engine is cranking or not and uses it as one of the signals to control the fuel injector and fuel pump relay.
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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.