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 MANUALSHONDA1993ACCORD L4-2156CC 2.2L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMCRANKSHAFT POSITION SENSORDESCRIPTION AND OPERATION
1993 Honda Accord L4-2156cc 2.2L SOHC
Crankshaft Position Sensor: Description and Operation
1993 Honda Accord L4-2156cc 2.2L SOHCSECTION Description and Operation
TDC/CKP/CYL Sensor Operation:
PURPOSE
To determine ignition timing at start-up, position of #1 cylinder for sequential fuel injection, and normal timing for fuel injection and ignition of each cylinder and also detects engine RPM.
LOCATION
The TDC/CKP/CYP sensor is mounted inside the distributor. The unit is made up of three separate sensors
CONSTRUCTION
All three sensors are pickup coil and reluctor construction.
OPERATION
The ECM uses this signals to determine fuel injector and ignition timing and to calculate engine RPM.
The TDC sensor signal is used to determine ignition timing at engine start-up. This signal is also used as a backup signal in the event the CYP sensor signal becomes abnormal.
The CYP sensor generates a signal based on the position of the number #1 cylinder for proper timing of the sequential fuel injection system for all cylinders. The CKP sensor determines timing for fuel injection and ignition timing of each cylinder and detects engine speed.
RENDER: 1.0x
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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.