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 MANUALSFORD1994RANGER 2WD L4-140 2.3L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONPINPOINT TESTSDR - CYLINDER IDENTIFICATION (CID) SENSORDR - TESTING NOTES
1994 Ford Ranger 2WD L4-140 2.3L SOHC
DR - Testing Notes
1994 Ford Ranger 2WD L4-140 2.3L SOHCSECTION DR - Testing Notes
DESCRIPTION
The Powertrain Control Module (PCM) uses the Cylinder Identification (CID) signal information for fuel injector synchronization. The CID signal is generated by a dual hall-type Crankshaft Position (CKP) sensor with a 50% duty cycle and an amplitude that varies from 0.4 volts to B(+).
NOTE
You should enter this Pinpoint Test only when you have been directed here from Diagnostic Routines.
REMEMBER
This Pinpoint Test is intended to diagnose only the following:
- Harness circuits: CID(+), CID(-), CID, SIG RTN, VPWR
- Crankshaft position sensor
- PCM
The Powertrain Control Module (PCM) uses the Cylinder Identification (CID) signal information for fuel injector synchronization. The CID signal is generated by a dual hall-type Crankshaft Position (CKP) sensor with a 50% duty cycle and an amplitude that varies from 0.4 volts to B(+).
NOTE
You should enter this Pinpoint Test only when you have been directed here from Diagnostic Routines.
REMEMBER
This Pinpoint Test is intended to diagnose only the following:
- Harness circuits: CID(+), CID(-), CID, SIG RTN, VPWR
- Crankshaft position sensor
- PCM
RENDER: 1.0x
NO RELATED
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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.