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Home >> Nissan-Datsun >> 1993 >> Sentra SE-R, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Ignition Checks >> Distributor Ignition >> Crankshaft Position (CKP) Sensor
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Crankshaft Position (CKP) Sensor

  1. CKP sensor is located inside distributor. If a fault is present in CKP sensor, Code 11 may be set in ECM memory. If Code 11 is set, perform appropriate CODE 11 (CKP SENSOR) in TESTS W/CODES article.
  2. To test CKP sensor, remove distributor. Leave wiring harness connected. Using a voltmeter, connect negative lead to ground and alternately connect positive lead to 1-degree signal terminal and 120/180-degree signal terminal. See CKP SENSOR INPUT SIGNAL TERMINALS table. See Fig 1-Fig 3 .
  3. Measure voltages at both terminals while rotating distributor by hand. Voltage should fluctuate 0-5 volts. If either voltage signal does not fluctuate 0-5 volts, check harness for short or open circuit. If no problems are found, replace CKP sensor.
CKP SENSOR INPUT SIGNAL TERMINALS

Application 1-Degree Signal 120/180-Degree Signal
Altima & 240SX Terminal No. 2 Terminal No. 1
Maxima & Quest Terminal No. 4 Terminal No. 3
NX & Sentra
1.6L Terminal No. 2 Terminal No. 1
2.0L Terminal "D" Terminal "A"
Pickup & Pathfinder
2.4L Terminal "D" Terminal "A"
3.0L Terminal No. 4 Terminal No. 3
Fig 1: Distributor Wiring Harness Connector Terminal ID (Altima, NX 1.6L, Sentra 1.6L & 240SX)
G93B79153Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 2: Distributor Wiring Harness Connector Terminal ID (Maxima, Pathfinder, Pickup 3.0L & Quest)
G93C79154Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 3: Distributor Wiring Harness Connector Terminal ID (NX 2.0L, Pickup 2.4L & Sentra 2.0L)
G93D79155Courtesy of NISSAN MOTOR CO., U.S.A.
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