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Home >> Chevrolet >> 2006 >> Epica LT >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 2.5L (LBK) - DTC P0506 To DTC P2110 >> DTC P1321 >> Component Testing

Component Testing

  1. Ignition OFF, disconnect the harness connector of the CKP sensor.
    2. IMPORTANT: If the CKP sensor lead is damaged in any way, replace the CKP sensor.
  2. Connect a DMM between the signal circuit and the low reference circuit of the CKP sensor.
  3. Test for 460-620 ohms between the signal circuit and low reference circuit.
    • If the resistance is not within the specified range, replace the CKP sensor.
  4. Disconnect the fuel pump relay.
  5. Set the DMM to the AC voltage scale.
  6. While cranking the engine, test for more than 1.4 ACV between the signal circuit and low reference circuit of the CKP sensor.
    • If less than 1.4 ACV, replace the CKP sensor.
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