Field Case Trouble Elantra/Engine Hard Starting

model: Elantra (XD) 2004
Displacement: 1600 cc
Fuel: Gasoline
Subject : ENGINE HARD STARTING – CKPS OR WIRING

1) CONDITION :

1. Intermittently hard engine starting.

2) Cause

1. Poor contact of wiring connector.
2. The location of wiring bracket is abnormal.

3) Diagnosis

1. Monitor scan tool data.( P 0336 CKPS Circuit out range.)
2. The location of CKPS bracket is normal.
   But if the wiring is too tightened, the poor contact is occurred due to the engine vibration.
3. Inspection of CKPS signal using scan tool.

4) Repair Guide

1. Connect scan tool to DLC(data link connector)
2. Warm up the engine to normal operating temperature.
3. Monitor the “CKPS signal” using parameter on the scan tool.
4. If the current data of CKPS is off is Abnormal.
5. The problem is caused intermittently by poor contact in the sensor and or ECM’s connector or was repaired and ECM memory was not cleared.
6. Thoroughly check connector for looseness,poor connection ,bending corrosion,contamination ,deterioration or damage.
7. Repair or replace as necessary and then go to “Verification of vehicle repair”procedure.

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