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Home >> Nissan-Datsun >> 2000 >> Sentra XE L4-1.8L (QG18DE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Testing and Inspection >> Preparation
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Preparation

PREPARATION
1. PCM is located in the right side of the cowl top (behind the strut tower).
For this inspection:




- Remove engine control harness bracket on the strut tower.




- Remove quick connector on the ventilation hose.




- Remove PCM fixing bolts and pull PCM out all the way.




- Remove PCM cover fixing bolts.
- Remove PCM fixing bolts.
- Remove PCM with the harness from the cover.




2. Remove PCM harness protector.




3. Perform all voltage measurements with the connector connected. Extend tester probe as shown to perform tests easily.
- Open harness securing clip to make testing easier.
- Use extreme care not to touch 2 pins at one time.
- Data is for comparison and may not be exact.

CAUTION: Do not use PCM ground terminals when measuring input/output voltage. Doing so may result in damage to the PCM's transistor. Use a ground other than PCM terminals, such as the ground.

PCM Harness Connector Terminal Layout:




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