Preparation

1. ECM 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 ECM fixing bolts and pull it out all the way.




- Remove ECM cover fixing bolts.
- Remove ECM fixing bolts.
- Remove ECM with it's harness from the cover.




2. Remove ECM 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 ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

ECM Harness Connector Terminal Layout: