Repair Procedures: Inspection

1. The engine control system can be more quickly diagnosed for problems by using the KDS (Refer to "2.5T (VIN F) ").
   1. Self diagnosis: Checking failure and Diagnosis Trouble Code (DTC)
   2. Data analysis: Checking the system input/output data state
   3. Actuation test: Checking the system operation condition
   4. Additional function: Controlling other features including system option setting and Zero-Adjustment

Inspection component 

1. Test ECM ground circuit: Measure resistance between ECM and chassis ground using the backside of ECM harness connector as ECM side check point. If the problem is found, repair it.

   Specification  : Below 1Ω

2. Test ECM connector: Disconnect the ECM connector and visually check the ground terminals on ECM side and harness side for bent pins or poor contact pressure. If the problem is found, repair it.
3. If problem is not found in Step 1 and 2, the ECM could be faulty. If so, make sure there were no DTC's before swapping the ECM with a new one, and then check the vehicle again. If DTC's were found, examine this first before swapping ECM.
4. Re-test the original ECM: Install the original ECM (may be broken) into a known-good vehicle and check the vehicle. If the problem occurs again, replace the original ECM with a new one. If problem does not occur, this is intermittent problem.