4396133

1.

Igintion " OFF ".

2.

Connect scantool and select Diagnostic Trouble Code(DTC).

3.

Clear DTC and then, Monitor DTC status.

4.

Is the DTC P1636 is retreived again ?

YES

Substitute with a known-good ECM and check for proper operation.

If the problem is corrected, replace ECM and then go to "Verification of Vehicle Repair" procedure.

NO

Fault is intermittent caused by poor contact in the sensor’s and/or ECM’s connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.