MIL Lamp Strategy

I/M Readiness OK to Test = Key On Engine OFF  - MIL Lamp will remain on until the vehicle is started or Ignition is turned off.

I/M not ready for testing = Key On Engine OFF  - MIL Lamp on solid for (15) seconds then MIL Lamp will flash on/off for (5) seconds then it will remain on until the vehicle is started or the Ignition is turned off.

Fig 1: Identifying MIL Lamp Strategy

Courtesy of DAIMLERCHRYSLER CORPORATION

The following table summarizes the various OBDII monitors operation.

Fig 2: Identifying OBDII/EUROIII Monitor Operation

Courtesy of DAIMLERCHRYSLER CORPORATION