Description

Malfunction Indicator Lamp Description

1. Fault Code:
MIL Line Fault P1607

2. Monitoring Procedure
Whenever a fault event status is detected from the MIL lamp drive hardware, a fault counter is incremented. When there is no fault event status from the MIL lamp drive hardware the fault counter is decremented. When the fault counter reaches a given threshold there is a MIL lamp open or short circuit fault present.

3. Primary Detection Parameter
Hardware fault status from MIL lamp drive ASIC, which monitors line voltage before low side drive transistor.

4. Fault Criteria Limits
255 continuous fault events detected from the MIL lamp drive ASIC.

5. Monitoring Conditions
Continuous

6. Monitoring Time Length / Frequency of Checks
The hardware fault status is checked every 10ms.

7. Criteria for Storing Fault Code
Two successive trips where the diagnostic routines indicate a failed MIL lamp or MIL circuit.

8. Criteria for Illuminating MIL
Two successive trips where the diagnostic routines indicate a failed MIL lamp or MIL circuit.

9. Criteria for Determining Out of Range Input Signals
The MIL lamp monitoring procedure uses non-linear signals; the criteria will be signal/no signal.