Malfunction Indicator Lamp (MIL), Checking

Malfunction Indicator Lamp (MIL) In Instrument Cluster, Checking

Recommended special tools and equipment
- VAG1526 multimeter or VAG1715 multimeter
- VAG1594 connector test kit
- Wiring diagram

Test requirement







- The respective fuses of Malfunction Indicator Lamp (MIL) -K83- must be OK:

If emissions Malfunction Indicator Lamp (MIL) does not go out with engine running.

If emissions MIL does not light up when ignition is switched on:
- Switch on ignition:
Emissions MIL must light up.

If emissions MIL does not light up when ignition is switched on:
- Switch ignition off.
- Check wire from ECM to emissions MIL as follows:
- Connect test box to control module wiring harness, connect test box for wiring test. Test Box, Connecting For Wiring Test

- Remove instrument cluster.
- Check wire connection between Engine Control Module (ECM) and instrument cluster according to wiring diagram.
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Readiness Code, Generating

If no malfunctions are detected in wire from Engine Control Module (ECM) to Malfunction Indicator Lamp (MIL):
- Replace Motronic Engine Control Module (ECM) -J220-.

If emissions Malfunction Indicator Lamp (MIL) does not go out with engine running:
- Check DTC memory, Diagnostic mode 3: Check DTC memory. Diagnostic Mode 3: Check DTC Memory

If there is no malfunction present in DTC memory and emissions Malfunction Indicator Lamp (MIL) does not go out:
- Switch ignition off.
- Remove instrument cluster.
- Connect test box to control module wiring harness, connect test box for wiring test. Test Box, Connecting For Wiring Test
- Check wire connection between Engine Control Module (ECM) and instrument cluster according to wiring diagram.
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Readiness Code, Generating