Malfunction Indicator Lamp, Function Test Audi A8 D3 рестайлинг

Malfunction Indicator Lamp, Function Test

1. Switch ignition on.

1. Catalytic converter monitoring warning lamp must go on

1. Start engine.

1. Shortly after starting engine, catalytic converter monitoring lamp goes out if there are no emissions-related malfunctions stored in the DTC memory.

Note. The switch-on signal for Malfunction Indicator Lamp (MIL) is transferred from Engine Control Module (ECM) or Transmission Control Module (TCM) to the instrument cluster via CAN-Bus. Check CAN bus terminal resistance --> Data Bus Terminal Resistance, Checking .