ASC Interfaces

On vehicles equipped with ASC, the Engine Control Module is linked to the ASC control module through three signal lines for ASC regulation. The three signals are switched high/low input requests for power reduction/drag torque reduction. The signal paths follow the same logic as the Bosch engine management systems including:

- S-EML - Signal to the Engine Control Module of throttle regulation
- S-MSR (ZWV) - Signal request to the Engine Control Module for ignition timing retard and idle speed boost
- S-ASC (ZA) - Signal request to the Engine Control Module for fade out of ignition/injection and idle speed boost