3 Multiplexed Electrical System Service Manual Control Unit Location CECU Locations The heart of the multiplexed instrumentation system is the CECU. The unit is located in the center of the dash, beneath the cupholders. Typical CECU Locations (Kenworth) 1. AMOT module 5. ELS Amplifier 2. Allison Transmission 6. Driver Door Controller 3. Cab ECU 4. ABS ECU 7. Passenger Door Controller Typical CECU Locations (Peterbilt) 1. AMOT module 2. Allison Transmission 3. Cab ECU 4. ABS ECU 5. ELS Amplifier 6. Driver Door Controller 7. Passenger Door Controller 3 - 2 PM819023/KM815057 (08/14/2012)