Computers and Control Systems: Application and ID

Modifications to this vehicle and service information as compared to MY 1990/91 engine 603.970 in model 126 are:

- Test and adjustment values
- Injection pump (cam shape)
- Operation of key shut-off
- EGR shut-off switchover valve and microswitch
- Vacuum line layout
- EDS control unit (reference map)
- EDS test program
- Electric wiring diagram
- Boost pressure control (P2) with boost pressure control valve and vacuum transducer

The following was deleted:
- Vacuum amplifier and vacuum amplifier switchover valve
- Engine overload protection including: switchover valve, engine overload protection switch, boost cut-out microswitch.