Direct fuel injection system for diesel engines
* Only models with automatic transmission
** Models with air conditioning only
*** Only models with self-control system
****Only on models with 81 kW TDI engines
# Only models with manual transmission
# # Only models with 66 kW TDI engines
# # # Only models without air conditioning
Key to the diagram
- 1 - Battery
- 4 - Ignition switch
- 5 - Central scheme
- 6 - Three relay block (diesel models only)
- 1 - High Heat Output Relay
- 2 - Low heat output relay
- 3 - Injection system relay
- 6 - Engine electronics fuse
- 7 - Heating fuse 1
- 8 - Heating fuse 2
- 10 - Throttle control unit
- 11 - Intake air temperature sensor
- 12 - Coolant temperature sensor
- 16 - Motronic control unit
- 18 - Air flow sensor (MAF)
- 25 - Engine speed sensor
- 26 - Throttle position and idle speed sensor
- 31 - EGR valve
- 32 - Boost pressure regulator valve
- 33 - Brake pedal sensor/switch
- 34 - Clutch pedal sensor/switch
- 35 - Heating elements (coolant)
- 36 - Quantity regulator
- 37 - Needle lift sensor