Engine management system AHD 2.5 TDI since February 1999 (II).
Diesel fuel injection control unit, boost pressure limitation, terminal 30 power supply relay, injection start valve, exhaust gas recirculation system, idle switch, accelerator pedal position sensor

| F8 | accelerator pedal limit switch |
| F60 | idle speed switch |
| G79 | accelerator pedal position sensor, in the engine compartment on the front wall on the left |
| J248 | diesel fuel injection control unit, near the battery |
| J317 | power relay terminal 30, under the driver's seat |
| J365 | air conditioning cut-off relay, under the driver's seat |
| N18 | exhaust gas recirculation valve, in the middle of the engine compartment |
| N75 | boost pressure limiting solenoid valve, in the middle of the engine compartment |
| N108 | injection start valve, under the high-pressure fuel pump |
| T10 | wiring connector, 10-pin, left side of engine |
| T68 | wiring connector, 68-pin |
| (F25) | connection 1 in the diesel fuel injection system wiring kit |
| * | only with air conditioning |

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