Engine management system AGX 2.5 TDI from February 1999 (III).
Diesel fuel injection control unit, engine crankshaft speed sensor, injector needle stroke sensor, temperature sensor, electronic engine immobilizer control unit

| G28 | engine crankshaft speed sensor, on the rear left side of the engine |
| G72 | temperature sensor in the intake manifold, in the engine compartment, front left |
| G80 | injector needle stroke sensor |
| J248 | diesel fuel injection control unit, near the battery |
| J362 | electronic engine immobilizer control unit, behind the instrument panel on the left |
| K117 | electronic engine immobilizer warning light |
| T2 | wiring connector. 2-pin, on the left side of the engine |
| T3a | wiring connector, 3-pin, near the engine crankshaft speed sensor |
| T12s | wiring connector, 12-pin |
| T14 | wiring connector, 14-pin, in the lower part of the passenger compartment, front left, connector for the VAG 1551 tester |
| T22d | wiring connector, 22-pin, left under the instrument panel |
| T68 | wiring connector, 68-pin |
| (11) | connection to "ground" |
| (156) | body connection, diesel fuel injection system wiring kit |
| (220) | connection to the body (mass sensor), engine wiring harness kit |
| (H20) | connection 1, diagnostic wiring kit (rotation speed signal) |
| (H21) | connection 2, diagnostic wiring kit |
| * | not available on vehicles with electronic engine immobilizer |
| - - - - | only on vehicles with electronic engine immobilizer |

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