W07.08-1011-09
Shown on engine 470.9 |
1 | Electrical connector | 6 | Electrical wiring harness | 11 | Rubber damper | ||
2 | Bolts | 7 | Fuel line (only with engine 470.9 or engine 471.9 beginning with engine end number 032691) | 12 | Electrical wiring harness | ||
3 | Electrical connector | 8 | Bolts | 13 | Fuel line (only with engine 470.9 or engine 471.9 beginning with engine end number 032691) | ||
4 | Oil suction pipe | 9 | Screw | 14 | Banjo bolt | ||
5 | Bracket | 10 | Bracket | A4 | Engine management control unit (MCM) |
Shown on engine 470.9 |
7 | Fuel line (only with engine 470.9 or engine 471.9 beginning with engine end number 032691) |
13 | Fuel line (only with engine 470.9 or engine 471.9 beginning with engine end number 032691) |
15 | Fuel filter module |
16 | Screw/bolt (only for engine 470.9 or engine 471.9 as of engine end number 032691) |
17 | Sealing rings |
W07.08-1012-04
Shown on engine 471.9 |
15 | Fuel filter module |
18 | Union nuts (only for engine 471.9 up to engine end number 032690) |
19 | Fuel lines (only with engine 471.9 up to engine end number 032690) |
W07.08-1014-11
Danger | Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel. | No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only. | |
Warning | Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running. | Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. | |
Topical note | Information on preventing damage to electronic components due to electrostatic discharge | ||
Topical note | Notes on avoiding damage through contamination and foreign objects | ||
Note on calculation of tightening torque when using insertion or socket tools with various effective lengths | |||
| Remove | ||
1 | Connect the vehicle diagnosis system, begin the diagnosis, and perform the quick test. | Only if the engine management (MCM) control unit (A4) is replaced. | |
2.1 | Select "Control unit replacement" and follow the instructions. | If the engine management (MCM) control unit (A4) is replaced. | |
Control unit replacement is completely menu-assisted under: | |||
2.2 | Switch off ignition. | If engine management (MCM) control unit (A4) is not replaced. | |
See information from body manufacturer. | |||
3 | Disconnect the electrical connector (1) from the engine management (MCM) control unit (A4). | ||
4 | Remove the screws (2) and disconnect the electrical connector (3) on the engine management (MCM) control unit (A4). | ||
5 | Remove the bracket (5) from the engine management (MCM) control unit (A4). | ||
6 | Drain fuel at the fuel filter module (15). | ||
7 | Remove banjo bolts (14). | Collect fuel which runs out in a suitable container. | |
8 | Remove screw (9). | ||
9 | Expose the electrical wiring harness (6). | ||
10.1 | Remove the screw (16) and take off the fuel lines (7, 13). | Engine 470.9, 471.9 as of engine end number 032691 | |
Collect fuel which runs out in a suitable container. | |||
10.2 | Unscrew the union nuts (18) and take off the fuel lines (19). | Engine 471.9 up to engine end number 032690 | |
Collect fuel which runs out in a suitable container. | |||
11 | Remove bolts (8). | ||
12 | Remove and take out the engine management (MCM) control unit (A4) with the rubber dampers (11). | ||
| Install | ||
13 | Install the engine management (MCM) control unit (A4) with the rubber dampers (11). | Take note of installation position of rubber dampers (11). | |
14 | Tighten screws (8). | Engine 470.9, 471.9Bolt, engine management (MCM) control unit to crankcase | |
15.1 | Place the fuel lines (7, 13) with new sealing rings (17) on the fuel filter module (15) and tighten the screw (16). | For engines 470.9, 471.9 beginning with engine end number 032691 | |
Bolt, flange (fuel cooling system) to fuel filter module | |||
15.2 | Place the fuel lines (19) with new sealing rings (17) on the fuel filter module (15) and tighten the union nuts (18). | For engine 471.9 up to engine end number 032690 | |
Union nut, fuel line (fuel cooling system) to fuel filter module | |||
16 | Tighten the banjo bolts (14). | Replace sealing rings of banjo bolts (14). | |
Engine 470.9, 471.9Banjo bolt, fuel line from fuel filter module to engine management (MCM) control unit | |||
17 | Tighten the bracket (10) with the screw (9). | Engine 470.9, 471.9Bolt, bracket for fuel line to engine management (MCM) control unit | |
18 | Install the bracket (5) on the engine management (MCM) control unit (A4). | Engine 470.9, 471.9Bolt, bracket for oil suction pipe to engine management (MCM) control unit | |
19 | Connect the electrical connector (3) to the engine management (MCM) control unit (A4) and tighten screws (2). | Engine 470.9, 471.9Bolt, electrical connection to engine management (MCM) control unit | |
20 | Connect the electrical connection (1) to the engine management (MCM) control unit (A4). | ||
21 | Follow the instructions for control unit replacement in the vehicle diagnosis system. | Only if engine management (MCM) control unit (A4) was replaced. | |
See information from body manufacturer. | |||
22 | Fill fuel low-pressure circuit. | ||
23 | Start engine and perform an engine test run. | Allow the engine to run at a higher engine speed. | |
If engine fails to start or only runs for a brief period, | |||
| |||
Fill fuel low-pressure circuit again. | |||
24 | End diagnosis and remove vehicle diagnosis system. | Only if engine management (MCM) control unit (A4) was replaced. |