Disconnect/connect engine wiring harness

AR15.18-P-1000-03OLD

Disconnect/connect engine wiring harness

ENGINE

651 in MODEL 205

1

Disconnect electrical connection (1) on CDI control unit (N3/9/).

2

Disconnect electrical connection (2) for oxygen sensor upstream of catalytic converter.

3

Disconnect vehicle interior and engine wiring harness (X26) electrical connection.

4

Disconnect electrical connection (3) for temperature sensor upstream of CAT.

5

Remove cover (4).

6

Detach electrical lines (5, 6, 7, 8) at firewall and fix to engine.

 Do not mix up electrical lines (5, 6, 7, 8); mark if necessary.

7

Vehicles with code 427 (7G-TRONIC PLUS)
Disconnect electrical connection (11) from intelligent servo module for DIRECT SELECT (A80).

8

Disconnect electrical connection from electrical auxiliary oil pump (M42).

9

Vehicles with code 427 (7G-TRONIC PLUS)
Detach heat shield (9) from transmission.

10

Vehicles with code 427 (7G-TRONIC PLUS)
Disconnect electrical connection (10) from fully integrated transmission control controller unit (Y3/8).

11

Unclip engine wiring harness (12) at the respective retaining clip (arrows) and lift somewhat.

12

Remove screw/bolt (13).

13

Remove cover (14).

14

Disconnect electrical connection at camshaft Hall sensor (B6/1).

15

Disconnect electrical connection at cylinder 1 fuel injector (Y76/1), cylinder 2 fuel injector (Y76/2), cylinder 3 fuel injector (Y76/3), cylinder 4 fuel injector (Y76/4).

16

Disconnect electrical connection for temperature sensor upstream of turbocharger at connecting point (15).

17

Disconnect vehicle interior and engine wiring harness (X26) electrical connection.

18

Disconnect glow plug electrical connection (X214).

19

Disconnect electrical connection on the fuel pressure sensor (B4/7).

20

Disconnect electrical connection at boost pressure control pressure transducer (Y31/5).

21

Disconnect electrical connection at exhaust pressure sensor (B60).

22

Disconnect electrical connection at pressure regulating valve (Y74).

23

Disconnect electrical connection at fuel filter condensation sensor with heating element (B76/1).

24

Disconnect electrical connection from intake port shutoff actuator motor (M55).

25

Disconnect electrical connection on DPF differential pressure sensor (B28/8).

26

Disconnect electrical connection on high pressure fuel pressure sensor (B4/6).

27

Pull engine wiring harness (12) and cable duct (16) upwards and fix in place.

28

Connect in reverse order.