71-50-170 E4 Engine Wiring Harness mounting instruction
For Harness Routing see Chapter 71-50-03.
On the following pages the mounting of the engine wiring harness is described in detail. The mounting
instruction is identical for both versions of E4 wiring harness (E4A-95-000-000 and E4B-95-000-000).
Fig. 71 - 35
The engine harness has two marked areas with red tape. The goal of the marking is to ensure an
adequate distance between the wiring harness and the cylinder head to avoid cafing of the wiring
harness. The red marking should be used as an installation aid.
The red markings indicates the areas for optimal fixation of the wiring harness on engine to avoid
chafing.
) Position 1 -> red tape wrapped over the three common routed wiring harnesses
) Position 2 -> red tape wrapped over the single wiring harness routed parallel the rail.
The red tapes are only installed on engine harness revisions 011 and higher and
overhauled engine harness revisions 010 and lower.
Position 1 Clamp:
These position indicates the area on the harness where the cable clamp must be mounted
see
The red marking should be fully covered by the cable clamp. If the red marking is clearly visible
caused by a shifted wiring harness, the position of the harness must be corrected.
Position 2 Rail:
The wiring harness should be mounted parallel to the rail in that way that the red marking is placed
on the end of the high pressure rail (Area of high pressure rail / rail pressure sensor) (see Fig. 71 – 36
Pos. 2.). The cable tie should also be mounted on the red marked area (see Fig. 71 -36 Pos. 2).
After mounting the engine harness on the described positions it has to be checked by the installer that
the bending radius is sufficient (enough place between harness and engine block) as described in
Fig. 71-37 to avoid chafing.
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