12 51 306 Removing and installing the wiring harness - section for the supply unit module (B46, B48)
Attention!
Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) !
Necessary preliminary work:
- Remove BATTERY
- Remove UPPER BULKHEAD COVER
- Remove the STRUT BRACE
Removal:
Unlock and remove cover (1).
Unlock and pull off all connectors (1) in the direction of arrow at the control unit.
Unlock the lock (2) and release the cable clip (1) and place to one side.
Release the cable clip (2) from cover (1) and lay to one side.
Feed out cover (1) and remove.
Loosen screw (1).
Loosen the equipment holder (2) in the direction of arrow from the battery plate and pull it a bit towards the front.
Unlock and pull off all connectors (2) from power distribution box (1).
Overview of supply module wiring harness section
| Unlock and disconnect following connectors and lines | Note |
|---|---|
| Unlock and disconnect connector from DME control unit | |
| Unlock and pull off the connector from supply unit | |
| Release the ground connection at the engine block |
Release wiring harness from clips and retainers.
Feed out wiring harness and remove.
Installation:
Route and install wiring harness.
Plug in all connectors as specified in table.
All connectors must audibly engage.
Plug in all connectors (2) to the power distribution box (1).
All connectors must audibly engage.
Insert the equipment holder (2) in the direction of arrow at the rear in the battery plate (3).
Tighten screw (1).
Tightening torque 12 90 1AZ .
Connect all connectors (1) at the control unit in the direction of arrow.
All connectors (1) must engage audibly.
Lock the cover (1) in the lock (2).
Lock (2) must snap audibly into place.
Feed in and install the cover (1).
Attach the cable clip (2) to the cover (1).
Feed in the cable clip (1) and lock it in the lock (2).
Required follow-up work:
- Install BATTERY
- Install UPPER BULKHEAD COVER
- Install the STRUT BRACE