Repair of Rear Wiring Harness

Repair Of Rear Wiring Harness

NOTE:
- The combination wires for ABS and BVA are integrated in the wiring harness. In the event of damage, the integrated wires can be removed and replaced by repair wires. The disconnection point is plug connector X 2/4 for the passenger compartment/rear end (yellow) or connection points. The plug connection is located behind the driver's seat, to the left, beneath the belt roller.
- After repair, the following function tests must be performed:
- ABS: test with the Porsche System Tester 2.
- BVA: the indicator light must go out with the engine running and the brake linings intact.







- Plug connection X 2/4, -(arrow)- passenger compartment/rear end: install preassembled contacts or join wires at connection points.

Removing Rear Wiring Harness
1. Disconnect the battery and cover terminal or battery.
2. Undo combination wire in the area of the rear wheel housing.
3. Remove trim of seat well and cover of rear side member.
4. Undo rubber grommet, unclip combination wire on inside and open wiring duct.
5. Uncover combination wire in the interior as far as plug connection X 2/4 and disconnect plug connection (do not damage any other wires).

Install Rear Wiring Harness
1. Install repair wire in wheel housing and route in the wiring duct as far as plug connection X 2/4.
2. Join wires at the connection points using a crimp connector and crimping tool (see Workshop Equipment). Install preassembled contacts in plug connection X 2/4.
3. Colour coding of left and right hand sides of wires:
- Wire 1 - br/gn
- Wire 2 - br/bk
- Wire 3 - br
- Wire 4 - br/bl
- Wire 5 - br/wt
- br - brown
- bk - black
- bl - blue
- wt - white
- gn - green







4. -Unlocking tool- to unlock the old contacts in the plug connection (see Workshop Equipment).
5. Unlock the old contacts of the combination wire with the unlocking tool, and remove. Install new contacts of the repair wire in the same location.







6. -Plug connection X 2/4- (white).
7. Combination wire, rear left:
- Combination wire ABS and BVA in plug connection x 2/4 (white)
- br/wt in pin 16 (ABS)
- br/bl in pin 17 (ABS)
- br/gr in pin 20 (BVA)

8. Combination wire, rear right:
- br/wt in pin 18 (ABS)
- br/bl in pin 19 (ABS)

9. The ground leads of the combination wires (brown) are the same on both right and left. Connection point No. 48 as shown in circuit diagram.
- Strip 10 mm of insulation oft the wires.
- Push on shrink-fit hose.
- Using a crimp connector, join brown wire of combination wire to brown wire of rear-end wiring harness
- Shrink heat-shrinking tube with a hot-air gun so that wires are watertight.

10. BVA wire of combination wire (brown/green) at connection point No. 47 as shown in circuit diagram.
- Strip 10 mm of wire.
- Push on shrink-fit hose.
- Using a crimp connector, join brown/green wire of combination wire to brown/green wire of rear-end wiring harness.
- Shrink heat-shrinking tube with a hot-air gun so that wires are watertight.

11. The BVA wires of the combination wires (brown/black) are the same on both right and left. Connection point No. 46 as shown in circuit diagram.
- Strip 10 mm of wire.
- Push on shrink-fit hose.
- Using a crimp connector, join brown/black wire of combination wire to brown/black wire of rear-end wiring harness.
- Shrink heat-shrinking tube with a hot-air gun so that wires are watertight.

12. Wind commercially available PVC tape around wires.