When Repairing Wiring Harness

CAUTION:
Always find cause of damage (e.g. sharp-edged body parts, faulty equipment, seized mechanisms, corrosion from penetrated water, etc.) before repairing a wiring harness.

- Read fault memory.

- Eliminate cause of damage.

- Disconnect battery negative terminal.

Only repair a wiring harness if according to schematics no safety-relevant systems (e.g. ABS, active rear-axle kinematics, airbag, etc.) are influenced. Otherwise replace faulty wiring harness or use repair cables.

After a repair on the wiring harness, perform function check and interrogate fault memory once again. Eliminate new faults it applicable and clear fault memories.