Engine Electrical System - Repair Instructions

Troubleshooting
- 12 00 Contents of Engine Electrical System General
- 12 00... Instructions for disconnecting and connecting battery
12 13 Notes on checking ignition system
Ignition Coil
- Troubleshooting
- Oscillograms
Ignition coil
Ignition wires, spark plugs
- 12 12 011 Replacing all spark plugs
  - Notes
  - Procedure
Electronic Switching Or Control Unit
Alternator with drive
Regulator
- 12 32 501 Replacing voltage regulator (Valeo/Bosch)
Starter with mounting
- 12 41 020 Removing and installing/replacing starter motor (M54)
- 12 41 041 Replacing solenoid switch
Starter lead
Engine wiring loom
- 12 51 001 Replacing wiring harness section for engine (M54)
- 12 51 100 Replacing wiring harness section for ignition coils (M54)
Oil Pressure & Oil Temperature Gauge
Switches and Relays
- 12 63 520 Replacing main relay (S62, M54)