12 51 001 Replacing Wiring Harness Section For Engine (N12)
WARNING: This page is about a different variant/trim than selected.
IMPORTANT:
Read and comply with notes on protection against electrostatic damage (ESD protection)
.
Necessary preliminary tasks:
- Read out fault memory of DME control unit
- Switch off ignition
- Disconnect BATTERY NEGATIVE LEAD
- Remove INTAKE FILTER HOUSING
Unlock and remove cover (1).
Unlock the two rear plugs (1) and disconnect.
Unlock plugs (1) for camshaft sensors and disconnect.
Unlock plug (2) for oil pressure sensor and disconnect.
Unlock and detach vacuum line (3).
Detach cable duct (4) upwards from holder.
WORK STEP CHART
| Work step | Note: |
|---|---|
| Unlock plug for coolant temperature sensor and disconnect | |
| Unlock plug on coolant thermostat and disconnect | |
| Unlock plug for eccentric shaft sensor and disconnect | |
| Unlock plugs for ignition coils and disconnect | |
| Disconnect ground connection at cylinder head | Tightening torque 12 51 1AZ . |
| Unlock plug for front solenoid valve and disconnect | |
| Unlock plug for control and monitor sensors and disconnect | |
| Unlock plug for eccentric shaft positioning motor and disconnect | |
| Unlock plugs for fuel injectors and disconnect | |
| Unlock plug for differential pressure sensor and disconnect | |
| Unlock plug for knock sensor and disconnect | |
| Unlock plug for tank vent valve and disconnect | |
| Unlock plug for crankshaft sensor and disconnect | |
| Unlock plug for throttle valve assembly and disconnect | |
| Unlock plug for rear solenoid valve and disconnect | |
| Unlock plug for friction gear and disconnect |
NOTE:
Check stored fault messages.
Delete fault memory.
Delete fault memory.