12 51 240 Removing and installing/replacing engine wiring harness sensor system module 2 (N20, N26)
IMPORTANT:
Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION)
.
Necessary preliminary work:
- Read out the fault memory of the DME control unit.
- Switch off ignition.
- Remove intake PLENUM .
- Release the COOLANT THERMOSTAT and set on the side. Do not drain the coolant and do not release the coolant hose.
- Remove top CLEAN AIR PIPE .
- Remove ENGINE VENTILATION LINE .
Overview of engine wiring harness sensor system module 2.
Release screws (1).
Tightening torque: 12 52 5AZ .
Release cable channel (2).
Installation note:
Reconnect the earth connection.
| Unlock and disconnect following connectors and lines | |
| Release connector from engine oil pressure-temperature sensor and pull off | |
| Unlock connector on hot film air mass meter and disconnect | |
| Unlock connector on tank vent valve and disconnect | |
| Release connector to wiring harness gearbox module and pull off | |
| Unlock connector on both camshaft adjustment solenoid valves and disconnect | |
| Unlock connector on coolant temperature sensor and disconnect | |
| Unlock connector on intake camshaft pulse sensor and disconnect | |
| Unlock connector on exhaust camshaft pulse sensor and disconnect | |
| Unlock connector on coolant thermostat and disconnect | |
| Unlock connector on exhaust turbocharger and disconnect | |
| Unlock connector on the coolant pump and disconnect | |
| Unlock connector on heating element for air duct and disconnect |
Release wiring harness if necessary from existing clips and clamps.
Feed out wiring harness and remove.
Installation note:
Check wiring harness installation arrangement.
Check plug connections for correct fit.
Check stored fault message.
Clear diagnostic fault entries from fault memory.