12 51 240 Removing and installing/replacing engine sensor system module 2 wiring harness (N20)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION)
.
Necessary preliminary tasks:
- 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 bottom 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.