12 51 235 Removing and installing/replacing engine sensor system module 1 wiring harness (N20)
WARNING: This page does not describe the selected car, but rather 50 other vehicles, including the 2016 BMW M5, 2016 BMW ActiveHybrid 5, 2016 BMW 550i xDrive, 2016 BMW 550i, and 2016 BMW 535i xDrive. 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 .
- Only vehicles with automatic transmission and rear-wheel drive:
Release TRANSMISSION OIL COOLER and place on its side, do not disconnect the lines.
- All-wheel drive vehicles only:
Remove STIFFENING PLATE
Overview, engine sensor system wiring harness module 1.
| Unlock and disconnect following connectors and lines |
|---|
| Unlock connector on charging pressure sensor and disconnect |
| Unlock connector on hot film air mass meter and disconnect |
| Unlock connector on intake pressure sensor and disconnect |
| Unlock connector on oxygen sensor and disconnect |
| Unlock connector on monitoring sensor and disconnect |
| Unlock connector on pressure converter and disconnect |
| Unlock connector on high-pressure fuel sensor and disconnect |
| Unlock connector on tank vent valve and disconnect |
| Unlock connector on starter motor and disconnect |
| Unlock connector on both knock sensors and disconnect |
| Release connector on oil pressure/temperature sensor and disconnect |
| Unlock connector on fuel low-pressure sensor and disconnect |
| Unlock connector on throttle body and disconnect |
| Unlock connector on high pressure pump and disconnect |
| Unlock connector on alternator and disconnect |
| Unlock connector on air conditioning compressor and disconnect |
| Unlock connector on oil level sensor and disconnect |
| Unlock connector on crankshaft sensor and disconnect |
| Unlock connector on heating element for air duct and disconnect |
| Unlock connector on coolant thermostat and disconnect |
| Unlock connector on hydraulic valve and disconnect |
| Unlock connector on the coolant pump and disconnect |
| Unlock connector on exhaust turbocharger and disconnect |
| Unlock connector on both camshaft adjustment solenoid valves and disconnect |
| Unlock connector on intake camshaft pulse sensor and disconnect |
| Unlock connector on exhaust camshaft pulse sensor and disconnect |
| Unlock connector on oil pressure switch and disconnect |
| Unlock connector on switching motor for eccentric shaft 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.
Delete fault memory.