E28 Ground/ earth points and circuits

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E28 Ground Distribution

Compiled by Rod Paine from the 1983 BMW 528e / 533i Electrical Troubleshooting Manual Circuit Diagrams, July 2004

G102, on LH fender behind LH headlights is ground for:

- Battery

- LH Turn/Park Light

- LH Horn

- LH High Beam

- LH Dual Beam

- RH Horn

- LH Fog Light

- RH Fog Light

- RH Dual Beam

- RH High Beam

- Coolent Level Switch (528e ONLY)

- Washer Fluid Level Switch

- RH Front Turn/Park Light

- LH Front Marker Light

- RH Front Marker Light

- High Beam Relay

- Low Beam Check Relay

- Aux Radiator Fan Motor

- High Speed Motor Relay

- Normal Speed Motor Relay

 

G103, above starter motor on engine block or intake manifold stud is ground for:

 

- Purge Valve

- Throttle Switch

- Main Relay

- Idle Speed Control Unit (533i ONLY)

- Idle Speed Control Unit (528e)

- Motronic Control Unit (7 ground wires)

- Flywheel Sensors cable shield

- Coolant Temperature Switch

- Coolant Temperature Sensor

- Filter Capacitor

- Oil Pressure Switch

 

G200, under LH side of dash near brake pedal, is ground for:

 

- Auto Trans Range Switch

- Instrument Cluster Circuit Board

- Cruise Control Actuator

- Cruise Control Control Unit

- Rear Defogger Switch

- Power Window Relay

- Light Switch

- Ignition Switch

- Wiper Washer Switch

- Flasher Switch and connection to G201 ground point.

- Passenger Mirrior

- Drivers Mirror

- LH Front Door Lock Actuator

- Lock Heater Control Unit

- Mirror Control Switch

- Seatbelt Warning Timer

- Coolant Level Switch (533i ONLY)

- Hydraulic Pressure Switch (533i ONLY)

- Brake Accumulator Switch (5331 ONLY)

- Brake Fluid Level Switch

- LH Front Brake Rotor

- Wiper Motor

- Interior Temp Sensor

- Drivers Window Console Switch

- LH Rear Window Console Switch

- Trunk Lock Actuator

- Central Locking Control Unit

- RH Front Window Console Switch

- RH Rear Window Console Switch

- Glove Box Light

- Evaporator Temp Regulator

- Evaporator Temp Sensor

- Heater Temp Sensor

- Heater Regulator

- On-Board Computer

- Blower Speed Switch

- Evaporator Blower Resistors

- Hazard Switch

- Digital Radio

- Chime

- Cigar Lighter

- Auto Charging Flashlight

 

G301, under LH side of rear seat is ground for:

 

- LH Rear Light Assy.

- LH License Light

- RH License Light

- Rear Lights Check Relay

- RH Rear Light Assy.

- LH Rear Side Marker Light

- RH Rear Side Marker Light

- RH Rear Brake Rotor

- Fuel Tank Sender

- Main Fuel Pump

- Auxiliary Fuel Pump

- Rear Window Defogger Element

- Interior Lights Timer Control