64 99... Fault 6.1
WARNING: This page is about a different car, the 2003 BMW 525i, 2002 BMW 525i, and 2001 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.
Instruction:
Start independent parking heater repeatedly following after-running.
After 32 seconds, measure output of fuel metering pump using peripherals box (pin allocation: refer to appropriate information on DIS circuit diagram) and vehicle ground.
Specified value:
Voltage switches between 0V and 12V
FAULT DESCRIPTION
| Question | Answer | Measure |
|---|---|---|
| Is supply voltage OK? | No | Replace independent parking heater control unit, refer to 64 12 520 REMOVING AND INSTALLING / REPLACING CONTROL UNIT WITH HEAT EXCHANGER (THERMO TOP S) |
| Yes | Start independent parking heater repeatedly following after-running. | |
| Measure after 32 seconds on the fuel metering pump. Specified value as above |
No | Repair or replace supply wire from independent parking heater control unit to metering pump. |
| Yes | Replace metering pump, refer to 64 12 600 REMOVING AND INSTALLING OR REPLACING FUEL PUMP |