Hint:
Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

How to proceed with troubleshooting
Terminals of ecuTerminals of ecu
Check tire pressure warning ecu
Disconnect the e56 ecu connector.
Measure the voltage and resistance of the wire
harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
Reconnect the e56 ecu connector.
Measure the ...
Removal (2005/11-2006/01)
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
Remove air cleaner case sub-assembly
Remove the air cleaner case (see ...
On-vehicle inspection
Connect intelligent tester
Connect the intelligent tester to the dlc3.
Start the engine and idle it.
Select the active test mode on the intelligent tester.
Hint:
Please refer to the intelligent tester operator's
manual for further details.
Check actuator motor operation
...