BMW 1999-2005 M3 Service Manual page 1241

On-Board Diagnostics
BMW P-code
code
23 P0206
24 P0204
25 P0135
27 P1550
29
30
31
3 of 20
Fault type and Signal type and
function range
Injector circuit cyl. Output digital
6 pulse width (active
low)
Injector circuit cyl. Output digital
4 pulse width (active
low)
Oxygen sensor Output digital
heater pre-cat pulse width (active
(Bank1) low)
Idle control valve Output digital
closing coil pulse width (active
low)
Ignition coil cyl.1 Input analog
timing (100 mV)
Ignition coil cyl.3 Input analog
timing (100 mV)
Ignition coil cyl.5 Input analog
timing (100 mV)
http://ebahn.bentleypublishers.com/BMW/3/E46/Repair%20Manuals/8...
Explanation
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
DME final stage will set flag
whenever a short to ground, a
short to battery voltage or a
disconnection between output
transistor and component
exists.
DME initiates secondary
ignition for each cylinder then
looks for feedback through
shunt resistor in harness to
determine if ignition actually
occurred.
DME initiates secondary
ignition for each cylinder then
looks for feedback through
shunt resistor in harness to
determine if ignition actually
occurred.
DME initiates secondary
ignition for each cylinder then
looks for feedback through
shunt resistor in harness to
determine if ignition actually
occurred.
2/25/2009 11:23 PM