Without - BMW DIAGNOSTIC SYSTEM

ENTERING SELF-DIAGNOSTICS
1. Switch the ignition to the run "ON" position.
2. Depress the accelerator pedal five (5) times to the wide open throttle position within five (5) seconds.

Fig. 4 "Check Engine" Light Code Display:

^ tR = 5 sec. preparation for read-out
^ tWS = 0.5 sec. wait for synchronization
^ t1 = 2.5 sec. additional check engine lamp check
^ t2 = 2.5 sec. wait for read-out
^ t3 = 0.5 sec. check engine lamp on
^ t4 = 0.5 sec. check engine lamp off
^ t5 = 2.5 sec. time between code digits
^ t6 = 2.5 sec. time between different codes

3. Read and record all fault codes that are displayed.