BMW 1992 525i Electrical Troubleshooting Manual page 139

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DIGITAL ENGINE ELECTRONICS (DME 1.2, 6-CYLINDER 538)
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Pin Assignments
X6000
Pin Type
Description/Function Connection 1\'Pe of Signal Tester Display Measurement Notes
1 A Ignition terminal
Ignition coil Primary signal Oscilloscope Engine test, test step 05
2 M Ground Ground point Ground
3 A EKP relay and TR signal EKP relay and Ground with Can only be measured
(crankshaft reference) electronic transmission superimposed ON when crankshaft rotating
control unit
signal
_,.
4 A Idle speed actuator Idle speed actuator
Pulsed ground Component activation
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0
5 A Evaporative valve Evaporative valve
Pulsed ground
CLOSED/OPEN
Perform component
.
,.,
activation, ground=>
I
Q)
closed
6 A Engine speed signal Instrument cluster Square wave One signal per Ignition
signal
7 E Air flow meter signal Air mass meter 0 ... 5
v
Load signal ms See status monitoring
8 E Cylinder Identification Cylinder Identification ON/OFF See status monitoring
sensor (ignition)
sensor (connection B)
9 Not used
10
M Ground, oxygen sensor
Oxygen sensor Ground
11
Not used
12
Not used
13 E RxD diagnostic data line
Diagnostic socket
> 10V
When cover of diagnostic
....
connector closed
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