BMW 1992 525i Electrical Troubleshooting Manual page 124

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IB!itl
DIGITAL ENGINE ELECTRONICS (DME M1.3, 6-CYLINDER M30)
.... ....
(0
f\)
Pin
"f\tpe
Description/Function
Connection
1\'pe
ot
Signal Tester Display
Measurement Notes
29 E
Vehicle speed sensor Instrument cluster Square wave krn/h
signal
30 Not used
31 E Cylinder Identification sensor
Cylinder Identification sensor
ON/OFF
See status monitoring
(Ignition) (connection A)
32 A
tl Measuring signal (KVA signal) Instrument cluster Square wave
Multlmeter function pulse
signal duration
33
Not used
34
Not used
35 Not used
36 A DME main relay DME main relay terminal 85 Ground ON Diagnosis not possible
....
If not fitted, connect
1\)
....
jumper at relay
0
.
terminal 30 and 87
1\)
I
n
37 E U-Batt from Main relay terminal 87 U-Batt Voltage value Perform status monitoring.
DME main relay Diagnosis not possible If
signal not applied.
Connect jumper terminal
30 and 87 on relay
38
E Drive away protection
On-board computer
>
10V
39 E Programming voltage
Diagnostic connector
Only activated for control
unit programming
40
E A/C compressor signal
Pressure switch, compressor ON/OFF
relay
41 E Auxiliary fan signal
IHKR control unit 12V
ON/OFF
42 E Drive range P/N
Transmission selector lever Ground
ON
When position P/N
switch
.....
43 Not used
~