BMW 1992 525i Electrical Troubleshooting Manual page 159

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DIGITAL ENGINE ELECTRONICS (DME M3.1, 6-CYLINDER M50)
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Pin
1)rpe Description/Function
Connection
1\'pe of Signal Tester Display Measurement Notes
78 E
Engine temperature Engine temperature sensor 0 ... 5V
oc
Temperature-dependent
79 Not used
80 Not used
81
E Drive-away protection On-board computer > 10V
82 Not used
83
Not used
84 Not used
85 E Pressure signal Pressure switch
86 E Compressor signal IHKA control unit
87 E AxD diagnostic data llne Diagnostic connector
> 10V
When cover of diagnostic
_.,
connector closed N
....
88
EIA
TxD diagnostic data line Diagnostic connector Ground When cover of diagnostic
0
.
connector closed
._..,
I
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