BMW 1992 525i Electrical Troubleshooting Manual page 125

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DIGITAL ENGINE ELECTRONICS (DME M1.3, 6-CYLINDER M30)
.... ....
U5
1\)
Pin
Type Description/Function
Connection T)'pe of Signal Tester Display Measurement Notes
44 E
Intake air temperature
Air flow meter 0 ...
5V
oc
Temperature dependent
45 E
Engine coolant temperature
Engine coolant
0 ... 5V
oc
Temperature dependent
temperature sensor
46 Not used
47 E
Inductive pulse generator
Pulse generator engine A/C voltage Engine speed Between Pins 47 and 48
(connection A)
speed, Cfankshaft position (can only be measured
with crankshaft rotation)
48
E Inductive pulse generator
Pulse generator engine A/C voltage Engine speed Status monitoring at
(connection A}
speed, crankshaft position or above starting rpm
49 Not used
50
Not used
....
51 E Ignition timing intervention
Electronic transmission
Ground ON Only active during gear
1\)
....
control unit (EGS} shift
0
.
1\)
52 E
Idle signal Throttle switch Ground ON See status monitoring I
C1
on set idle speed
53 E
Full load signal VL Throttle switch Ground ON At full load (kick-down)
54 E
Torque converter clutch WK Electronic transmission Ground ON {with engine running) When WK engaged, see
control unit (EGS) status monitoring
55 EtA
TxD diagnostic data line Diagnostic socket Ground
When cover of diagnostic
connector closed
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