BMW E36/5 318ti 1997, Electrical Troubleshooting Manual

Page: 82 / 275

BMW
1997 03/98
E = Input, A = Output, M = Ground
29 A Idle speed control valve control Idle speed control valve
30 A Oxygen sensor heating (-) Oxygen sensor (in front of catalytic
converter)
31 A Activate valve Cyl. 3 fuel injection valve
32 A Activate valve Cyl. 2 fuel injection valve
33 Not used
34 M Ground, remaining output stages (except
for ignition and fuel injection valves)
Ground point
35 Not used
36 A A/C compressor cutĆout Compressor control relay
37 Not used
38 Not used
39 Not used
40 E Cyl. 3Ć4 knock sensor Knock sensor
41 Not used
42 E TlĆmeasurement signal (fuel consumption) Instrument cluster
43 Not used
44 E Throttle position Throttle position sensor
45 M Ground Hot film air mass meter
46 M Sensor ground Oxygen sensors
47 Not used
48 Not used
49 A Cyl. 1 ignition coil control Cyl. 1 ignition coil
50 A Cyl. 2 ignition coil control Cyl. 2 ignition coil
51 Not used
52 Not used
53 A Component supply (+) Throttle position sensor/Fuel tank pressure
sensor
54 E Battery voltage from engine control module
relay
Engine control module relay, terminal 87
55 M Ground, ignition Ground point
56 E Ignition switch, terminal 15 Ignition switch, terminal 15
57 A Activate auxiliary fan Normal speed relay