BMW 3 (E46). Instruction - page 90
Connector X60004 40-pin black
Pin
Signal
Component/function
Notes
2
Input
Feedback signal,
engine start
Instrument cluster control
module
3
Input
Signal, secondary air
injection pump
Secondary air injection pump
relay
4
Input
Signal, electric fan
Auxiliary fan motor
5
not used
6
not used
7
Pedal position sensor
(PWG) (MS 43.0)
Pedal position sensor (PWG)
(MS 43.0)
8
Signal, pedal position
sensor (PWG) (MS
43.0)
Pedal position sensor (PWG)
(MS 43.0)
9
Pedal position sensor
(PWG) (MS 43.0)
Pedal position sensor (PWG)
(MS 43.0)
10
Input
Signal, fuel pump relay
1
Fuel pump relay 1
11
Input
Signal, oil pressure
switch
Instrument cluster control
module
12
Pedal position sensor
(PWG) (MS 43.0)
Pedal position sensor (PWG)
(MS 43.0)
13
Signal, pedal position
sensor (PWG) (MS
43.0)
Pedal position sensor (PWG)
(MS 43.0)
14
Pedal position sensor
(PWG) (MS 43.0)
Pedal position sensor (PWG)
(MS 43.0)
15
not used
16
not used
17
Input
Speed signal (MS 42.0
up to 6-00)(MS 42.0
from 6-00 and MS 43.0)
Data link connector OBDII 16
pin connector)
18
not used
19
not used
Connector X60004 40-pin black
Pin
Signal
Component/function
Notes
20
Output
Diagnostic module tank
leak (DMTL) detection
(MS 43.0)
Leak detection (DMTL) (MS
43.0)
21
Input
Signal, oil level sensor
Instrument cluster control
module
22
Input
Signal, processed
wheel speed, right rear
ABS/ASC module, ABS/DSC
module
23
Output
Signal, clutch pedal
position switch
Clutch pedal position switch
24
Input
Signal, brake light
switch
Light switching center control
unit
25
not used
26
Input
Terminal 15
Fuse F29
27
Output
Voltage supply,
multifunction steering
wheel
Volute spring
28
Input
Signal, brake light
switch
Brake light switch
29
Input
Signal, relay, A/C
compressor
A/C compressor relay
30
Signal, leakage
diagnosis pump (MS
42.0)Signal diagnostic
module (MS43.0)
Leakage diagnosis pumpLeak
detection (MS 43.0)
31
not used
32
Input/output
Transmit diagnosis line
(TXD) data link signal
Data link connector (MS
42.0)OBD II connector (MS
43.0)
33
Input
Electronic vehicle
immobilization
Electronic immobilizer control
module
34
Signal, leakage
diagnosis pump (LDP)
(MS 42.0)
Leakage diagnosis pump (LDP)
(MS 42.0)
35
not used
36
Input/output
CAN bus signal, high
Connector, CAN bus
Connector X60004 40-pin black
Pin
Signal
Component/function
Notes
37
Input/output
CAN bus signal, low
Connector, CAN bus
38
Ground
Ground, coolant outlet
temperature sensor
Temperature sensor
39
Output
Signal, coolant outlet
temperature
Temperature sensor
40
not used
Connector X60005 9-pin black
Pin
Signal
Component/function
Notes
1
Input
Signal, ignition coil 3
Ignition coil 3
2
Input
Signal, ignition coil 2
Ignition coil 2
3
Input
Signal, ignition coil 1
Ignition coil 1
4
not used
5
Ground
Ground
Ground connector
6
Ground
Ground
Ground connector
7
Input
Signal, ignition coil 6
Ignition coil 6
8
Input
Signal, ignition coil 5
Ignition coil 5
9
Input
Signal, ignition coil 4
Ignition coil 4
170-1
General
This section covers component repair
information for the engine cooling
system.
The E46 cooling system uses a
centrifugal-type belt-driven coolant
pump, an electric primary cooling fan,
and an electrically heated thermostat.
The cooling system is unique in that
the cooling fan and the thermostat are
controlled and monitored by the DME
engine management system.
Therefore, cooling system faults can be
diagnosed using an appropriate scan
tool.
Special tools
Special tools are necessary for fan
clutch removal and pressure testing
the cooling system.
Cooling fan counterhold wrench BMW
11 5 030
Cooling fan wrench BMW 11 5 040
Cooling system pressure tester BMW
17 0 002/17 0 005