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

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