Test readings, control module connections
| Test readings, control module connections |
| Remember: |
| • |
Note the test conditions and use common sense when assessing the test result.
|
|
| • |
The test readings presented are with the ignition ON unless otherwise stated.
|
|
| • |
First check that the control module has a power supply and is grounded.
|
|
| • |
Then check all sensor inputs and signals from other systems.
|
|
| • |
Finally check the control module outputs. Remember that the test readings do not indicate whether the actuator is working.
|
|
| • |
If any reading is not OK, consult the wiring diagram to trace the leads, connectors or components which should be checked more thoroughly.
|
|
| • |
The specified test readings refer to those obtained with a calibrated Fluke 88/97.
|
|
| • |
The test values %(+) and ms(+) indicate the pulse ratio and pulse duration of the signal. A test instrument for measuring pulse ratio and pulse duration must be used. The (+) sign indicates a positive trigger pulse, TRIG+.
|
|
| K12 |
|
Pin
|
Pin BOB
|
Lead colour
|
Component/
Function |
In/Out
|
Test conditions
|
Across
|
Test reading
|
See
|
|
1 (K12)
|
21
|
YE/GY
|
Battery Voltage (+15 circuit)
|
In
|
|
21-B+
|
< 0.5 V
|
|
|
2 (K12)
|
22
|
BK
|
Ground
|
In
|
|
22-B-
|
< 0.5 V
|
|
|
3 (K12)
|
23
|
BK
|
Ground
|
In
|
|
23-B-
|
< 0.1 V
|
|
|
4 (K12)
|
24
|
|
No connection
|
|
|
|
|
|
|
5 (K12)
|
25
|
GN
|
I-Bus (+)
|
In/Out
|
|
25-22
|
2.5 V
|
|
|
6 (K12)
|
26
|
YE/GY
|
Battery Voltage (+15 circuit)
|
In
|
|
26-B+
|
< 0.5 V
|
|
|
7 (K12)
|
27
|
RD
|
Battery Voltage (+30 circuit)
|
In
|
|
27-B+
|
< 0.5 V
|
|
|
8 (K12)
|
28
|
YE/WH
|
Ground, Sensor ground, fuel level sensor
|
Out
|
|
28-B-
|
< 0.1 V
|
|
|
9 (K12)
|
29
|
GY/WH
|
Sensor, fuel level
|
In
|
|
29-28
|
0.5-3.7 V
|
|
|
10 (K12)
|
30
|
OG/WH
|
Wheel speed, Rear left
|
In
|
Rotate wheel slowly
|
30-32
|
0 V B+
(LP HI LOp) |
|
|
Rotate wheel 1/2 revolution per second
|
30-22
|
15 Hz 50%
(LP HI LOp) |
|
|||||
|
11 (K12)
|
31
|
|
No connection
|
|
|
|
|
|
|
12 (K12)
|
32
|
WH
|
I-Bus (-)
|
|
|
32-22
|
2.5 V
|
|
> = greater than; < = less than; ~ = alternating current (LP: LOGIC PROBE P = select pulse; p = visible pulse)
| K20 |
|
Pin
|
Pin BOB
|
Lead colour
|
Component/
Function |
In/Out
|
Test conditions
|
|
Across
|
Test reading
|
See
|
|
1 (K20)
|
1
|
BU
|
Warning lamp, AIRBAG
|
In
|
|
On
|
1-B-
|
0 V
|
|
|
Out
|
1-B-
|
B+
|
|||||||
|
2 (K20)
|
2
|
YE
|
Engine oil pressure warning lamp
|
In
|
|
On
|
2-B-
|
0 V
|
|
|
Out
|
2-B-
|
B+
|
|||||||
|
3 (K20)
|
3
|
BK/GN
|
Warning lamp, charging
|
In
|
|
On
|
3-B-
|
0 V
|
|
|
Out
|
3-B-
|
B+
|
|||||||
|
4 (K20)
|
4
|
|
No connection
|
|
|
|
|
|
|
|
5 (K20)
|
5
|
|
No connection
|
|
|
|
|
|
|
|
6 (K20)
|
6
|
BU/GY
|
CHECK GEARBOX
|
In
|
|
On
|
6-B-
|
0 V
|
|
|
Out
|
6-B-
|
B+
|
|||||||
|
7 (K20)
|
7
|
BU/YE
|
SHIFT UP
|
In
|
|
On
|
7-B-
|
0 V
|
|
|
Out
|
7-B-
|
B+
|
|||||||
|
8 (K20)
|
8
|
YE/GN
|
CHECK ENGINE
|
In
|
|
On
|
8-B-
|
0 V
|
|
|
Out
|
8-B-
|
B+
|
|||||||
|
9 (K20)
|
9
|
GY/RD
|
Lights-on indicator lamp
|
In
|
|
On
|
9-B-
|
B+
|
|
|
Out
|
9-B-
|
0 V
|
|||||||
|
10 (K20)
|
10
|
GN/GY
|
ABS warning lamp
|
In
|
|
On
|
10-B-
|
0 V
|
|
|
Out
|
10-B-
|
B+
|
|||||||
|
11 (K20)
|
11
|
RD/BK
|
Warning lamp, handbrake
|
In
|
|
On
|
11-B-
|
0 V
|
|
|
Out
|
11-B-
|
B+
|
|||||||
|
12 (K20)
|
12
|
BN/WH
|
Warning lamp, brake fluid level
|
In
|
|
On
|
12-B-
|
0 V
|
|
|
Out
|
12-B-
|
B+
|
|||||||
|
13 (K20)
|
13
|
|
No connection
|
|
|
|
|
|
|
|
14 (K20)
|
14
|
|
No connection
|
|
|
|
|
|
|
|
15 (K20)
|
15
|
GY
|
Main beam indicator lamp
|
In
|
|
On
|
15-B-
|
B+
|
|
|
Out
|
15-B-
|
0 V
|
|||||||
|
16 (K20)
|
16
|
|
No connection
|
|
|
|
|
|
|
|
17 (K20)
|
17
|
|
No connection
|
|
|
|
|
|
|
|
18 (K20)
|
18
|
RD/WH
|
WINTER
|
In
|
|
On
|
18-B-
|
0 V
|
|
|
Out
|
18-B-
|
B+
|
|||||||
|
19 (K20)
|
19
|
GN/WH
|
SPORT
|
In
|
|
On
|
19-B-
|
0 V
|
|
|
Out
|
19-B-
|
B+
|
|||||||
|
20 (K20)
|
20
|
|
No connection
|
|
|
|
|
|
> = greater than; < = less than; ~ = alternating current (LP: LOGIC PROBE P = select pulse; p = visible pulse)
| K22 |
|
Pin
|
Pin BOB
|
Lead colour
|
Component/
Function |
In/Out
|
Test conditions
|
|
Across
|
Test reading
|
See
|
|
1 (K22)
|
33
|
|
No connection
|
|
|
|
|
|
|
|
2 (K22)
|
34
|
VT/WH
|
Selector lever position sensor A
|
In
|
P, R, 3, 2
|
|
2-B-
|
B+
|
|
|
P, 2, 1
|
|
2-B-
|
0 V
|
||||||
|
3 (K22)
|
35
|
GN
|
Selector lever position sensor B
|
In
|
P, R, 3, 2
|
|
3-B-
|
B+
|
|
|
P, 2, 1
|
|
3-B-
|
0 V
|
||||||
|
4 (K22)
|
36
|
GY
|
Selector lever position sensor C
|
In
|
P, R, 3, 2
|
|
4-B-
|
B+
|
|
|
P, 2, 1
|
|
4-B-
|
0 V
|
||||||
|
5 (K22)
|
37
|
WH/YE
|
Selector lever position sensor PA
|
In
|
P, R, 3, 2
|
|
5-B-
|
B+
|
|
|
P, 2, 1
|
|
5-B-
|
0 V
|
||||||
|
6 (K22)
|
38
|
BK
|
Turbo pressure ground
|
Out
|
Ignition ON
|
|
38-B-
|
<0.1 V
|
|
|
7 (K22)
|
39
|
YE/GY
|
Coolant temperature ground
|
Out
|
Ignition ON
|
|
39-B-
|
<0.1 V
|
|
|
8 (K22)
|
40
|
RD/WH
|
A/C relay
|
In
|
Engine idling A/C ON
|
|
40-B-
|
0 V
|
|
|
A/C OFF
|
|
40-22
|
B+
|
||||||
|
9 (K22)
|
41
|
GN/GY
|
A/C out
|
Out
|
Engine idling A/C ON
|
|
41-22
|
approx. 10 V
|
|
|
A/C OFF
|
|
41-22
|
approx. 1 V
|
||||||
|
10 (K22)
|
42
|
GN/BK
|
Idle speed compensation signal
|
Out
|
Fan ON
|
|
42-B-
|
0 V
|
|
|
Fan OFF
|
|
B+
|
|||||||
|
11 (K22)
|
43
|
GN
|
Fuel contents signal
|
In
|
Idling
|
|
43-B-
|
7.5 Hz
2-4 ms (-) (HI LOp) |
|
|
12 (K22)
|
44
|
GN/RD
|
Engine speed signal
|
In
|
900±50 rpm
|
44-B-
|
30 Hz
(LP LO HI) |
|
|
|
13 (K22)
|
45
|
YE
|
Low fuel level (OBDII)
|
Out
|
More than 10 litres in tank (fuel reserve indicator lamp out)
|
45-22
|
approx. B+
|
|
|
|
Less than 10 litres in tank (fuel reserve indicator lamp on)
|
45-22
|
0 V
|
|||||||
|
14 (K22)
|
46
|
PK
|
Turbo pressure signal
|
In
|
Idling
|
|
46-22
|
approx. 0.5 V
|
|
|
|
|
46-22
|
approx. 1.0 V
|
||||||
|
15 (K22)
|
47
|
YE/BN
|
Coolant temperature
|
In
|
Temp 20
°
C
Temp 80 ° C Temp 100 ° C |
|
47-22
|
3.8 V
1.5 V 1.0 V |
|
|
16 (K22)
|
48
|
YE/BU
|
Data link K
|
In/Out
|
|
48-22
|
0
|
|
|
|
With Tech 2 communication
|
|
48-22
|
B+
|
|
|||||
|
17 (K22)
|
49
|
BN/GY
|
Cruise indicator lamp
|
In
|
|
On
|
49-22
|
B+
|
|
|
Out
|
49-22
|
0 V
|
|||||||
|
18 (K22)
|
50
|
YE/GY
|
Tank venting diagnosis, signal (SID message)
|
In
|
Tank venting OK
|
50-22
|
B+
|
|
|
|
Tank venting not OK
|
50-22
|
0 V
|
|||||||
|
19 (K22)
|
51
|
|
No connection
|
|
|
|
|
|
|
|
20 (K22)
|
52
|
|
No connection
|
|
|
|
|
|
|
|
21 (K22)
|
53
|
|
No connection
|
|
|
|
|
|
|
|
22 (K22)
|
54
|
GY/BK
|
Diagnostics communication MIU/engine management system
|
In/Out
|
|
|
22-B-
|
B+
|
|
|
With Tech 2 communication
|
|
22-B-
|
approx. 10 V
|
> = greater than; < = less than; ~ = alternating current (LP: LOGIC PROBE P = select pulse; p = visible pulse)
This project is supported by memberships and donations. If you use this site, please consider Joining SCNA and/or making a donation.
Our Friends
