Test readings, control module connections
| Test readings, control module connections |
| Scope |
The following pages contain specified values and directions for measuring signals and levels on the automatic transmission control module.
| Points to remember: |
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Observe the test conditions, use your common sense when judging the readings obtained.
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The specified values are with the ignition in position ON unless stated otherwise.
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First check that the control module is supplied with current and grounded.
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Then check all sensor inputs and signals from other systems.
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Finally, check the control module inputs. Remember that the test readings do not indicate whether or not the actuator is in working order.
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If any reading is not OK, consult the wiring diagram to trace the leads, connectors or components which ought to be checked more thoroughly.
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The specified test readings refer to those obtained with a calibrated Fluke 88/97.
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Test readings %(+) and ms(+) indicate the signal's pulse ratio and pulse duration. A test instrument capable of measuring pulse ratio and pulse width must be used. The sign denotes a positive trigger pulse, TRIG+.
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| Configuration |
|
Pin
|
Cable colour
|
Component/ Function
|
In/Out
|
Test conditions
|
Test between
|
Test reading
|
See
|
|
1
|
GN
|
Bus+
|
In
|
Ignition ON
|
1-42
|
approx. 2.5 V
|
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2
|
BN
|
Gear selector position sensor, pin A
|
In Ignition ON Selector lever P, R, 3, 2 Selector lever N, D, 1
|
Ignition ON 2-42
Activate with diagnostics instrument SOLENOID LOCK-UP |
2-42
|
B+ 0V
|
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3
|
OG/WH
|
Gear selector position sensor, pin C
|
In
|
Ignition ON Selector lever D, 3, 2, 1 Selector lever P, R, N
|
3-42
|
B+ 0 V
|
|
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4
|
No connection
|
||||||
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5
|
No connection
|
||||||
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6
|
No connection
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|||||
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7
|
No connection
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8
|
No connection
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||||||
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9
|
WH
|
Inductive sensor, input speed
|
In
|
Ignition ON
|
9-32
|
approx. 2.5 V
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10
|
GN/RD
|
Inductive sensor, output speed
|
In
|
Raise the car, engage 1st gear and run the engine at 20 km/h*
|
10-31
|
0.9 V 140 Hz
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11
|
No connection
|
||||||
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12
|
No connection
|
||||||
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13
|
GNNTC sensor for fluid temperature
|
Gear selector position sensor, pin A
|
In Ignition ON 20°C 50°C 80°C
|
Ignition ON
Selector lever P, R, 3, 2 Selector lever N, D, 1 |
13-42
|
2.3 V 1.7 V 1.0 V
|
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14
|
No connection
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||||||
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15
|
GN
|
Switch, WINTER
|
In
|
Ignition ON Switch depressed Switch not activated
|
15-42
|
0 V B+
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16
|
No connection
|
||||||
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17
|
WH/GN
|
Solenoid 1-2/3-4 (S1)
|
Out
|
Ignition on Gear D Winter mode ON Winter mode OFF
|
17-42
|
B+ 0 V
|
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18
|
No connection
|
||||||
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19
|
WH/GN
|
Solenoid, Lock-up (SL)
|
Out
|
Ignition ON Activate SOLENOID LOCK UP with diagnostics tool
|
19-42
|
ON =B+ OFF=0 V
|
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20
|
20 RD
|
Battery voltage (+30 circuit)
|
In
|
Ignition ON/OFF
|
20-B+
|
< 0.5 V
|
|
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21
|
BU/RD
|
Battery voltage (+15 circuit)
|
In
|
Ignition ON
|
21-B+
|
< 0.5 V
|
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22
|
WH
|
Bus
|
In/Out
|
Ignition ON
|
22-42
|
approx. 2.5 V
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23
|
No connection
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||||||
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24
|
VT
|
Gear selector position sensor, pin B
|
In
|
Ignition ON Selector lever R, N, D, 3 Selector lever P, 2, 1
|
24-42
|
B+ 0 V
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25
|
GY
|
Gear selector position sensor, pin PA
|
In
|
Ignition ON Selector lever P, N, 3, 1 Selector lever R, D, 2
|
25-42
|
B+ 0 V
|
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26
|
No connection
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27
|
No connection
|
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28
|
No connection
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29
|
No connection
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30
|
PK
|
Ground, signal ground for inductive sensor
|
In
|
Ignition ON
|
30-B-
|
< 0.1 V
|
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31
|
PK
|
Ground, signal ground for inductive sensor
|
In
|
Ignition ON
|
31-B-
|
< 0.1 V
|
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32
|
No connection
|
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33
|
No connection
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34
|
No connection
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35
|
BU
|
Switch, SPORT
|
In
|
Ignition ON Switch depressed Switch not activated
|
35-42
|
0 V B+
|
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36
|
No connection
|
||||||
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37
|
No connection
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38
|
WH/BK
|
Solenoid, pressure control (ST) Ground
|
In
|
Ignition ON
|
38-42
|
0.9 V approx. 300 Hz
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|
39
|
WH/YE
|
Solenoid 2-3 (S2)
|
Out
|
Ignition on Gear D Winter mode ON Winter mode OFF
|
39-42
|
0V B+
|
|
|
40
|
WH/YR
|
Solenoid, pressure control (ST) Power supply
|
Out
|
Ignition ON
|
40-42
|
5V approx. 300 Hz
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41
|
BK
|
Ground
|
In
|
Ignition ON
|
41-Good ground
|
< 0.1 V
|
|
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42
|
BK
|
Ground
|
In
|
Ignition ON
|
42-Good ground
|
< 0.1 V
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*A vehicle speed reading can be obtained with the diagnostics instrument, command menu "Read functions" and "Output speed”.
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