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: |
| • |
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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| Table, connector A |
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Pin, connector
A
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Cable colour
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Component/ Function
|
In/Out
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Test conditions
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Test between
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Test reading
|
See
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1
|
no connection
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||||||
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2
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no connection
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3
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no connection
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4
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no connection
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||||||
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5
|
no connection
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||||||
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6
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no connection
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||||||
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7
|
OG/WH
|
WINTER mode switch
|
In
|
7-23
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ON=B+
OFF=0 V |
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8
|
No connection
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9
|
No connection
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10
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No connection
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11
|
No connection
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12
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No connection
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13
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No connection
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14
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No connection
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15
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No connection
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||||||
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16
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No connection
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||||||
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17
|
BU
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SPORT mode switch
|
In
|
||||
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18
|
No connection
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||||||
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19
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No connection
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||||||
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20
|
No connection
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||||||
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21
|
No connection
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||||||
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22
|
RD/BU
|
Battery voltage (+15 circuit)
|
In
|
Ignition ON
|
|||
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23
|
BK
|
Ground
|
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|||
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24
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No connection
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||||||
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25
|
GN
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Bus +
lead 1 |
in/out
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26
|
WH
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Bus -
lead 1 |
in/out
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27
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No connection
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28
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No connection
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||||||
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29
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No connection
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||||||
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30
|
No connection
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||||||
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31
|
RD/BU
|
Battery voltage (+15 circuit)
|
In
|
Ignition ON
|
|||
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32
|
BK
|
Ground
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|||||
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33
|
RD
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Battery voltage (+30 circuit)
|
In
|
||||
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34
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No connection
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||||||
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35
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No connection
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36
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No connection
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37
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No connection
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38
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No connection
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*A vehicle speed reading can be obtained with the diagnostics instrument, command menu "Read functions" and "Output speed”.
Table, connector B
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Pin, connector
B
|
Cable colour
|
Component/ Function
|
In/Out
|
Test conditions
|
Test between
|
Test reading
|
See
|
|
1
|
no connection
|
||||||
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2
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no connection
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||||||
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3
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no connection
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||||||
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4
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no connection
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5
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no connection
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||||||
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6
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BN/WM
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Selector lever, position A
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In
|
Ignition ON
Signal grounded in positions P, R, 4 and 3 |
6 - 23
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Selector lever position P, R, 4, 3: 0-0.5 V
Other positions: 0-2 V |
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7
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OG/WH
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Selector lever, position C
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In
|
Ignition ON
Signal grounded in positions D, 4, 3 and L |
7-23
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Selector lever position: D, 4, 3, L: 0-0.5 V
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8
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BU/WH
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Solenoid S3
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Out
|
Solenoid supplied with voltage when activated by the TCM for 1st, 2nd and 3rd gears
|
Signal activated: 0-2 V
Not activated: Low |
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9
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No connection
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10
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No connection
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11
|
No connection
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||||||
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12
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BK/WH
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Lock-up solenoid, SLU ground
|
In
|
Signal = Low
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13
|
GN/WH
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Solenoid S5
|
Out
|
Ignition ON
Solenoid supplied with voltage when activated by the TCM for reverse and for changing between 2nd and 3rd gears |
Activated: 0-2 V
Not activated: Low |
||
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14
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GN/WH
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Solenoid S4
|
Out
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Ignition ON
Solenoid supplied with voltage when activated by the TCM for 3rd, 4th and 5th gears |
Activated: 0-2 V
Not activated: Low |
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15
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BK/WH
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System pressure solenoid, SLT ground
|
In
|
Signal = Low
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16
|
VT
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Selector lever, position B
|
In
|
Ignition ON
Signal grounded in positions R, N, D and 3 |
16 - 23
|
Selector lever position R, N, D, 3: 0-0.5 V
Other positions: 0-2 V |
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17
|
GY
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Selector lever, position PA
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In
|
Ignition ON
Signal grounded in positions P, N, 4, and L |
17 - 23
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Selector lever position P, N, 4, L: 0-0.5 V
Other positions: 0-2 V |
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18
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No connection
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19
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No connection
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20
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No connection
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21
|
GN
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Fluid temperature +
|
Out
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Voltage decreases as temperature increases
|
Cold transmission (+20°C): 3.4 V ±10%
Warm transmission (100°C): 0.7 V ± 10% |
||
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22
|
WH/PK
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Sensor, input shaft speed signal
|
In
|
When the toothed wheel rotates, the sensor generates a square wave signal. The frequency increases with speed.
|
Tooth aligned with sensor: 14 mA
Gap aligned with sensor: 7 mA |
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23
|
PK
|
Sensor, output shaft speed signal
|
In
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When the toothed wheel rotates, the sensor generates a square wave signal. The frequency increases with speed.
|
Tooth aligned with sensor: 14 mA
Gap aligned with sensor: 7 mA |
||
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24
|
BU/WH
|
Solenoid S2
|
Out
|
Ignition ON
Solenoid supplied with voltage when activated by the TCM for 1st and 5th gears |
Activated: 0-2 V
Not activated = Low |
||
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25
|
BU/WH
|
Lock-up solenoid, SLU +
|
Out
|
Solenoid supplied with voltage when activated by the TCM
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PWM = 300 Hz. The frequency remains constant irrespective of driving conditions. It is the signal's "duty cycle" that changes with changes in system pressure.
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26
|
BU/WH
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Clutch system pressure solenoid, SLS +
|
Out
|
Solenoid supplied with voltage when activated by the TCM
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PWM = 300 Hz. The frequency remains constant irrespective of driving conditions. It is the signal's "duty cycle" that changes with changes in system pressure.
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27
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No connection
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28
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No connection
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29
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No connection
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30
|
No connection
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31
|
WH/PK
|
Fluid temperature sensor, ground
|
In
|
Signal = Low
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32
|
WH
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Sensor, input shaft speed, power supply
|
In
|
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Signal = B+
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33
|
RD/GN
|
Sensor, output shaft speed, power supply
|
In
|
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Signal = B+
|
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34
|
GN/WH
|
Solenoid S1
|
Out
|
Ignition ON
Solenoid supplied with voltage when activated by the TCM for 1st gear |
Activated: 0-2 V
Not activated: Low |
||
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35
|
BU/WH
|
System pressure solenoid, SLT +
|
Out
|
Solenoid supplied with voltage when activated by the TCM
|
PWM = 300 Hz. The frequency remains constant irrespective of driving conditions. It is the signal's "duty cycle" that changes with changes in system pressure.
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36
|
BK/WH
|
Clutch system pressure solenoid, SLS ground
|
In
|
Signal = Low
|
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37
|
No connection
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||||||
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38
|
No connection
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