Gear selector position sensor - gear engaged
| Gear selector position sensor - gear engaged |
The gear selector position sensor is mounted in the gearbox casing. It contains the reversing light switch, starting interlock switch and switches which tell the control module which gear is engaged.
The gear selector position sensor is basically a positional switch that is supplied with current via the +X circuit and in which a number of slip contacts indicate the selector position. Different combinations of the terminals A, B, C and PA indicate the selector lever position (see table). The slip contacts can be either closed (ON) or open (OFF).
Incorrect decoding of the slip contacts will cause limp-home to activate.
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|
A
|
B
|
C
|
PA
|
|
P
|
ON
|
OFF
|
OFF
|
ON
|
|
R
|
ON
|
ON
|
OFF
|
OFF
|
|
N
|
OFF
|
ON
|
OFF
|
ON
|
|
D
|
OFF
|
ON
|
ON
|
OFF
|
|
3
|
ON
|
ON
|
ON
|
ON
|
|
2
|
ON
|
OFF
|
ON
|
OFF
|
|
1
|
OFF
|
OFF
|
ON
|
ON
|
The following table shows the relationship between the gear selector position sensor's internal terminals A, B, C and PA and the pins of connector H10-1 and those of the control module.
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Gear selector position sensor terminals
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A
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B
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C
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PA
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|
Connector H10-1, pin
|
1
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2
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3
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4
|
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Transmission control module, pin
|
9
|
10
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28
|
27
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