Gear selector position sensor - gear engaged
| Gear selector position sensor - gear engaged |
The gear selector position sensor is mounted in the transmission casing. It contains the reversing light switch, starting interlock switch and switches which tell the control module which gear is engaged.
Principally, the gear selector position sensor is a position switch that is supplied with current via the +15 circuit. A number of slip contacts supply the sensor's outputs with current. Combinations of the A, B, C and PA terminals correspond to the current selector lever position (see table). The slip contacts may 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 transmission control module.
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Gear selector position sensor terminals
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A
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B
|
C
|
PA
|
|
Connector H10-1, pin
|
1
|
2
|
3
|
4
|
|
Control module, pin
|
13
|
28
|
14
|
29
|
To ensure that the control module receives accurate information, it is important for the sensor to be correctly adjusted. Special tool 8792467 should be used for adjusting the sensor.
Diagnostics
Faults on the gear position inputs will generate diagnostic trouble code P0705 and put the transmission in limp-home mode.This project is supported by memberships and donations. If you use this site, please consider Joining SCNA and/or making a donation.
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