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Transmission
B14
Output speed sensor (+)
B15
Not used
B16
Input speed sensor (+)
B17
Not used
B18
Not used
B19
'PA'signal NSW
B20
'C'signal NSW
B21
Manual gear up (TAP-UP)
B22
Sports mode (S)
B23
Not used
B24
Not used
B25
Not used
B26
Not used
Neutral Start SwitchNSW
The neutral start switch is located on the selector shaft on
top of the transmission. The TCM is provided with a voltage
output from the inhibitor switch that informs the TCM which
gear position the driver has selected.
Version 2.0
The TCM determines the position of the selector lever by
monitoring seven sets of contacts in the inhibitor switch
which are operated by the selector shaft. Each set of contacts
corresponds to one of the seven selector lever positions.
Only one set of contacts will supply battery voltage to the
TCM at any one time. The TCM monitors the switch output.
The electrical input to the inhibitor switch is provided by fuse
4 of the engine compartment fuse box.
Speed Sensors
The TCM sets correct gear change scheduling using three
speed signal inputs:
• input speed
• output speed
• vehicle speed
The gearbox sensors are Hall Effect types producing square
wave signals which are interpreted by the TCM as speed.
Vehicle speed data is collected by the TCM from a signal
generated by the Anti-lock Brake System (ABS) control
module over the CAN Bus.
Input Speed Sensor
The reluctor ring, formed on the outer casing of the forward
clutch, rotates as the input shaft is driven by the torque
converter. Each time a tooth passes the input sensor, a signal
is generated and sent to the TCM.
Transmission-AT
368
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