Workshop

HYDRA-MATIC 6L80 (6 Speed)

ELECTRONIC COMPOMENTS (CONT'D)
ELECTRICAL
CONNECTOR
OUTPUT
SPEED
SENSOR
INPUT
SPEED
SENSOR
CBA
SPEED SENSOR TERMINAL IDENTIFICATION
Terminal
Number
A
B
C
Input Speed Sensor Signal
Supply Voltage From TCM
Output Speed Sensor Signal
Function
Speed Sensor
Connector
CONTROL SOLENOID BODY AND TCM ASSEMBLY
Internal
Mode Switch
Connector
Internal
Mode Switch
P/N Signal
Signal A
Signal B
Signal C
Signal P
Ignition Voltage
ABCDEF
Input Speed Sensor Signal
Output Speed Sensor Signal
Supply Voltage From TCM
2 Wire
Hall Effect
OSS
2 Wire
Hall Effect
ISS
CBA
A B C D E F
CBA
Figure 17
Figure 18
IMS AND SPEED SENSOR PARTIAL WIRE SCHEMATIC
TRANSMISSION SPEED SENSORS
Input Speed Sensor Assembly
Output Speed Sensor Assembly
The speed sensors are both 2 wire hall-effect type
sensors which bolt to the valve body assembly and
connect to the control solenoid body and TCM
assembly through a wire harness and connector, as
shown in Figure 17 and 18.
If the TCM detects an improper signal from the input
or output speed sensors, a DTC will be activated.
The input speed sensor faces the 1-2-3-4 and 3-5-R
clutch housing and is triggered by splines on the
housing outside diameter. The sensor receives 8.3-
9.3 volts from the TCM, and produces a signal
frequency based on the spline profile and rotation
speed of the 1-2-3-4 clutch housing. The TCM uses
this signal to determine line pressure, shift timing,
TCC slip speed and gear ratio.
The output speed sensor faces the output shaft
housing and is triggered by slots in the housing
outside diameter. The sensor receives 8.3-9.3 volts
from the TCM, and produces a signal frequency based
on the machined slots and rotation speed of the output
shaft housing. The TCM uses this signal to determine
line pressure, shift timing, vehicle speed and gear
ratio.
AUTOMATIC TRANSMISSION SERVICE GROUP
Technical Service Information
16
Copyright © 2007 ATSG
Copyright © 2007 ATSG

Leave a Reply

Your email address will not be published. Required fields are marked *