Electronic Control Unit Block Diagram - Allison MD 3060 Troubleshooting Manual

W T E C I I E L E C T RO N I C C O N T RO L S T RO U B L E S H O OT I N G M A N UA L
MD/B 300/B 400
RETARDER CONNECTOR
(INCLUDES OUTPUT
SPEED SENSOR)
MD 3070
TRANSFER CASE
CONNECTOR
HD/B 500
RETARDER
TEMPERATURE
SENSOR
CONNECTOR
HD/MD/B RETARDER
ACCUMULATOR "H"
SOLENOID
CONNECTOR
OUTPUT SPEED
SENSOR
TRANSMISSION
*CONNECTOR
CONNECTOR
ENGINE
SPEED
SENSOR
CONNECTOR
NOTE: Illustration is not to scale.
*All HD/B 500 models
All Non-Retarder MD/B 300/B 400 models
Figure 1–2. WT Electronic Control Unit Components (Units Produced 9/94–12/97)
Figure 1–3 is a block diagram of the basic system's inputs and outputs.
SPEED SENSORS
THROTTLE POSITION SENSOR
RETARDER MODULATION
1–2
GENERAL DESCRIPTION
VEHICLE
INTERFACE
MODULE
(VIM)
VEHICLE
INTERFACE
WIRING
(VIW)
CONNECTOR
OPTIONAL
BULKHEAD
CONNECTOR
HARNESS
TURBINE
SPEED
SENSOR
RETARDER "K"
CONNECTOR
CONNECTOR
(HD/B 500)
(HD/B 500)
SHIFT SELECTOR
RANGE AND
MODE SWITCH
ECU
VIM
INPUTS OUTPUTS
Figure 1–3. Electronic Control Unit Block Diagram
Copyright © 1998 General Motors Corp.
INTEGRAL ECU/
SHIFT SELECTORS
REMOTE
ECU
RETARDER
MODULATION
REQUEST (RMR)
SENSOR CONNECTOR
REMOTE SERIAL
WIRING INTERFACE
CONNECTOR
TPS
CONNECTOR
THROTTLE
POSITION
SENSOR
TONE/DISPLAY
OIL LEVEL SENSOR
SOLENOIDS
C3 PRESSURE SWITCH
TEMPERATURE SENSOR
(SUMP/RETARDER)
ELECTRONIC
CONTROL
UNIT
(ECU)
CONNECTORS
DIAGNOSTIC
DATA READER (DDR)
CONNECTOR
PRO-LINK
DIAGNOSTIC TOOL
J 38538-A
OPTIONAL
DEUTSCH DDR
CONNECTOR
REMOTE
LEVER SHIFT
SELECTOR
REMOTE
PUSHBUTTON SHIFT
SELECTOR
STRIP PUSHBUTTON
SHIFT SELECTOR
V01812
®
V01587