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
1–8
Copyright © 1998 General Motors Corp.
GENERAL DESCRIPTION
Figure 1–11. WTEC II External Wiring Harness (Units Produced 9/94–12/97)
B.
Internal Wiring Harness
(Figures 1–12, 1–13, and 1–14)
The internal wiring harness provides connection between the external harness, the pulse width
modulated solenoids, oil level sensor, C3 pressure switch, and the temperature sensor.
Figure 1–12. WTEC II Internal Wiring Harness (Units Produced Before 9/94)
OPTIONAL
DEUTSCH DDR
CONNECTOR
ELECTRONIC
CONTROL
UNIT
(ECU)
CONNECTORS
MD/B 300/B 400
RETARDER CONNECTOR
(INCLUDES OUTPUT
SPEED SENSOR)
MD 3070
TRANSFER CASE
CONNECTOR
OUTPUT SPEED
SENSOR
*CONNECTOR
TRANSMISSION
CONNECTOR
ENGINE SPEED
SENSOR CONNECTOR
V01592
TPS
CONNECTOR
TURBINE
SPEED
SENSOR
CONNECTOR
(HD/B 500)
REMOTE SERIAL
INTERFACE
CONNECTOR
RETARDER “K”
CONNECTOR
(HD/B 500)
HD/MD/B RETARDER
ACCUMULATOR “H”
SOLENOID
CONNECTOR
OPTIONAL
BULKHEAD
CONNECTOR
WIRING
HARNESS
NOTE: Illustration is not to scale.
*All HD/B 500 models
All Non-Retarder MD/B 300/B 400 models
VEHICLE
INTERFACE
MODULE
(VIM)
CONNECTOR
RETARDER
MODULATION
REQUEST (RMR)
SENSOR CONNECTOR
DIAGNOSTIC
DATA READER (DDR)
CONNECTOR
VEHICLE
INTERFACE
WIRING
(VIW)
CONNECTOR
HD/B 500
RETARDER
TEMPERATURE
SENSOR
CONNECTOR
FEEDTHROUGH
CONNECTOR
STANDOFF SPACER
HD/B 500
V01642
FORWARD SOLENOID
C2 SOLENOID (B)
LU SOLENOID (F)
C1 SOLENOID (A)
C5 SOLENOID (E)
C3 SOLENOID (C)
MD OIL LEVEL SENSOR
C3 PRESSURE SWITCH
TEMPERATURE SENSOR
HD OIL LEVEL SENSOR
TURBINE SPEED SENSOR
MD/B 300/B 400
(OMITTED IN HD/B 500)
C4 SOLENOID (D)
MD 3070 C6 SOLENOID (J)
MD 3070 LO SIGNAL (N)
