Spicer CTIS (Central Tire Inflation System) Troubleshooting Guide - Manual (Page 69)

66
Wire Harness
Electrical Schematics
Chassis ECU with DDM (all Power Switched) Wiring Diagram
DRIVER
DISPLAY
MODULE
7
6
4
5
2
1
3
COMM (+)
COMM (-)
GROUND
SWIGN
DIM/BLACK
LOAD
TERRAIN
TERRAIN
SWITCH
DRIVER
INTERFACE
2B
3
1
7
8
10
9
TERRAIN
GROUND
SWIGN
DIM/BLACK
*DIM/BLACK
*GROUND
*GROUND
LOAD
SWITCH
2B
3
1
7
8
10
9
LOAD
GROUND
SWIGN
DIM/BLACK
*DIM/BLACK
*GROUND
*GROUND
ECU CONNECTOR
CONDITIONED SPEED INPUT
* Connections to pins 8, 9, and 10 are made internally. Earlier versions of
the switches required these connections to be made in the harness.
COND SPEED
COND SPEED
G3
F1
BUZZER D3
PRESS SW
BUZZER
PRESS SW
CONFIGURATION SELECTION
G1 CONFIG 1
CONFIG 1 B (Jumper plug may tie each config line
to POWER or GROUND to select config.
See configuration page for details.)
K3
J3
COMM (+)
COMM (-)
Note: Wire per SAE-J1708.
J1939 and J1708/J1587
COMMUNICATIONS
A2 J1939 (-)
A1 J1939 (+)
J1939 (+) C
J1939 (-) D Note: Wire per SAE-J1939.
FUSE
VEHICLE POWER PANEL
+VBATT
POWER IGNITION
SWITCH
K2 GROUND
K1 POWER
GROUND
PRESSURE SWITCH INPUT
BLACKOUT or DIMMER
SWITCHED IGNITION
(12V / 24V)
G2 CONFIG 2
CONFIG 2 D
POWER C
GROUND A
POWER B
GROUND A
C2 J1708 B
C1 J1708 A
J1708 A F
J1708 B G Note: Wire per SAE-J1708.
(9-pin diagnostic connector)
GROUND
BUZZER OUTPUT
(battery voltage)
GROUND
SWIGN
DIM/BLACK
(12V / 24V)
(+VBATT = normal
GROUND = blackout)
XDCR COMMON
XDCR SIGNAL
XDCR VREF
XDCR COMMON
XDCR SIGNAL
XDCR VREF
2 - CHANNEL
PNEUMATIC CONTROLLER
E
C
PCU SENSOR
REAR SOL
FRONT SOL
B
C
A
B
SUPPLY SOL
DEFLATE SOL
CONTROL SOL
REAR SOL
FRONT SOL
SUPPLY SOL
GROUND
DEFLATE SOL
CONTROL SOL
DEFLATE
FRONT
REAR
SUPPLY
CONTROL
D
H3
H1
H2
D2
D1
B1
B2
B3
A
F
SPARE OUT
SPARE OUT
SPARE IN
SPARE IN
SPARE IN
E2
E1
J1
F2
F3
SPARE OUT
SPARE VREF
E3
H2