Ford TRADER Workshop Manual page 342

Terminal
Color of
wire
A SR
B R/L
C
-
0
UY
E
0
F
SlY, UW'
H B
I
GIY
J
-
K
RIBR
Connector
EXHAUST CONTROLLED HEATING SYSTEM
F3
Connected to
Exhaust heating
switch
Clutch switch
-
Neutral switch
Exhaust brake
switch
Exhaust brake
switch
Exhaust heating
switch
Ground
Magnetic valve
(for exhaust
shutter valve)
-
Solenoid valve
(Intake shutter
valve)
EXHAUST HEATING CONTROL UNIT
Inspection
1. Measure the terminal voltage of the exhaust heating con-
trol unit when the vacuum switch connector disconnected.
2. If not as specified, repair the wire harness or replace the
control unit.
9TGOF3·066
Conditions of measuring
Voltage Possible cause
(engine sw ON)
Exhaust heating switch OFF Approx.12V Exhaust heating switch
Exhaust heating switch ON Approx.OV
(Refer to page F3-42)
Wire harness
Accelerator and clutch pedal Approx.OV Cluten switen
released (Refer to page F3-43)
Accelerator or clutch pedal Approx.OV
Accelerator switch
depressed
(Refer to page F3-42)
Wire harness
-
- -
Neutral
Approx. 12V
Neutral switch
In gear Approx.OV
(Refer to page F3-43)
Wire harness
Exhaust brake switch OFF Approx. 12V Exhaust brake switch
Exhaust brake switch ON Approx.OV
(Refer to page F3-44)
Wire harness
Constant Approx. 12V Exhaust brake switch
(Refer to page F3-44)
Exhaust heating switch
(Refer to page F3-42)
Wire harness
Constant Approx.OV Wire harness
• Accelerator and clutch pedal Less than Magnetic valve
released approx.2V
(Refer to page F3-39)
• Exhaust heating switch ON Wire harness
• Accelerator and clutch pedal
Less than
released approx.1V
• Neutral
• Exhaust brake switch ON
Except above conditions Approx. 12V
-
-
-
• Accelerator pedal depressed Less than Solenoid valve
less than half or clutch pedal
approx. 1V.
(Refer to page F3-40)
depressed or both depressed Wire harness
• Exhaust heating switch ON
Except above conditions
Approx.12V
K I
E
C
A
I~ ~~~ ~
#1
L J H F 0
B
•.... Pay load above 3.5t only
9TGOF3-089
F3-37