Troubleshooting

206 RENR2696-01
Troubleshooting Section
Test Step 2. Check “Set Speed Switch”
on the Electronic Service Tool
A. Turn the keyswitch to the OFF position.
B. Connect the el
ectronic service tool to the
diagnostic connector.
C. Turn the keysw
itch to the ON position.
D. Observe the status of the set speed switch on
the electron
ic service tool while you operate the
set speed switch from the speed 1 position to the
speed 2 position.
E. Observethestatusofthesetspeedswitchonthe
electronic service tool while you operate the set
speed switch
from the ON position to the OFF
position.
F. Observe the s
tatus of the set speed switch while
you operate the set speed/decelerate switch from
the OFF position to the ON position.
G. Observe the status of the set speed control
resume or accelerate switch while you operate the
switch from
the OFF position to the ON position.
Expected Result:
Result 1 the electronic service tool will show that the
speed 1 status is selected with the set speed switch
in the OFF p
osition.
The electronic service tool will show that the speed
2statusis
selected with the set speed switch in the
ON position.
Note: If th
e engine application has two engine speed
controls ensure that speed 1 is selected.
Result 2 Th
e electronic service tool will show that the
set speed control switch is in the “OPEN” condition
when the set speed control switch is in the OFF
position
.
The electronic service tool will show that the set
speed swi
tchisinthe“CLOSED”positionwhenthe
set speed switch is in the ON position.
Note: Th
e set speed control lamp should be OFF
when the set speed control switch is in the OFF
position. The set speed control lamp should be
flashin
g when the set speed control switch is in the
ON position.
Result 3
When the set speed switch is in the OFF
position the set speed/decelerate switch should be in
the OPEN position.
When the set speed/decelerate switch is in the ON
position the se
t speed/decelerate switch should be
in the CLOSED position.
Result 4 When t
he set speed control resume or
accelerate switch is in the OFF position the display
screen should show an OPEN condition.
When the set speed control resume or accelerate
switch is in the ON position the display screen should
show a CLOSED
condition.
Note: The set speed control lamp 1 should change
from flashin
g to ON when the set speed resume or
accelerate switch is CLOSED.
Results:
•
OK – The set speed control switches operate
correctly. S
TOP.
•
Not OK – Proceed to Test Step 3.