Table 186
Troubleshooting Test Steps
Values Results
1. Check for Active Diagnostic Codes and/or Recently
Logged Diagnostic Codes
A. Connect the electronic service tool to the diagnostic
connector.
B. Turn the keyswitch to the ON position.
C. Monitor the active diagnostic code screen on the electronic
service tool. Check and record any active diagnostic codes.
Note: Wait at least 30 seconds in order for the diagnostic codes
to become active.
Note: A diagnostic code that is logged several times is an indi-
cation of an intermittent problem. Most intermittent problems
are a poor connection in a connector.
Diagnostic codes Result: No diagnostic codes are active - the problem
may have been intermittent.
Repair: Carefully inspect the connectors and wiring.
Refer to Troubleshooting, “Electrical Connectors -
Inspect”.
Result: One of the diagnostic codes listed in Table 185
is active or recently logged at this time.
Proceed to Test Step 2.
2. Check the Operation of the IVS
A. Connect the electronic service tool to the diagnostic
connector.
B. Turn the keyswitch to the ON position.
Note: Do not start the engine.
C. Use the electronic service tool in order to check the current
“Throttle Configuration” .
D. Select the “SERVICE” option from the drop-down menu of
the electronic service tool.
E. Select the “Throttle Configuration” option on the electronic
service tool. Select the appropriate “Throttle Configuration”
summary from the menu on the left of the screen. The IVS win-
dow for the throttle will indicate “YES” if an IVS is installed.
F. Select the “Throttle status” function on the electronic service
tool. Select “Status” function and then select “Throttles”
function.
G. The throttle is set in the low idle position.
H. Operate the throttle slowly. The IVS status should change
from CLOSED (ON) to OPEN (OFF).
IVS status change Result: The IVS state changes from CLOSED (ON) to
OPEN (OFF)
Proceed to Test Step 3.
Result: The IVS state does not change.
Proceed to Test Step 4.
(continued)
UENR4469-36 337
Circuit Tests
Copyright of Perkins Engine Company Limited. NOT FOR REPRINTING OR RESALE
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