Table 234
Troubleshooting Test Steps
Values Results
1. Check the Air Filter Restriction Switch
A. Turn the keyswitch to OFF.
B. Disconnect the air filter restriction switch from the wiring
harness connector.
C. Install a jumper wire in the wiring harness connector be-
tween the signal and ground terminals.
D. Turn the keyswitch to ON.
E. Monitor the electronic service tool for active fault codes.
Diagnostic codes Results : There is not an active 107-3 or 582-3 diagnos-
tic code. A failed air filter restriction switch has been
detected.
Repair : Replace the air filter restriction switch.
Verify that the repairs eliminated the issue. Return the
machine to service.
Results : There is an active 107-3 or 582-3 diagnostic
code. An open circuit in the wiring harness has been
detected.
Repair : Repair or replace the wiring harness.
Verify that the repair has eliminated the issue.
If the fault is still present, contact the Dealer Solutions
Network (DSN).
i06177722
Valve Position - Test
This procedure covers the following diagnostic
codes:
Table 235
Diagnostic Codes for the Valve Position Sensors
J1939 Code PDL Code
Code Description
(code descriptions may vary)
Comments
27-3 3407-3
EGR #1 Valve Position : Voltage Above
Normal
The Electronic Control Module (ECM) detects the following
conditions:
The signal voltage from the position sensor on the NOx Reduc-
tion System (NRS) valve is greater than 4.8 VDC for 0.1
seconds.
The warning lamp will come on. The ECM will log the diagnos-
tic code. The NRS valve will be fully closed while the code is
active.
The engine will be derated.
27-4 3407-4
EGR #1 Valve Position : Voltage Below
Normal
The ECM detects the following conditions:
The signal voltage from the NRS valve position sensor is less
than 0.2 VDC for 0.1 seconds.
The warning lamp will come on. The ECM will log the diagnos-
tic code. The NRS valve will be fully closed while the code is
active.
The engine will be derated.
(continued)
UENR4469-36 443
Circuit Tests
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