Table 63
Troubleshooting Test Steps
Values Results
1. Check for Active Diagnostic Trouble Codes
A. Turn the keyswitch to the ON position.
B. Connect the electronic service tool.
Check for active diagnostic trouble codes.
Result: A 3719-xx (E995) code is active.
Proceed to Test Step 2.
Result: A 7440-31 E1645 code is active.
Proceed to Test Step 6.
Result: A code other than the codes listed in Table 61 is
active.
Repair: Diagnose and rectify the fault before continuing
with this procedure. Refer to Troubleshooting, “Diagnos-
tic Trouble Codes”.
2. Visually Inspect the Soot Sensor System
A. Inspect the coaxial cables between the soot sensor and the an-
tennas for damage.
B. Make sure that the antenna connectors are correctly tightened
to 1.2 N·m (10.6 lb in).
Soot sensor Result: The soot sensor cables are damaged.
Repair: Replace the soot sensor.
Proceed to Test Step 3.
Result: Other corrective actions were performed.
Start the engine and then use the electronic service tool
to perform the “Aftertreatment Regeneration System
Test” .
Stop the engine and then check for a 3719 (E995) code.
If the 3719 (E995) code has been eliminated, proceed to
Test Step 9.
If the 3719 (E995) code is still present, proceed to Test
Step 3.
Result: No corrective actions were performed.
Proceed to Test Step 3.
(continued)
UENR4469-36 127
Symptom Troubleshooting
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