Check Active Regen Inhibitors - Navistar MaxxForce DT Diagnostic Manual

NOTE – Any active aftertreatment system fault code(s) may inhibit a Regen. Diagnose active fault
code(s), other than SPN 3719 (DPF Soot Load), before continuing (see Electronic Control Systems
Diagnostics" in Engine Diagnostic Manual).
1. Turn ignition switch to ON position, engine OFF.
2. Using ServiceMaxx™ software, load the Aftertreatment session.
3. Start engine and run vehicle speed above 5 mph.
4. Verify all listed inhibitors are displaying Not Inhibited.
Check
AFT Regen Inhibit
Status
Red Stop Alert Lamp
Regen Inhibit Switch
PTO Enable Switch
PTO Switch
If no inhibitors are active and Regen is needed, go to Parked Regen Checks (page 155).
Table 182 Check Active Regen Inhibitors
Expected Results Comment
Not Inhibited If inhibited, correct the cause. Check switches and any DTC
that may be causing the Regen inhibit.
Off If On, Regen can't be run. Go to appropriate aftertreatment
system diagnostics section in this manual.
Off If On, turn switch Off. If switch does not turn Off, then
diagnose circuit fault.
Off If On, turn switch Off. If switch does not turn Off, then
diagnose circuit fault.
Off If On, turn switch Off. If switch does not turn Off, then
diagnose circuit fault.
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DIAGNOSTIC MANUAL
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