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Cummins ISB6.7 CM2150 (2007-09) Fault Code: 556 (ISC/ISL) PID: 101 SPN: 101 FMI: 0 Crankcase Pressure – Data Valid but Above Normal Operational Range – Most Severe Level.

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Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe™ Online for applicable fixes to the calibration stored in the ECM. If necessary, calibrate the ECM. Use the following procedure in the corresponding Troubleshooting and Repair Manual for the engine being serviced.Possible causes: 1)Crankcase breather filter needs to be replaced2)Crankcase pressure sensor damage3)Plugged or restricted crankcase breather oil separator4)Plugged or restricted crankcase breather oil drain tube or check valve5)Plugged or restricted crankcase breather draft tube6)Frozen, plugged, or restricted crankcase breather tube. It is important to check for plugged or restricted hoses, tubes, check...

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Cummins ISB6.7 CM2150 (2007-09) Fault Code: 559 (ISB/QSB3.3) PID: 157 SPN: 157

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Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe™ Online for applicable fixes to the calibration stored in the ECM. If necessary, calibrate the ECM again. Refer to Procedure 019-032 in Section 19. Before performing troubleshooting work, verify the vehicle’s system voltage by monitoring battery voltage in the INSITE™ electronic service tool data monitor or connecting a digital volt ohm meter to the batteries. This will help identify a potential system voltage issue. Refer to the OEM service manual for specified voltage range and troubleshooting procedures. If the engine will not start...

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Cummins ISB6.7 CM2150 (2007-09) Fault Code: 559 (ISC/ISL) PID: 157 SPN: 157

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The fuel system is designed to run on clean fuel. It has two fuel filters to maintain this cleanliness. Carelessness in handling and storage of fuel system components during the repair can subject the precision components to damaging debris. Before servicing any fuel system components (such as fuel lines, fuel pump, injectors, etc.), clean the fittings, mounting hardware, and the area around the component to be removed. Store the components in a clean environment. Keep all fuel port openings and line ends covered so that no dirt can enter. Use the following procedure in the ISC and ISL CM2150 Service...

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Cummins ISB6.7 CM2150 (2007-09) Fault Code: 584 PID: SID 39 SPN: 677 FMI: 3 Starter Relay Driver Circuit – Voltage Above Normal or Shorted to High Source. Open circuit or high voltage detected at starter lockout circuit.

Posted by Diezel Solutions on

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on Quickserve® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM. The ECM monitors the voltage level on this circuit. If it detects a voltage when the signal is commanded off, it records this fault code. Possible causes: 1)Open circuit in the starter lockout relay, OEM harness, or connectors2)Short circuit to a voltage source in the OEM harness or relay. Possible repairs: 1)Replace the starter lockout relay.2)Clean, repair, or replace the OEM harness.3)Repair or replace the OEM harness.4)Replace...

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Cummins ISB6.7 CM2150 (2007-09) Fault Code: 585 PID: SID 039 SPN: 677 FMI: 4 Starter Relay Driver Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at starter lockout circuit.

Posted by Diezel Solutions on

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, recalibrate the ECM. The ECM monitors the voltage level on this circuit. If it detects a low voltage when the signal is commanded on, it records this fault code. This fault code can be caused by a short circuit to ground in the starter lockout relay, OEM harness, or connectors. Possible repairs: 1)Replace the starter lockout relay.2)Clean, repair, or replace the OEM harness.3)Repair or replace the OEM harness.4)Replace the ECM....

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