Cumminz
Cummins ISB6.7 CM2150 (2007-09) Fault Code: 686 PID: 103 SPN: 103 FMI: 2 Turbocharger 1 Speed – Data Erratic, Intermittent, or Incorrect. An invalid turbocharger speed signal has been detected by the ECM.
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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, recalibrate the ECM. This fault code is logged when the ECM detects a turbocharger speed that is greater than the speed that is physically achievable by the turbocharger. Usually this indicates a faulty sensor or incorrect speed signals from the turbocharger speed sensor. This fault can be caused by failures in the following components: 1)Turbocharger speed sensor2)Engine harness3)ECM power supply or grounds4)Electronic vehicle accessories which emit excessive electromagnetic interference. This...
Cummins ISB6.7 CM2150 (2007-09) Fault Code: 687 PID: 103 SPN: 103 FMI: 1 Turbocharger 1 Speed – Data Valid But Below Normal Operating Range – Moderately Severe Level. Low turbocharger speed detected by the ECM.
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Verify the 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. This fault can possibly come active if the ECM senses engine speed while at the same time a turbocharger speed signal is less than 600 rpm. Possible causes: 1)Damaged turbocharger speed sensor2)Damaged engine harness3)Damaged alternator (EMI or internal short)4)Damaged ECM. This fault becomes inactive any time the speed signal from the turbocharger speed sensor returns. If the fault occurs intermittently, look for causes of intermittent open or short circuits in...
Cummins ISB6.7 CM2150 (2007-09) Fault Code: 688 PID: 98 SPN: 98 FMI: 0 Engine Oil Level – Data Valid but Above Normal Operational Range – Most Severe Level. High oil level has been detected by the oil level sensor.
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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, recalibrate the ECM. Fault code 688 indicates that the oil level in the engine is much higher than the recommended oil level. Other causes of fault code 688 may include: 1)The engine may have been overfilled with oil during the most recent oil change.2)The fuel system may be leaking into the lube oil system. Check for fuel system faults or use fluorescent fuel system dye to identify leaks.3)The cooling system...
Cummins ISB6.7 CM2150 (2007-09) Fault Code: 689 PID: 190 SPN: 190 FMI: 2 Engine Crankshaft Speed/Position – Data Erratic, Intermittent, or Incorrect. The ECM has detected an error in crankshaft position sensor signal.
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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, recalibrate the ECM. This fault is logged when the ECM does not receive a valid crankshaft position signal. Possible causes: 1)Open or short circuit of the 5 volt SUPPLY, SIGNAL, or RETURN wire in the engine harness2)Damaged crankshaft position sensor. Possible repairs: 1)Replace the engine wiring harness.2)Replace or shim the sensor if air gap is out of specification. If the target runout is excessive, replace the target.3)Replace the crankshaft position...
Cummins ISB6.7 CM2150 (2007-09) Fault Code: 691 PID: 351 SPN: 1172
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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. The turbocharger inlet air temperature sensor shares return wires in the engine harness with other sensors. An open return can cause multiple fault codes to be active. Before troubleshooting Fault Code 691, check for multiple fault codes. An extension harness between the main engine harness and the turbocharger compressor inlet temperature sensor can be used depending on the turbocharger arrangement. On ISB with CM2150 engines, an extension...