8M0050704 Mariner BEARING, Needle

Active Diagnostic Codes
An Active diagnostic code represents a problem with the electronic control system. This problem should be corrected as soon as possible. When an active diagnostic code is generated, a display module such as the Caterpillar Monitoring System may produce a warning.Logged Diagnostic Codes
When, the ECM generates a diagnostic code the ECM logs the code in permanent memory. The ECM has an internal diagnostic clock. The ECM will record the hour of the first occurrence of the diagnostic code. The ECM will record the hour of the last occurrence of the diagnostic code. The ECM will record the number of occurrences of the code. This information is a valuable indicator for troubleshooting intermittent problems. Any Logged diagnostic codes will automatically be deleted if no additional occurrences are recorded in 100 hours. Some diagnostic codes may be easily triggered. Some diagnostic codes may log occurrences that did not result in complaints. The most likely cause of an intermittent problem is a faulty connection or damaged wiring. The next likely cause is a component failure. The least likely cause is the failure of the ECM. Diagnostic codes that are logged repeatedly may indicate a problem that needs special investigation.If the symptoms continue, use the proper procedure for troubleshooting the symptoms that have been experienced by the operator.Note: Always clear logged diagnostic codes after you investigate the problem which generated the code. Always clear logged diagnostic codes after you correct the problem which generated the code.
Illustration 1 g00592364The diagram indicates output voltage from the Coolant Temperature Sensor. The normal output range of the sensor is between 0.2 VDC and 4.8 VDC. If the sensor or wiring to the sensor become open or shorted, a diagnostic code will be generated. The diagnostic code will remain active until the condition disappears or the condition is corrected. The diagnostic code will be logged in the memory of the ECM. The Cat ET can be used to turn these features ON and OFF. When the features are turned ON, the display will appear on an electronic monitoring module. When the features are turned OFF, the display will not appear on a monitoring module, but the diagnostic code will still be logged.Portions of this material are reprinted with permission from SAE J1939DA_201607© 2016 SAE International. SAE International is not responsible for any use or translation of this material, in whole or in part. Please contact SAE International to obtain a complete copy of SAE J1939DA_201607, the official definitive source of this standard.Diagnostic Terminology
Table 1
Cross-Reference from CID-FMI Code to SPN-FMI Code
CID(1) FMI(2) SPN-FMI Code Description
0001 05 651-05 Cylinder 1 current is below the normal range
0001 06 651-06 Cylinder 1 current is above the normal range
0002 05 652-05 Cylinder 2 current is below the normal range
0002 06 652-06 Cylinder 2 current is above the normal range
0003 05 653-05 Cylinder 3 current is below the normal range
0003 06 653-06 Cylinder 3 current is above the normal range
0004 05 654-05 Cylinder 4 current is below the normal range
0004 06 654-06 Cylinder 4 current is above the normal range
0005 05 655-05 Cylinder 5 current is below the normal range
0005 06 655-06 Cylinder 5 current is above the normal range
0006 05 656-05 Cylinder 6 current is below the normal range
0006 06 656-06 Cylinder 6 current is above the normal range
0007 05 657-05 Cylinder 7 current is below the normal range
0007 06 657-06 Cylinder 7 current is above the normal range
0008 05 658-05 Cylinder 8 current is below the normal range
0008 06 658-06 Cylinder 8 current is above the normal range
0091 00 N/A Throttle Switch data is above the normal range
0091 02 91-02 Throttle Switch incorrect signal
0100 03 100-03 Engine Oil Pressure Sensor voltage is above the normal range
0100 04 100-04 Engine Oil Pressure Sensor voltage is below the normal range
0100 13 N/A Engine Oil Pressure Sensor is out of calibration
0101 03 101-03 Crankcase Pressure Sensor voltage is above the normal range
0101 04 101-04 Crankcase Pressure Sensor voltage is below the normal range
0101 13 101-13 Crankcase Pressure Sensor is out of calibration
0110 03 110-03