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ENGINE AR-COMP 1695127 - Caterpillar



1695127 ENGINE AR-COMP Caterpillar parts ENGINE
Rating:
76
Alternative (cross code) number:
CA1695127
169-5127
1695127
Caterpillar 1695127 ENGINE AR-COMP

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Table 1
Diagnostic Trouble Codes for DEF Concentration Is Incorrect
J1939 Code and Description Pre-Conditions for Code Comments
3516-2
Aftertreatment #1 DEF Concentration : Erratic, Intermittent, or Incorrect - Battery voltage is normal.
- Key switch signal (ECM: V13 & V33, DCU: 18 terminal) is continuously activated more than 2 sec.
- Starter Switch signal (ECM: V12 terminal) is not activated except within 2 sec after starter stopped.
- CAN communication is normal between DCU and engine ECM.
- CAN communication is normal between DCU and TANK sensor. DEF type from DEF TANK sensor via CAN is indicating Diesel or oil in the DEF for 30 seconds or more.
Stop DEF injection.
(3516-11)
Aftertreatment #1 DEF Concentration : Other Failure Mode Quality sensor FMI from DEF TANK via CAN is indicating FMI 3 (Sensor element OPEN), or FMI 4 (Internal sensor error), or invalid concentration data is received for 175 seconds or more.
Stop DEF injection
3516-12
Aftertreatment #1 DEF Concentration : Failure DEF type from DEF TANK sensor via CAN is indicating 13 (Unknown), or 14 (Error) for 175 seconds or more.
3516-16
Aftertreatment #1 DEF Concentration : High - moderate severity (2) - Battery voltage is normal.
- Key switch signal (ECM: V13 & V33, DCU: 18 terminal) is continuously activated more than 2 sec.
- Starter Switch signal (ECM: V12 terminal) is not activated except within 2 sec after starter stopped.
- CAN communication is normal between DCU and engine ECM.
- CAN communication is normal between DCU and TANK sensor.
- DEF Tank Quality sensor operation is normal.
- DEF temperature is more than trigger value.
- DEF concentration data from DEF TANK via CAN is higher than 40% for 350 seconds or more.
3516-18
Aftertreatment #1 DEF Concentration : Low - moderate severity (2) DEF concentration data from DEF TANK via CAN is lower than 25% for 350 seconds or more.
Table 2
Troubleshooting Test Steps Values Results
1. Check the DEF Quality
A. Check the DEF Quality. Refer to Testing and Adjusting, "Diesel Exhaust Fluid Quality – Test".
DEF Quality Meets Standard
Result: If the DEF is contaminated with diesel or oil as per 3516-2.
Repair: For 3516-2 Diesel or Oil in DEF.If diesel or oil is confirmed in the DEF, the following DEF components must be replaced: DEF Tank, DEF Heater Unit, DEF Pump, DEF Lines, and DEF Injector.
Result: The DEF concentration is not within acceptable range.
Repair: Refer to Testing and Adjusting, "Diesel Exhaust Fluid Tank – Flush".
2. Refill the DEF Tank
A. Refill the DEF Tank. Refer to OMM. Check to see if the code comes back.
Active Code
Result: Check to see if the code comes back.
3. Check harness continuity between the DEF Heater Unit and the DCU.
Continuity


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