823799T19 Mercury CARBURETOR

Table 1
J1939 Code and Description CDL Code and Description Comments
168-3
Electrical System Voltage : Voltage Above Normal 168–3
Battery Potential / Power Input #1 : Voltage Above Normal The ECM detects voltage that is above the acceptable value.
168-4
Electrical System Voltage : Voltage Below Normal 168-4
Battery Potential / Power Input #1 : Voltage Below Normal
3218–11
Aftertreatment #1 Intake NOx Level Sensor Power Supply : Other Failure Mode 3781–11
Aftertreatment #1 Intake Gas Sensor Power Supply : Other Failure Mode
3228–11
Aftertreatment #1 Outlet #1 NOx Level Sensor Power Supply : Other Failure Mode 3619–11
Aftertreatment #1 Outlet Gas Sensor Power Supply : Other Failure Mode
3257–11
Aftertreatment #1 Intake #2 NOx Level Sensor Power Supply : Other Failure Mode 3968–11
Aftertreatment 2 Intake Gas Sensor Power Supply : Other Failure Mode
3267–11
Aftertreatment #1 Outlet #2 NOx Level Sensor Power Supply : Other Failure Mode 3620–11
Aftertreatment #2 Outlet Gas Sensor Power Supply : Other Failure Mode
3360-3
Aftertreatment #1 DEF Controller : Voltage Above Normal 3820-3
Aftertreatment #1 DEF Controller : Voltage Above Normal
3360-4
Aftertreatment #1 DEF Controller : Voltage Below Normal 3820-4
Aftertreatment #1 DEF Controller : Voltage Below Normal
4450–3
Aftertreatment #2 DEF Controller #1 : Voltage Above Normal 4577–3
Aftertreatment #2 Diesel Exhaust Fluid Controller : Voltage Above Normal
4450–4
Aftertreatment #2 DEF Controller #1 : Voltage Below Normal 4577-4
Aftertreatment #2 Diesel Exhaust Fluid Controller : Voltage Below Normal
7538-3
Aftertreatment #1 Diesel Exhaust Fluid Controller #2 : Voltage Above Normal 4797-3
Aftertreatment #1 Diesel Exhaust Fluid Controller #2 : Voltage Above Normal
7538-4
Aftertreatment #1 Diesel Exhaust Fluid Controller #2 : Voltage Below Normal 4797-4
Aftertreatment #1 Diesel Exhaust Fluid Controller #2 : Voltage Below Normal
7539-3
Aftertreatment #2 DEF Controller #2 : Voltage Above Normal 4798-3
Aftertreatment #2 Diesel Exhaust Fluid Controller #2 : Voltage Above Normal
7539-4
Aftertreatment #2 DEF Controller #2 : Voltage Below Normal 4798-4
Aftertreatment #2 Diesel Exhaust Fluid Controller #2 : Voltage Below Normal The engine ECM requires the keyswitch to be in the ON position to maintain communications with Cat® Electronic Technician (ET).Probable Causes
Codes
Circuit
BatteryRecommended Actions
Table 2
Troubleshooting Test Steps Value Results
1. Determine the Diagnostic Code
A. Establish communication between the Cat ET and the ECM . Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Start the engine. Run the engine until the engine is at normal operating temperature.
C. Observe the "Active Diagnostic" screen on Cat ET. Wait at least 30 seconds so that any codes may become active.
Codes
Result: A -3 or -11 diagnostic code is active.
Proceed to Test Step 2.
Result: A -4 diagnostic code is active.
Proceed to Test Step 3
2. Check the Charging Circuit
A. Check the charging circuit. Refer to Special Instruction, REHS0354, "Charging System Troubleshooting".
Charging circuit
Result: The charging system is OK.
Proceed to Test Step 3.
Result: The charging system is not OK.
Repair: There is a problem with the charging system. Make the necessary repairs. Refer to Special Instruction, REHS0354, "Charging System Troubleshooting".
If the problem is not resolved, proceed to Test Step 3.
3. Load Test the Battery
A. Load test the battery. Refer to Systems Operation and Testing and Adjusting, "Battery - Test"
Load test
Result: The battery voltage is low or the battery did not pass the load test.
Repair: Recharge or replace the faulty batteries. Verify that the repair eliminates the problem.
Result: The batteries pass the load test. The measured voltage is between 11.5 VDC and 13.5 VDC for a 12 v system. The measured voltage is between 23.0 VDC and 27.0 VDC for a 24 v system.
Repair: Check the wiring between the batteries and the ECM / NOx sensor. Refer to the application-specific wiring schematic for pin locations.
Check the connectors between the batteries and the ECM / NOx sensor for moisture and/or corrosion. Repair or replace the wiring and/or the connectors. Verify that the repair eliminates the problem.