C15 and C18 – ARD Fuel Pressure Is Low

System Operation Description:

This procedure covers the following diagnostic trouble codes:

Note: Refer to Troubleshooting, “Cat ET Service Features” for information about service features.

Table 1
Diagnostic Trouble Codes
CDL Code J1939 Code Code Description Comments
E1052 (1) 3480-17 Low Aftertreatment #1 Fuel Pressure #1 – Least Severe There are Enhanced Troubleshooting Indicators for this code.
E1052 (2) 3480-18 Low Aftertreatment #1 Fuel Pressure #1 – Moderate Severity There are not Enhanced Troubleshooting Indicators for this code.
E1053 (1) 4077-17 Low Aftertreatment #1 Fuel Pressure #2 – Least Severe There are Enhanced Troubleshooting Indicators for this code.
E1053 (2) 4077-18 Low Aftertreatment #1 Fuel Pressure #2 – Moderate Severity There are not Enhanced Troubleshooting Indicators for this code.
Table 2
Required Parts for Use with a 11/16 Fitting
8T-0855 Pressure Gauge
8T-8902 Tee
228-7089 O-Ring Seal (Tee)
6V-4144 Quick Connect Coupler
6V-3965 Fitting
3J-1907 O-Ring Seal
Required Parts for Use with a 9/16 Fitting
7X-2444 Swivel Tee
214-7568 O-Ring Seal (Tee)
6V-3965 Fitting
3J-1907 O-Ring Seal
8T-0855 Pressure Gauge
6V-4144 Quick Connect Coupler
Optional Parts
177-7860 Hose As
177-7861 Hose As
177-7862 Hose As
126-6872 9/16 Tee
8C-3309 11/16 Tee
Table 3
Associated Diagnostic Trouble Codes
5580-18 or E198
3427-5 or 5423-5
3427-6 or 5423-6
Table 4
Troubleshooting Test Steps Values Results
1. Check for Associated Diagnostic Trouble Codes

A. Establish communication between Caterpillar Electronic Technician (ET) and the Electronic Control Module (ECM) . Refer to Troubleshooting, “Electronic Service Tools”, if necessary.

B. Check for associated diagnostic trouble codes.

Associated Diagnostic Trouble Codes Result: A 5580-18 or E198 code is not active. Proceed to Test Step 2.Result: A 5580-18 or E198 code is active.
Refer to Troubleshooting, “Fuel Pressure Is Low” for the proper troubleshooting procedure. STOP.Result: A 3427-5, 3427-6, 5423-5 or 5423-6 code is active.
Refer to Troubleshooting, “Solenoid Valve – Test” for the proper troubleshooting procedure.
2. Record the Enhanced Troubleshooting Indicator (ETI) Code

A. Establish communication between Caterpillar Electronic Technician (ET) and the Electronic Control Module (ECM) . Refer to Troubleshooting, “Electronic Service Tools”, if necessary.

B. The ETI code is located in the “Status” screen under “Enhanced Troubleshooting Information (ETI) – ARD”. Record the Enhanced Troubleshooting Indicator (ETI) code.
ETI codes are not available for (2) or -18 codes.

Recorded ETI code Result: Record the ETI code if present.
Proceed to Test Step 3.

 

Table 5
Troubleshooting Test Steps Values Results
3. Check for External Leaks

A. Check for external leaks. Inspect the fuel lines from the pump to the fuel manifold. Check for pinched lines or leaking lines.

External leaks Result: A leak or pinched line was not found.
Proceed to Test Step 4.Result: A leak or pinched line was found.Repair all damaged lines or leaking lines. Perform the “ARD Ignition Test” by using Cat ET. Refer to System Operation and Testing and Adjusting , “ARD Fuel System – Test”. If the “ARD Ignition Test” was successful, return the unit to service.
If the ARD ignition test was not successful, Proceed to Test Step 4.

 

Table 6
4. Check for Electrical Power at the ARD Fuel Pump

A. Turn the keyswitch to the ON position. Do not start the engine.

B. Establish communication between Cat ET and the ECM. Select “Fuel Priming Command Override” or use the manual priming switch (if equipped) in order to activate the ARD fuel pump. Refer to Troubleshooting, “Cat ET Service Features” for information about service features.

C. Check for voltage between pin 1 and pin 2 on the connector to the fuel priming pump. Check the voltage while the pump is in override. Voltage is not present unless the pump is priming.

D. Deactivate the override.

E. Turn the keyswitch to the OFF position.

F. Check the voltage at the battery.

Voltage within 3 VDC of the battery voltage Result: The voltage at the ARD fuel pump is within 3 VDC of the battery voltage.
Proceed to Test Step 5.Result: The voltage at the ARD fuel pump is not within 3 VDC of the battery voltage.
Refer to the machine troubleshooting schematic in order to troubleshoot the circuit for the priming pump. STOP.


ARD electric pump

(1) Pump

(2) Base Assembly


ARD electric pump

(3) Output port of the pump


Assembled required parts

 

Table 7
Troubleshooting Test Steps Values Results
5. Check the Pump

A. Turn the engine “OFF”.

B. Disconnect the ARD fuel line from the pump.

C. Install the required parts listed in Table 2 at the outlet port of the pump.

Start the engine.

Select the “Aftertreatment Fuel Pump Relay Override” in Cat ET in order to activate the pump.

Override the pump and record the pressure from the pressure gauge.

Deactivate the override.

Turn the keyswitch to the OFF position.

The pressure must be within specifications. The pump pressure must be 1900 ± 120 kPa (275.5 ± 17.4 psi).

1900 ± 120 kPa (275.5 ± 17.4 psi) Result: The pump is not within specifications.
Refer to Troubleshooting, “ARD Fuel Supply – Test” for troubleshooting information. STOP.Result: The pump is within specifications.
If you are troubleshooting an E1052 (2) or 3480-18 diagnostic code, proceed to Test Step 7. If you are troubleshooting a E1053 (2) or 4077-18 diagnostic code, proceed to Test Step 8.Result: The pump is within specifications.
If you are troubleshooting a E1052 (1) or 3480-17 diagnostic code or a E1053 (1) or 4077-17 diagnostic code with an ETI of 2 or 3, proceed to Test Step 6.


CEM (typical)

(4) Fuel filter fitting

 

Table 8
Troubleshooting Test Steps Values Results
6. Replace the Filter for the ARD Fuel Manifold

A. Replace the filter for the ARD fuel manifold.

B. Reset all active codes and clear all logged codes by cycling the keyswitch to the Off position.

C. Perform the “ARD Ignition Test” by using Cat ET. Refer to System Operation and Testing and Adjusting , “ARD Fuel System – Test”.
The ARD Ignition Test cannot be performed if the DPF soot loading is above 80%. When the DPF soot loading is above 80%, the Manual DPF Regeneration must be performed using Cat ET.

Filter replacement Result: The “ARD Ignition Test” was successful and no codes were logged. Return the unit to service. STOP.

Result: The “ARD Ignition Test” was not successful.
If you are troubleshooting an E1052 (1) or 3480-17 code with an ETI of 2, Proceed to Test Step 7.

Result: The “ARD Ignition Test” was not successful.
If you are troubleshooting an E1053 (1) or 4077-17 code with an ETI of 2, Proceed to Test Step 8.


CEM (typical)

(5) Main solenoid valve

(6) Pilot solenoid valve

 

Table 9
Troubleshooting Test Steps Values Results
7. Replace the Pilot Solenoid Valve

A. Replace the pilot solenoid valve.

B. Reset all active codes and clear all logged codes by cycling the keyswitch to the Off position.

C. Perform the “ARD Ignition Test”. Refer to Troubleshooting, “ARD Ignition – Test”.
The ARD Ignition Test cannot be performed if the DPF soot loading is above 80%. When the DPF soot loading is above 80%, the Manual DPF Regeneration must be performed using Cat ET.

Pilot valve replacement Result: The “ARD Ignition Test” was successful and no codes were logged. Return the unit to service. STOP.
8. Replace the Main Solenoid Valve

A. Replace the main solenoid valve.

B. Reset all active codes and clear all logged codes by cycling the keyswitch to the Off position.

C. Perform the “ARD Ignition Test”. Refer to Troubleshooting, “ARD Ignition – Test”.
The ARD Ignition Test cannot be performed if the DPF soot loading is above 80%. When the DPF soot loading is above 80%, the Manual DPF Regeneration must be performed using Cat ET.

Main valve replacement Result: The “ARD Ignition Test” was successful and no codes were logged. Return the unit to service. STOP.

Test Step 1.

Complete the procedure in the order in which the steps are listed.

Results:

  • The procedure corrected the issue. – STOP
  • The procedure did not correct the issue. –Repair: Contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).

    STOP

Posted in C18

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