C13, C15, And C18 Engines ARD Fuel Pressure is Low

C13, C15, and C18 Engines/ ARD Fuel Pressure Is Low ARD Fuel Pressure Is Low 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 J1939 Code

CDL Code

3480-17

E1052 (1)

Low Aftertreatment #1 Fuel Pressure #1 - Least Severe

There are Enhanced Troubleshooting Indicators for this code.

3480-18

E1052 (2)

Low Aftertreatment #1 Fuel Pressure #1 - Moderate Severity

There are not Enhanced Troubleshooting Indicators for this code.

4077-17

E1053 (1)

Low Aftertreatment #1 Fuel Pressure #2 - Least Severe

There are Enhanced Troubleshooting Indicators for this code.

4077-18

E1053 (2)

Low Aftertreatment #1 Fuel Pressure #2 - Moderate Severity

There are not Enhanced Troubleshooting Indicators for this code.

Code Description

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

Comments

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 Result: A 5580-18 or E198 code is not active. Proceed to Test Step 2.

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.

Associated Diagnostic Trouble Codes

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.

B. Check for associated diagnostic trouble codes.

2. Record the Enhanced Troubleshooting Indicator (ETI) Code

A. Establish communication between Caterpillar Electronic Technician (ET) and the Electronic Control Module

Result: A 5580-18 or E198 code is active. Refer to Troubleshooting, "Fuel Pressure Is Low" for the proper troubleshooting  procedure. STOP.

Recorded ETI code

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

(ECM) . Refer to Troubleshooting, "Electronic Service Tools", if necessary. B. The ETI code is located in the "Active Events" or "Logged Events" screen in Cat ET. Record the Enhanced Troubleshooting Indicator (ETI) code. ETI codes are not available for (2) or 18 codes.

Table 5 Troubleshooting Troubleshooting Test Steps

Values

Results

Result: A leak or pinched line was not found. Proceed to Test Step 4. 3. Check for External Leaks Result: A leak or pinched line was found.

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

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 Fuel Priming Pump

A. Turn the keyswitch to the ON position. Do not start the engine. B. Establish communication between Cat ET and the engine 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.

Result: The voltage at the ARD fuel pump is within 3 VDC of the  battery voltage. Proceed to Test Step 5.

Voltage within 3 VDC of the  battery voltage

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 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. D. Start the engine. E. Select the "Aftertreatment Fuel Pump Relay Override" in the "Engine #1 Aftertreatment 1900 ± Controller" using Cat ET in order to 120 kPa activate the pump. (275.5 ± 17.4 psi) F. Override the pump and record the pressure from the pressure gauge. G. Deactivate the override. H. Turn the keyswitch to the OFF  position. I. The pressure must be within specifications. The pump pressure must be 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 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. 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.

CEM (typical)(4) Fuel filter fitting Table 8 Troubleshooting Test Steps

Values

6. Replace the Filter for the ARD Fuel Manifold

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

A. Replace the filter for the ARD fuel manifold. B. Reset all active codes and clear all logged codes by using Cat ET. 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 l oading is above 80%, the Manual DPF Regeneration must be performed using Cat ET.

Results

Filter replacement

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 using CAT ET. C. Perform the "ARD Ignition Test". Refer to Troubleshooting, "ARD Ignition - Test".

Pilot valve replacement

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

The ARD Ignition Test cannot be  performed if the DPF soot loading is above above 80%. When the DPF soot loading is above 80%, the Manual DPF Regeneration must  be performed using Cat ET. 8. Replace the Main Solenoid Valve

A. Replace the main solenoid valve. B. Reset all active codes and clear all logged codes by using CAT ET.

Main valve replacement

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

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 above 80%. When the DPF soot loading is above 80%, the Manual DPF Regeneration must  be performed using Cat ET.