55141-94300 Suzuki Emblem, Gear Case Right Hand Side

Table 1
CDL Code and Description System Response
E1127(1)
Low Fuel Filter (suction side) Intake Pressure The fuel pressure in the engine fuel supply system is below the trip point for the programmed delay time.
E1127(2)
Low Fuel Filter (suction side) Intake Pressure The fuel pressure in the engine fuel supply system is below the trip point for the programmed delay time.
E1129(1)
Fuel Filter (suction side) Restriction The primary fuel filters are plugged.
E1129(2)
Fuel Filter (suction side) Restriction The primary fuel filters are plugged.
E1569 (1)
Low Electric Fuel Transfer Pump Outlet Pressure The Clean Fuel Module electric lift pump is not working properly.
E1569 (2)
Low Electric Fuel Transfer Pump Outlet Pressure The Clean Fuel Module electric lift pump is not working properly.
E2172 (1)
Low Fuel Transfer Pump Inlet Pressure The fuel transfer pump inlet pressure is too low.
Table 2
Associated Codes
CDL Codes Troubleshooting Procedure
1627-5 Troubleshooting, "Fuel Priming Pump - Test"
1627-6 Troubleshooting, "Fuel Priming Pump - Test"
4550-5 Troubleshooting, "Fuel Priming Pump - Test"
4550-6 Troubleshooting, "Fuel Priming Pump - Test"
E1129 Troubleshooting, "Fuel Filter Is Restricted"
Illustration 1 g06049000
(1) Tank
(2) CFM pump
(3) CFM out pressure sensor
(4) Primary fuel filters
(5) Priming pump
(6) Fuel transfer pump
(7) Secondary fuel filters
(8) Fuel transfer pressure sensor
(9) Tertiary fuel filter
(10) High pressure fuel pump
(11) Fuel transfer pump outlet sensor
(12) Fuel transfer pump inlet sensorTest Procedure
Table 3
Troubleshooting Test Steps Values Results
1. Inspect the Fuel System for Leaks
A. Perform a visual inspection of the fuel system.
Verify that there are no fuel leaks. Inspect the fuel lines from the fuel tank to the fuel transfer pump for restrictions. Refer to Systems Operation/Testing and Adjusting, "Fuel System - Inspect", for additional information.
Leaks in the Fuel System
Result: No leaks were found.
Proceed to Test Step 2 .
Result: Leaks were found in the fuel system.
Repair: Repair the leaks.
Verify that the problem is resolved.
2. Check for Associated Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Check for an active associated code.
Codes
Result: An associated code is active.
Repair: Troubleshoot the associated code.
Result: There are no associated codes.
Proceed to Test Step 3.
3. Check for Event Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Turn the keyswitch to the ON position.
C. Record the active event codes.
Event Codes
Result: An E1127 or E1569 is present.
Proceed to Test Step 4.
Result: Both an E1127 or E1569 AND an E2172 are present.
Proceed to Test Step 4.
Result: An E 2172 is present.
Proceed to Test Step 9.
4. Check for Power to the Clean Fuel Module Pump
A. Turn the keyswitch to the OFF position.
B. Disconnect the wiring harness from the clean fuel module pump.
C. Turn the keyswitch to the ON position.
D. Connect Cat ET.
E. Use the "Electric Fuel Transfer Pump Relay Override" to energize the clean fuel module fuel pump.
F. Measure the voltage between pin 2 and pin 3 on the connector for the clean fuel module pump.
G. Measure the voltage between pin 2 and pin 4 on the connector for the clean fuel module pump.
System Voltage
Result: The voltage at the clean fuel pump module connector is equal to system voltage.
Proceed to Test Step 5.
Result: The voltage at the clean fuel pump module connector is NOT equal to system voltage.
There is a problem with the power supply circuit between the clean fuel module pump connector and the battery supply. Check the circuit protection device, the relay, and the ground for the clean fuel module pump circuit. Refer to the appropriate wiring diagram to troubleshoot the circuit.
5. Inspect the Fuel Supply Lines for Restrictions
A. Visually inspect the fuel lines between the fuel tank and the inlet to the clean fuel module. Inspect the lines for restrictions, pinching, and swelling. Refer to Systems Operation/Testing and Adjusting, "Fuel System - Inspect", for additional information.
B. Check for plugged fuel tank vent lines or a plugged fuel tank suction screen.
Dirt and Debris or Damage
Result: The fuel lines, tank vent, and suction screen are OK.
Proceed to Test Step 6.
Result: The fuel lines, tank vent, and suction screen are NOT OK.
Repair: Replace damaged fuel lines.
Verify that the problem has been resolved.
6. Prime the Fuel System
A. Remove the air in the fuel system by performing a priming cycle.
B. Refer to the Operation and Maintenance Manual for instructions.
Priming
Result: The fuel system is primed.
Proceed to Test Step 7.
7. Check the Clean Fuel Module Pump Pressure
A. Turn the keyswitch to the OFF position.
B. Remove the clean fuel module inlet pressure sensor.
C. Connect a fuel pressure gauge to the port where the sensor was removed from the clean fuel module.
D. Turn the keyswitch to the ON position.
E. Connect Cat ET.
F. Use the "Electric Fuel Transfer Pump Relay Override" to turn on the clean fuel module fuel pump.
G. Monitor the fuel pressure on the gauge.
30 kpa – 150 kpa (4 PSI – 21.5 PSI)
Result: The clean fuel module pump pressure is within specification.
Proceed to Test Step 8.
Result: The clean fuel module pump pressure is NOT within specification.
A failed clean fuel module pump has been detected.
Repair: Replace the clean fuel module pump.
Proceed to Test Step 11.
8. Check for Proper Clean Fuel Module Pump Operation
A. Turn the keyswitch to the ON position.
B. Connect Cat ET.
C. Start the engine and allow engine to run for at least 10 minutes.
D. Monitor the "Fuel Temperature" parameter in the status screen.
E. The "Fuel Temperature" must be greater than 15° C (59° F).
F. Check for active diagnostic codes.
Note: Enablement conditions for this fault code require at least 10 minutes of engine run time, and fuel temperature must be greater than 15° C (59° F).
Codes
Result: No codes are active.
Return to service.
Result: An E1127 or E1569 code is present.
Refer to Troubleshooting, "Fuel Pressure Is Low – Fuel Transfer System".
9. Inspect the Fuel Supply Lines for Restrictions
A. Visually inspect the fuel lines between the clean fuel module (CFM) and the fuel transfer pump. Inspect the lines for restrictions, pinching, and swelling. Systems Operation/Test