Cummins ISX15 User Manual

Printed from QuickServe® Online.

Last Modified: 17-Jan-2021

File: 656-t06-1963 Page 1 of 9

ISX15 CM2250

Fault Code: 1963 | SPN: 3482 | FMI: 7

Aftertreatment Fuel Shutoff Valve - Mechanical System Not

Responding or Out of Adjustment

1 Check for primary fault codes

2 Low pressure fuel system component is malfunctioning

2.1 Air in fuel check

2.2 Fuel Inlet Restriction check

2.3 Fuel lift pump check

2.4 OEM fuel system component check

3 Aftertreatment fuel shutoff manifold is malfunctioning

4 Fuel filter restriction

Printed from QuickServe® Online.

Last Modified: 17-Jan-2021

File: 656-t06-1963 Page 2 of 9

1 Check for primary fault codes

Solution: S00000174

Verification

Conditions

• Turn keyswitch ON.

• Connect the recommended Cummins® electronic service tool or equivalent.

Action

• Use the recommended Cummins® electronic service tool or equivalent to read the fault codes.

Specification

Before troubleshooting this fault code, troubleshoot any fault code that is active or has more than one inactive count within the last 25 engine operating hours from the following list:

• Aftertreatment fuel: 1923, 1924, 1925, 1926, 1927, 1928

• Fuel: 559, 2372

Linked Solutions

• None

Repair

• Perform a search on the appropriate fault codes.

Validation

• None

Printed from QuickServe® Online.

Last Modified: 17-Jan-2021

File: 656-t06-1963 Page 3 of 9

2 Low pressure fuel system component is malfunctioning

Solution: S00000640

Verification

Conditions

• Turn keyswitch ON.

Action

• Verify the fuel system is primed. Refer to Procedure 005-234

• Measure the fuel pump gear pump outlet pressure at idle and at high idle. Refer to Procedure 005-236

• If engine will not start, then perform the check during cranking.

Specification

• If the fuel pump gear pump outlet pressure is not within specification, then proceed to Linked Solutions section.

Linked Solutions

• Air in fuel check (2.1 [S00001205])

• Fuel Inlet Restriction check (2.2 [S00001206])

• Fuel lift pump check (2.3 [S00001207])

• OEM fuel system component check (2.4 [S00000756])

• If the above checks are all within specification, then a malfunctioning fuel gear pump has been detected

Repair

• Replace the fuel pump gear pump. Refer to Procedure 005-025

Validation

• Connect all components

• Connect the recommended Cummins® electronic service tool or equivalent.

• Disable the fault code.

• Operate the engine within the "Conditions for Clearing the Fault Code" found in the Overview section of the troubleshooting procedure.

• Verify that the fault code is no longer active.

• Check ECM Calibration Revision History

• Use the recommended Cummins® electronic service tool or equivalent to find the current ECM code and revision number in the ECM.

• Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.

• Refer to ECM Calibration Revision History Database.

+ 6 hidden pages