This Cummins Fault Code 361 document is a troubleshooting manual for the VP44 fuel pump circuit on Cummins ISB CM550 applications. It explains the VP44 fuel valve control high current error, the conditions that set the fault, and the electrical checks used to confirm the repair.
Official Cummins Fault Code 361 document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB CM550 (1990-94) |
| System/Group | DTCs; VP44 Fuel Pump Circuit |
| Publication no. | Not shown in extract |
| Year/Revision | Unknown; copywrite 2017 shown on pages |
| Pages | 6 |
| File size | 0.4 MB |
| Format | |
| Language | English |
Document table of contents
- Fault Code: 361
- PID: P0254
- VP44 Fuel Valve Control High Current Error
- VP44 Fuel Pump Circuit
- Description
- Component Location
- Troubleshooting Steps
- Step 1A: Check whether the fault code is active at engine start-up
- Step 2A: Measure supply voltage to the fuel pump while cranking
- Step 3A: Install the VP44 fuel pump diagnostic tool, Part Number 3163834
- Step 4A through 4D: Inspect connectors, pins, supply resistance, ground circuit resistance, fuses, relays, and harnesses
- Step 5A: Inspect the fuel pump fuel solenoid wire leads
- Step 6A through 6F: Inspect grounds, OEM distribution box wiring, alternator voltage, lift pump resistance, keyswitch input line, and accessory electrical noise interference
- Step 7A and 7B: Disable, road-test, verify inactive status, and clear inactive fault codes
Applicable truck models
This file applies to Cummins ISB CM550 engines listed in the document group as 1990-94, with diagnostics focused on the VP44 fuel pump control module and fuel-metering solenoid valve circuit. The extract does not name specific truck makes or chassis models, so coverage should be confirmed by engine control system and fault code before use. See the official manufacturer site at Cummins.
Who needs this Cummins Fault Code 361 manual
Workshop technicians need this Fault Code 361 manual when diagnosing a VP44 fuel valve control high current error, especially where low battery voltage, loose pins at pins 6 and 7, connector corrosion, damaged harnesses, relay faults, poor grounds, alternator issues, lift pump resistance, or electrical noise may be involved.
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