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Isuzu US-IDSS 2024 Diagnostic is a comprehensive tool for the effective maintenance and repair of Isuzu vehicles. It integrates advanced diagnostic features to assist technicians in identifying and resolving issues promptly. This system supports a wide range of Isuzu models, ensuring compatibility with both US and Canadian specifications. Its capabilities include vehicle recognition, fault code analysis, and real-time data access to streamline the diagnostic process.
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Cummins ISB CM550 (1990-94) Fault Code: 363 PID: 251 SPN: 1076 FMI: 7 Fuel Pump Control Valve Feedback Error

Circuit Description
This circuit is internal to the fuel pump and detects fuel solenoid movement.

Component Location
The fuel pump is located on the backside of the gear housing on the intake side of the engine.

Shop Talk
No current inflection recognized within the solenoid closing time. This fault is typically set when a fuel pump beginning of injection point error is recognized at engine speeds greater than 700 rpm and commanded fueling greater than 20 mm3 [0.787 in3] for 2 seconds at battery voltage (greater than 9-VDC). The fault code can be triggered by electrical noise or voltage feedback on ground loop. Jump-starting a vehicle with 24-VDC can cause this fault code to be set.

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