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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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The ISUZU G-IDSS Domestic Japan 2024 is an advanced diagnostic tool designed for Isuzu vehicles. This version introduces several key features that enhance vehicle maintenance and streamline diagnostics. With improved user interfaces and multi-language support, technicians can efficiently navigate the system. The G IDSS also offers advanced programming capabilities, allowing for precise control updates and accurate diagnostics.
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Cummins ISB CM550 (1990-94) Fault Code: 441 PID: 168 SPN: 168 FMI: 1 Unswitched Battery Supply Circuit

Circuit Description
The ECM receives unswitched battery input through the engine harness. There are three inline
7.5-amp fuses and two 10-amp fuses in the unswitched battery wire of the actuator
harness to protect the engine harness from overheating.

Component Location
The ECM is connected to the battery by the engine harness. This direct link provides a
constant power supply for the ECM. The location of the battery will vary with the equipment
manufacturer. Refer to the equipment manufacturer’s repair manual for the battery location.

Shop Talk
Make sure the ECM unswitched battery supply is coming directly from the battery and not the
starter or other device. Check for possible weak batteries.

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