Introduction:
When working with advanced diagnostic systems like the ISUZU IDSS Scan Tool, technicians may occasionally encounter power-up problems. This troubleshooting guide is designed to assist users in resolving issues where the ISUZU IDSS Scan Tool fails to power up, specifically for the 2021 RG01 Euro 4JJ3 AWR6B45 Engine Control 4JJ3 with DPD. Before proceeding, it’s essential to verify that the scan tool functions correctly on another vehicle to rule out device-specific issues.
Related Contents:
ISUZU US-IDSS II 2024 2019 Diagnostic Software Free Download
2023 2019 Isuzu G-IDSS Export Diagnostic Software Free Download
ISUZU IDSS MX2-T Diagnostic Adapter
Nexiq USB Link 2
Preparation:
To ensure a comprehensive approach, users may refer to additional resources such as the ISUZU US-IDSS II 2024 2019 Diagnostic Software, the 2023 2019 Isuzu G-IDSS Export Diagnostic Software, and consider tools like the ISUZU IDSS MX2-T Diagnostic Adapter and Nexiq USB Link 2.
Troubleshooting Steps:
1. IDSS Interface Power-Up Check:
– Observe the LED power lamp on the IDSS interface.
– If the LED illuminates, proceed to the USB cable connection check.
– If the LED does not illuminate, move on to smart cable and USB cable inspection.
2. USB Cable Connection Check:
– Inspect the USB cable connections between the computer and the IDSS interface.
– Repair any poor connections, then verify the repair.
3. Smart Cable and USB Cable Inspection:
– Check the connections at the smart cable of the DLC and the IDSS interface.
– Examine the USB cable connections.
– If all connections are normal, proceed to the fuse inspection.
– If any connections are faulty, repair them and verify the repair.
4. Fuse Inspection:
– Turn OFF the vehicle’s ignition switch.
– Check the METER(+B) 10A fuse for a blowout.
– If the fuse is intact, continue to the DLC inspection.
– If the fuse is blown, replace it and address any short-to-ground issues before verifying the repair.
5. DLC Inspection:
– Check for poor connections at the DLC (C19), referring to the ETM wiring diagrams for RHD and LHD configurations.
– If the connection is normal, proceed to inspect for an open circuit in the DLC battery power supply circuit.
– If the connection is poor, repair it and verify the repair.
6. Inspection for Open Circuit in DLC Battery Power Supply Circuit:
– Use a test lamp between pin 16 of C19 and the body ground.
– If the lamp illuminates, move on to inspect for an open circuit in the DLC ground circuit.
– If the lamp does not illuminate, repair the open circuit and verify the repair.
7. Inspection for Open Circuit in DLC Ground Circuit:
– Inspect pins 4 and 5 of C19 for open circuits or high resistance.
– If the inspection is normal, address intermittent engine conditions as per the manual.
– If there are issues, repair the circuit, clean, or tighten the ground terminal, then verify the repair.
8. Repair Verification:
– Reconnect the scan tool to the DLC and attempt to power it up.
– If the scan tool powers up, the system is functioning correctly.
– If the scan tool still does not power up, repeat the IDSS interface power-up check.
Conclusion:
By following this step-by-step guide, technicians can methodically diagnose and resolve the issue of an ISUZU IDSS Scan Tool not powering up. It is crucial to perform each step carefully and verify the repair to ensure the functionality of the diagnostic tool. If problems persist after repeated troubleshooting, seeking assistance from ISUZU technical support or a professional diagnostician may be necessary.
For more guide about ISUZU,please refer to:ISUZU Trouble Repair.
