• A charging system component is faulty.
• A wiring harness conductor is faulty.
• The Product Link is faulty, but a Product Link fault is unlikely.
Note: Determine if a battery charger or welding machine is being used on the machine. Disconnect the charger or welding machine from the machine. Recheck for diagnostic codes.
Test Procedure 1. Check the system voltage of the PRODUCT LINK.
A. Start the engine and run it at high idle for 5 to 10 minutes. B. Measure the system voltage between the “No Switching Power” and “Ground” contacts. Pin 52 is the “No Switching Power” terminal, and pin 65 is the “Ground” terminal.
Expected Result: Voltage is 11 VDC to 32 VDC.
Result:
• OK – Voltage is 11 VDC to 32 VDC. The Product Link should not log this diagnostic code.
Repair: Clear the diagnostic codes from Product Link using Caterpillar Electronics Technician (Cat ET). If the voltage is normal but Product Link records this diagnostic code again, Product Link may need to be replaced. Before replacing Product Link, please contact your Caterpillar technical correspondent.
Stop
• No – No other “CID 168 FMI 00” diagnostic codes can be found on other Electronic Control Modules (ECMs). Repair: Clear the fault if all of the following occur: ◦
No fault was found in the charging system. ◦ No fault was found in the wiring.
The fault has recurred several times.
Monitor the module and machine for further malfunctions. If the fault recurs, the Product Link module may be faulty. The Product Link should be replaced. Please refer to System Operation, Troubleshooting and Repair, Testing and Adjustment, “Electronic Control Module (ECM) – Replacement”. After replacing the Product Link, recheck the system and the status of diagnostic codes.
