DTC Troubleshooting: U3502 (PGM - FI System (3.5L Engine)) (2025): Notes

DTC U3502  : Input Power A Circuit High Voltage

How to use this service information .

NOTICE: 

Before you troubleshoot, review the How to Troubleshoot - Refer to: How to Troubleshoot the Fuel and Emissions Systems(3.5L Engine)  or How to Troubleshoot the Fuel and Emissions Systems(3.0L Engine) .

NOTE: 

• If a high voltage battery (24 V, etc.) is connected to the vehicle, this DTC can be stored.
• Check the corrosion and looseness at the 12 volt battery terminals, and the ground cable and terminals in the engine compartment.