Engine Control System Diagnostics - Troubleshooting

• Troubleshooting
  • DTC Troubleshooting: U0101 (PGM - FI System (3.5L Engine)) (2022 2023 2024)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0101 (PGM - FI System (3.5L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0103 (PGM - FI System (3.0L Engine)) (2022 2023 2024)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0103 (PGM - FI System (3.0L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0103 (PGM - FI System (3.5L Engine)) (2022 2023 2024)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0103 (PGM - FI System (3.5L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0104 (PGM - FI System (3.0L Engine)) (2022 2023 2024)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0104 (PGM - FI System (3.0L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0104 (PGM - FI System (3.5L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0114 (PGM - FI System (3.0L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0114 (PGM - FI System (3.5L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0122 (PGM - FI System (3.0L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0122 (PGM - FI System (3.5L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0128 (PGM - FI System (3.0L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0128 (PGM - FI System (3.5L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0129 (PGM - FI System (3.0L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0129 (PGM - FI System (3.5L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0131 (PGM - FI System (3.0L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0131 (PGM - FI System (3.5L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0141 (PGM - FI System (3.0L Engine)) (2025)
    • Notes
    • Overview
  • DTC Troubleshooting: U0141 (PGM - FI System (3.5L Engine)) (2025)
    • Notes
    • Overview
  • DTC Troubleshooting: U0146 (PGM - FI System (3.0L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0146 (PGM - FI System (3.5L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0151 (PGM - FI System (3.0L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0151 (PGM - FI System (3.5L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0155 (PGM - FI System (3.0L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U0155 (PGM - FI System (3.5L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U01B0 (PGM - FI System (3.0L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
    • +B_BATT_SNSR, LIN(ACG) [LIN] Circuit Inspection
    • Component Connected to LIN(ACG) [LIN] Circuit Inspection
    • 12 Volt Battery Sensor Inspection
    • 12 Volt Battery Sensor Circuit Inspection
    • PCM Inspection
  • DTC Troubleshooting: U01B0 (PGM - FI System (3.5L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
    • +B_BATT_SENSOR, LIN(ACG) [LIN] Circuit Inspection
    • Component Connected to LIN(ACG) [LIN] Circuit Inspection
    • 12 Volt Battery Sensor Inspection
    • 12 Volt Battery Sensor Circuit Inspection
    • PCM Inspection
  • DTC Troubleshooting: U0298 (PGM - FI System (3.0L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
    • IG1_VSA/ABS, LIN(ACG) [LIN] Circuit Inspection
    • Component Connected to LIN(ACG) [LIN] Circuit Inspection
    • DC-DC Converter Inspection
    • DC-DC Converter Circuit Inspection
    • PCM Inspection
  • DTC Troubleshooting: U0298 (PGM - FI System (3.5L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
    • IG1_VSA/ABS, LIN(ACG) [LIN] Circuit Inspection
    • Component Connected to LIN(ACG) [LIN] Circuit Inspection
    • DC-DC Converter Inspection
    • DC-DC Converter Circuit Inspection
    • PCM Inspection
  • DTC Troubleshooting: U0301 (PGM - FI System (3.0L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
    • PCM Software Inspection
  • DTC Troubleshooting: U0301 (PGM - FI System (3.5L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
    • PCM Software Inspection
  • DTC Troubleshooting: U1101 (PGM - FI System (3.5L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U129E (PGM - FI System (3.0L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U129E (PGM - FI System (3.5L Engine))
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U187F (PGM - FI System (3.0L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
    • PCM Inspection
  • DTC Troubleshooting: U3500 (PGM - FI System (3.0L Engine)) (2025)
    • Notes
    • Overview
  • DTC Troubleshooting: U3500 (PGM - FI System (3.5L Engine)) (2025)
    • Notes
    • Overview
  • DTC Troubleshooting: U3501 (PGM - FI System (3.0L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
    • +B_IGP Circuit Inspection
    • FI_MAIN_RLY_OUT, FI_MAIN_RLY_CL- Open Wire Inspection
    • FI_MAIN_RLY_OUT Shorted Wire Inspection
    • Components Connected to FI_MAIN_RLY_OUT Circuit Inspection
    • PCM Inspection
  • DTC Troubleshooting: U3501 (PGM - FI System (3.5L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
    • +B_IGP Circuit Inspection
    • FI_MAIN_RLY_OUT, FI_MAIN_RLY_CL- Open Wire Inspection
    • FI_MAIN_RLY_OUT Shorted Wire Inspection
    • Components Connected to FI_MAIN_RLY_OUT Circuit Inspection
    • PCM Inspection
  • DTC Troubleshooting: U3502 (PGM - FI System (3.0L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
  • DTC Troubleshooting: U3502 (PGM - FI System (3.5L Engine)) (2025)
    • Notes
    • Overview
    • Inspection Outline
    • Confirmation Procedure
    • Related Information
    • HDS Function
• How to Information
  • How to Troubleshoot the Fuel and Emissions Systems(3.0L Engine)
    • Before Troubleshooting
    • System Indicator
    • How to Read DTCs with the HDS
    • If the MIL did not stay on
    • If you cannot duplicate the DTC
    • On-Board Snapshot
    • HDS Clear Command
    • Scan Tool Clear Command
    • How to End a Troubleshooting Session (required after any troubleshooting)
    • How to Troubleshoot Circuits at the PCM Connectors
    • OBD Status
  • How to Troubleshoot the Fuel and Emissions Systems(3.5L Engine)
    • Before Troubleshooting
    • System Indicator
    • How to Read DTCs with the HDS
    • If the MIL did not stay on
    • If you cannot duplicate the DTC
    • On-Board Snapshot
    • HDS Clear Command
    • Scan Tool Clear Command
    • How to End a Troubleshooting Session (required after any troubleshooting)
    • How to Troubleshoot Circuits at the PCM Connectors
    • OBD Status
• DTC Troubleshooting Index
  • Fuel and Emissions Systems DTC Troubleshooting Index (3.0L Engine (USA/Canada models)) (2022 2023 2024)
  • Fuel and Emissions Systems DTC Troubleshooting Index (3.0L Engine (USA/Canada models)) (2025)
  • Fuel and Emissions Systems DTC Troubleshooting Index (3.5L Engine (USA/Canada models)) (2025)