October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Engine Control System / Engine Mechanical - Testing & Troubleshooting Expand All (for easy ctrl-f) Collapse All Connector View Learning Reset Clear Check Repair Procedures And Tests General Information Inspection Rewrite Component Location Index Repair Regeneration Symptom Troubleshooting Symptom Troubleshooting Index Removal & Installation Inspection Adjustment Description & Operation Replacement Symptom Troubleshooting Index for Viewer After warming up, idle speed is above specifications without load (MIL works OK, no DTCs set) After warming up, idle speed is below specifications without load (MIL works OK, no DTCs set) Auto idle stop system does not operate (With Auto Idle Stop System) (2020 2021) Auto idle stop system does not operate (With Auto Idle Stop System) (2022 2023 2024 2025) Auto idle stop system indicator (amber) blinks (With Auto Idle Stop System) (2020 2021 2022 2023) Auto idle stop system indicator (green/amber) does not come on(With Auto Idle Stop System) (2020 2021) Auto idle stop system indicator (green/amber) does not come on (With Auto Idle Stop System) (2022 2023 2024 2025) Cold fast idle too high (MIL works OK, no DTCs set) Cold fast idle too low (MIL works OK, no DTCs set) Difficult to refuel (MIL works OK, no DTCs set) Engine is hard to start (MIL works OK, no DTCs set) Engine stalls (MIL works OK, no DTCs set) Engine starts but stalls immediately (MIL works OK, no DTCs set, immobilizer indicator stays on or flashes) Engine will not start (MIL works OK, no DTCs set) Engine will not start (MIL works OK, no DTCs set, immobilizer indicator stays on or flashes) Engine will not start and HDS does not communicate with the PCM (MIL comes on and stays on, no DTCs set) HDS does not communicate with the PCM or the vehicle Idle speed fluctuates (MIL works OK, no DTCs set) Idle stop time is short (With Auto Idle Stop System) (2020 2021) Idle stop time is short (With Auto Idle Stop System) (2022 2023 2024 2025) Low power (MIL works OK, no DTCs set) MIL comes on and stays on, or never comes on at all, no DTCs set Test Troubleshooting How to Information