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P3000-603 HBC-513 < COMPONENT DIAGNOSIS > D E F G H I J K L M A B HBC N O P P3000-603 Description INFOID:0000000004212118 The hybrid vehicle control ECU monitors its internal operation and detects malfunctions. DTC Logic INFOID:0000000004212119 DTC DETECTION LOGIC Diagnosis Procedure INFOID:0000000004212120 1. PRECONDITIONING • Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system. • After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. • Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly. >> GO TO 2. 2. CHECK DTC OUTPUT (HYBRID SYSTEM) 1. Turn ignition switch ON. 2. Check DTC. Is DTC detected? YES >> Go to Diagnosis Procedure relevant to output DTC. NO >> GO TO 3. 3. REPLACE HYBRID VEHICLE CONTROL ECU Replace the hybrid vehicle control ECU (See HBC-644, "Removal and Installation" ). >> GO TO 4. 4. CLEAR DTC 1. Turn ignition switch ON. 2. Check DTC. >> GO TO 5. 5. RECONFIRM DTC OUTPUT (HYBRID SYSTEM) 1. Turn ignition switch ON. 2. Check DTC. DTC No. INF code Trouble diagnosis name DTC detecting condition Possible cause P3000 603 HV battery malfunction A HV battery inverter cooling • Hybrid vehicle control ECU Result: DTCs other than P3000-603 are output. Result: DTC P0A09-591 is output. Result: DTCs other than P3000-603 are output. |