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IGNITION SWITCH CHASSIS ELECTRICAL 54A-11 DIAGNOSTIC TROUBLE CODE Code No.11 Trouble related to the communication with ignition key DIAGNOSIS CODE SET CONDITIONS This code is set if the ID code is sent to the POSSIBLE CAUSES • Damaged harness wires and connectors • Malfunction of ignition key • Malfunction of immobilizer ECU DIAGNOSIS PROCEDURE Step 1. Check that the engine is started with Q: Is the check result normal? YES : Replace the ignition key that cannot start the engine with new registered ignition key. NO : Go to Step 2. Step 2. MUT-III diagnosis code Check that the immobilizer ECU sets a diagnosis Q: Is the diagnosis code set? YES (diagnosis cede No.11 is set) : Replace the immobilizer ECU and register the ignition YES (diagnosis cede No.12 is set) : Code No.12 The ignition key is unregistered or ID codes . NO : The procedure is complete. Code No.12 The ignition key is unregistered or ID codes do not match. DIAGNOSIS CODE SET CONDITIONS This code is set when the ignition key is not POSSIBLE CAUSES • The ignition key is not registered with the immobilzer ECU. • Malfunction of immobilizer ECU DIAGNOSIS PROCEDURE Resister the encrypted code. Q: Was the encrypted code registered? YES : The procedure is complete. NO : Replace the immobilizer ECU and register Ignition Key Ring and Immobilizer-ECU Circuit HIGH-FREQENCY POWER IMMOBILIZER- TRANSPONDER |