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11A-54 IMMOBILIZER SYSTEM (C24SE, 4JA1-T) B0024 WRONG TRANSPONDER KEY (Only 4JA1-T Engine) Step Action Value(s) Yes No 1 Was the "Immobilizer System Check" performed? Go to Step 2 Go to Immobilizer System Check 2 Check the key. Is a key peculiar to a vehicle? Go to Step 3 Refer to Diagnostic Aids 3 Check the immobilizer programming functions. Go to Step 4 Go to Step 5 4 Perform the immobilizer programming functions. Was the action complete? Go to Step 5 5 Recheck the DTC. 1. Key position is “OFF” and keep the position for more than 30 seconds. 2. Key position is “ON”. 3. Check the DTC on scan tool. Is DTC B0024 stored? Go to Step 6 Verify repair 6 Replace the transponder (Key). IMPORTANT: The replacement transponder (key) Was the action complete? Go to Step 7 7 Recheck the DTC. 1. Key position is “OFF” and keep the position for more than 30 seconds. 2. Key position is “ON”. 3. Check the DTC on scan tool. Is DTC B0024 stored? Go to Step 8 Verify repair 8 Replace the immobilizer control unit (ICU). IMPORTANT: The replacement ICU must be Was the action complete? Verify repair
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