1. EXCEPT FOR C0 AND C5 MODELS DIAGNOSIS START CONDITION: • Battery voltage is 10 V or more. • The remote engine starter was not used to start the engine. DTC DETECTING CONDITION: Communication failure between ignition key and body integrated unit TROUBLE SYMPTOM: • Engine will not start. • The security indicator illuminates. CAUTION: When the body integrated unit is replaced, registration of the immobilizer system is required. For details, refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume. | STEP | CHECK | YES | NO | 1.CHECK IGNITION KEY. 1) Remove the ignition key from the ignition switch. 2) Insert the ignition key into the ignition switch, and then turn the ignition switch to ON. 3) Perform the Clear Memory Mode. Clear Memory Mode 4) Read the DTC of the body integrated unit. Read Diagnostic Trouble Code (DTC) | | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1574 KEY COMMUNICATION | Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: It is possible that the surrounding radio wave environment was poor. | 2.CHECK IGNITION KEY. 1) Prepare a spare ignition key that is already registered. 2) Insert the ignition key into the ignition switch, and then turn the ignition switch to ON. 3) Read the DTC of the body integrated unit. Read Diagnostic Trouble Code (DTC) | | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1574 KEY COMMUNICATION | Malfunction occurred in ignition key. | 3.CHECK DTC. Read the DTC of body integrated unit using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC) | | Perform the diagnosis of DTC B1411. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1411 IMMOBILIZER ANTENNA Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1574 KEY COMMUNICATION | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1574 KEY COMMUNICATION | 4.CHECK IMMOBILIZER ANTENNA. 1) Insert the ignition key into the ignition switch, and then turn the ignition switch to ON. 2) Perform the Clear Memory Mode. Clear Memory Mode 3) Read the DTC of the body integrated unit. Read Diagnostic Trouble Code (DTC) | | Replace the body integrated unit. Body Integrated Unit | Malfunction occurred in the immobilizer antenna. |
2. FOR C0 AND C5 MODELS DIAGNOSIS START CONDITION: • Battery voltage is 10 V or more. • The remote engine starter was not used to start the engine. DTC DETECTING CONDITION: Communication failure between ignition key and immobilizer CM TROUBLE SYMPTOM: • Engine will not start. • The security indicator illuminates. CAUTION: When the immobilizer CM is replaced, registration of the immobilizer system is required. For details, refer to the “REGISTRATION MANUAL FOR IMMOBILIZER” provided as a separate volume. | STEP | CHECK | YES | NO | 1.CHECK IGNITION KEY. 1) Remove the ignition key from the ignition switch. 2) Insert the ignition key into the ignition switch, and then turn the ignition switch to ON. 3) Perform the Clear Memory Mode. Clear Memory Mode 4) Read the DTC of the immobilizer CM. Read Diagnostic Trouble Code (DTC) | | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1574 KEY COMMUNICATION | Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: It is possible that the surrounding radio wave environment was poor. | 2.CHECK IGNITION KEY. 1) Prepare a spare ignition key that is already registered. 2) Insert the ignition key into the ignition switch, and then turn the ignition switch to ON. 3) Read the DTC of the immobilizer CM. Read Diagnostic Trouble Code (DTC) | | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1574 KEY COMMUNICATION | Malfunction occurred in ignition key. | 3.CHECK DTC. Using the Subaru Select Monitor, read DTC of immobilizer CM. Read Diagnostic Trouble Code (DTC) | | Perform the diagnosis of DTC B1411. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1411 IMMOBILIZER ANTENNA Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1574 KEY COMMUNICATION | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1574 KEY COMMUNICATION | 4.CHECK IMMOBILIZER ANTENNA. 1) Insert the ignition key into the ignition switch, and then turn the ignition switch to ON. 2) Perform the Clear Memory Mode. Clear Memory Mode 3) Read the DTC of the immobilizer CM. Read Diagnostic Trouble Code (DTC) | | Replace the immobilizer CM. Immobilizer Control Module | Malfunction occurred in the immobilizer antenna. |
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