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ON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)] 09-02B–5 09-02B SECURITY LIGHT 11, DTC B1681/P1260[IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)] id0902e3800600 Diagnostic Procedure SECURITY LIGHT: 11 No detected communication with the coil antenna DTC: B1681/P1260 DETECTION CONDITION • No detected communication with the coil antenna POSSIBLE CAUSE • Coil antenna malfunction • Instrument keyless control module • Malfunction in the related wiring harnesses STEP INSPECTION ACTION 1 INSPECT COIL ANTENNA POWER SUPPLY SYSTEM • Disconnect the coil antenna connector. • Turn the ignition switch to the ON position. • Measure the voltage at coil antenna terminal D. — Is the voltage 8 V or more? Yes Go to the next step. No Repair the wiring harness. 2 INSPECT WIRING HARNESS BETWEEN COIL ANTENNA AND GROUND • Turn the ignition switch to the LOCK position. • Inspect the wiring harness between coil antenna terminal C and ground for the following: — Open circuit • Is the wiring harness normal? Yes Go to the next step. No Repair the wiring harness. 3 INSPECT COIL ANTENNA INPUT SIGNAL CIRCUIT • Connect the coil antenna connector. • Turn the ignition switch to the ON position. • Measure the voltage at coil antenna terminal B. — Is the voltage 8 V or more? Yes Go to Step 7. No Go to the next step. 4 INSPECT COIL ANTENNA INPUT SIGNAL CIRCUIT • Turn the ignition switch to the LOCK position. • Disconnect the keyless control module connector. • Turn the ignition switch to the ON position. • Measure the voltage at keyless control module terminal 3U. Yes Replace the keyless control module and perform the No Go to the next step. 5 INSPECT COMMUNICATION CIRCUIT (INPUT) FOR CONTINUITY • Turn the ignition switch to the LOCK position. • Is there continuity between coil antenna terminal B and keyless control module terminal 3U? Yes Go to the next step. No Repair the wiring harness. IG1 D C B A 3V 3U 2B KEYLESS CONTROL COIL ANTENNA 1871-1U-06B(09-02B).fm 5 ページ 2006年3月15日 水曜日 午前11時39分 |