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ON-BOARD DIAGNOSTIC [BCM] 09-02F–15 09-02F End Of Sie DTC B1873[BCM] id0902f5832200 Diagnostic procedure End Of Sie DTC B1873 Hazard switch input circuit short to ground DETECTION Short to GND in wiring harness between BCM and hazard warning switch POSSIBLE • Short to GND in wiring harness between BCM terminal 3J and hazard warning switch terminal C • Hazard warning switch malfunction • BCM malfunction STEP INSPECTION ACTION 1 INSPECT HAZARD WARNING SWITCH • Disconnect the hazard warning switch connector. • Inspect the hazard warning switch connector terminals for poor connection (such as • Is there any malfunction? Yes Repair or replace the terminal, then go to Step 5. No Go to the next step. 2 INSPECT BCM CONNECTOR • Disconnect the BCM connector. • Inspect the BCM connector terminals for poor connection (such as damaged/pulled- • Is there any malfunction? Yes Repair or replace the terminal, then go to Step 5. No Go to the next step. 3 INSPECT HAZARD WARNING SWITCH • Inspect for continuity between BCM terminal 3J (wiring harness-side) and body GND. • Is there continuity? Yes Repair or replace the wiring harness for a possible short to No Go to the next step. 4 INSPECT HAZARD WARNING SWITCH • Inspect the hazard warning switch. (See 09-18-15 HAZARD WARNING • Is there any malfunction? Yes Replace the hazard warning switch, then go to the next No Go to the next step. 5 VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the BCM memory using the M-MDS. • Perform the self-test. (See 09-02F-26 BCM SELF-TEST[BCM].) • Is the same DTC present? Yes Replace the BCM. No DTC troubleshooting completed. C HAZARD WARNING SWITCH BCM 3J B HAZARD WARNING SWITCH WIRING HARNESS-SIDE CONNECTOR BCM WIRING HARNESS-SIDE CONNECTOR 3E 3G 3I 3K 3M 3O 3A 3C 3N 3L 3P 3H 3D 3B 3F 3J 3Q 3R 3S 3T 3U 3V 3W 3X A C D B 1871-1U-06B(09-02F).fm 15 ページ 2006年3月15日 水曜日 午前11時41分 |