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ON-BOARD DIAGNOSTIC [L3 WITH TC] 01-02–175 01-02 Diagnostic procedure POSSIBLE CAUSE • Brake switch malfunction • Poor connection of the brake switch connector or the PCM connector • Short to the power supply between brake switch terminal D and PCM connector terminal 1AB • Open circuit between brake switch terminal D and PCM connector terminal 1AB • Open circuit between the battery positive terminal and brake switch terminal B • PCM malfunction STEP INSPECTION ACTION 1 VERIFY FREEZE FRAME DATA HAS BEEN • Has the FREEZE FRAME DATA been recorded? Yes Go to the next step. No Record FREEZE FRAME DATA on the repair order, then go 2 VERIFY RELATED REPAIR INFORMATION • Check for related Service Bulletins and/or on- line repair information availability. • Is any related repair information available? Yes Perform the repair or diagnosis according to the available • If the vehicle is not repaired, go to the next step. No Go to the next step. 3 CLASSIFY HIGH INPUT OR LOW INPUT • Connect the M-MDS to the DLC-2. • Access the BOO PID. • Verify the BOO PID during brake pedal operation. • Is the BOO PID always off? Yes Go to the next step. No Go to Step 10. 4 INSPECT BRAKE SWITCH CONNECTOR FOR • Turn the ignition switch to off. • Disconnect the brake switch connector. • Inspect for poor connection (such as damaged pulled-out terminals, corrosion). • Is there any malfunction? Yes Repair or replace the terminal, then go to Step 14. No Go to the next step. DTC P0703 Brake switch No.1 circuit malfunction D B BRAKE SWITCH WIRING HARNESS SIDE CONNECTOR BRAKE B+ PCM 1AB A B C D 9 8 4 4 7 6 10 13 10 12 PCM WIRING HARNESS SIDE CONNECTOR 1BE 1BA 1AW 1AS 1AO 1AK 1AG 1AC 1Y 1U 1Q 1M 1E 1A 1I 1BH 1BD 1AZ 1AV 1AR 1AN 1AJ 1AF 1AB 1X 1T 1P 1H 1D 1L 1BG 1BC 1AY 1AU 1AQ 1AM 1AI 1AE 1AA 1W 1S 1O 1G 1C 1K 1BF 1BB 1AX 1AT 1AP 1AL 1AH 1AD 1Z 1V 1R 1N 1F 1B 1J 1871-1U-06B(01-02).fm 175 ページ 2006年3月15日 水曜日 午前10時32分 |