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Home >> Acura >> 2011 >> TL Base >> Repair and Diagnosis >> Engine Performance >> System >> Idle Control System >> Brake Pedal Position Switch Signal Circuit Troubleshooting
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Brake Pedal Position Switch Signal Circuit Troubleshooting

  1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
  2. Check the BRAKE SWITCH in the DATA LIST with the HDS

    Does it indicate OFF? 

    YES  -Go to step 3

    NO  -Inspect the brake pedal position switch (see BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT )

  3. Press the brake pedal, and check the BRAKE SWITCH in the DATA LIST with the HDS

    Does it change to ON? 

    YES  -The brake pedal position switch signal circuit (BKSW line) is OK

    NO  -Go to step 4

  4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
  5. Jump the SCS line with the HDS
  6. Disconnect the brake pedal position switch 4P connector
  7. Disconnect PCM connector A (49P)
  8. Check for continuity between PCM connector terminal A8 and body ground
    Fig 1: Checking Continuity Between PCM Connector Terminal A8 And Body Ground
    G05987545Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair short in the wire between the PCM (A8) and the brake pedal position switch Also replace the No 10 HORN/STOP (20 A) fuse in the under-hood fuse/relay box

    NO  -Go to step 9

  9. Connect brake pedal position switch 4P connector terminal No 2 to body ground with a jumper wire
    Fig 2: Connecting Brake Pedal Position Switch 4P Connector Terminal 2 To Body Ground With Jumper Wire
    G05987546Courtesy of AMERICAN HONDA MOTOR CO., INC.
  10. Check for continuity between PCM connector terminal A8 and body ground
    Fig 3: Checking Continuity Between PCM Connector Terminal A8 And Body Ground
    G05987547Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair open in the wire between the brake pedal position switch, and also replace the No 10 HORN/STOP (20 A) fuse in the under-hood fuse/relay box Inspect the brake pedal position switch (see BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT )

    NO  -Repair open in the wire between the PCM (A8) and the brake pedal position switch