Brake Pedal Position Switch Signal Circuit Troubleshooting

Turn the ignition switch to ON (II).
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 ).
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.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect the brake pedal position switch 4P connector.
Disconnect PCM connector E (31P).
Check for continuity between PCM connector terminal E8 and body ground.
Is there continuity?

YES - Repair short in the wire between the PCM (E8) and the No. 13 HORN, STOP (15 A) fuse. Replace the No. 13 HORN, STOP (15 A) fuse.

NO - Go to step 9.

Fig 1: Checking For Continuity Between PCM Connector Terminal E8 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between PCM connector terminal E8 and brake pedal position switch 4P connector terminal No. 2.
Is there continuity?

YES - Repair open in the wire between the brake pedal position switch and the No. 13 HORN, STOP (15 A) fuse. Inspect the brake pedal position switch (see BRAKE PEDAL AND BRAKE PEDAL POSITION SWITCH ADJUSTMENT ).

NO - Repair open in the wire between the PCM (E8) and the brake pedal position switch.

Fig 2: Checking For Continuity Between PCM Connector Terminal E8 & Brake Pedal Position Switch 4P Connector Terminal No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.