Brake Pedal Position Switch Signal Circuit (K24Z7/K24V7)

Brake Pedal Position Switch Signal Circuit Troubleshooting 

1. Brake pedal position switch signal check 1

   -1. Press the engine start/stop button to select the ON mode.

   -2. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current Conditions
   	Values	Unit	Values	Unit
   BRAKE SWITCH	OFF

   Do the current condition(s) match the threshold?

   YES 

   Go to step 2.

   NO 

   Inspect the brake pedal position switch .

2. Brake pedal position switch signal check 2

   -1. Press the brake pedal while checking the parameter(s) below with the HDS.

   Signal	Threshold		Current Conditions
   	Values	Unit	Values	Unit
   BRAKE SWITCH	ON

   Do the current condition(s) match the threshold?

   YES 

   The brake pedal position switch signal circuit (STOP SW line) is OK.

   NO 

   Go to step 3.

3. Shorted wire check (STOP SW line)

   -1. Press the engine start/stop button to select the OFF mode.

   -2. Jump the SCS line with the HDS.

   -3. Disconnect the following connectors.

   PCM connector A (49P)

   Brake pedal position switch 4P connector

   -4. Check for continuity between test points 1 and 2.

   Test condition	OFF mode
   	PCM connector A (49P): disconnected
   	Brake pedal position switch 4P connector: disconnected
   Test circuit	STOP SW
   Test point 1	PCM connector A (49P) No. 13 (LT GRN)
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Repair a short in the STOP SW wire between the PCM (A13) and the No. A17 (15 A) fuse in the under-hood fuse relay box. Also, replace the No. A17 (15 A) fuse.

   NO 

   The STOP SW wire is not shorted. Go to step 4.

4. Open wire check (STOP SW line)

   -1. Connect terminals A and B with a jumper wire.

   Terminal A	Brake pedal position switch 4P connector No. 1 (LT GRN)
   Terminal B	Body ground

   Courtesy of HONDA, U.S.A., INC.

   -2. Check for continuity between test points 1 and 2.

   Test condition	OFF mode
   	PCM connector A (49P): disconnected
   	Brake pedal position switch 4P connector: disconnected

   	Brake pedal position switch 4P connector terminal No. 1: jumped to body ground
   Test circuit	STOP SW
   Test point 1	PCM connector A (49P) No. 13 (LT GRN)
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The STOP SW wire is OK. Repair an open in the +B STOP wire between the brake pedal position switch and the No. B17 (10 A) fuse in the under-hood fuse relay box. Inspect the brake pedal position switch .

   NO 

   Repair an open in the STOP SW wire between the PCM (A13) and the brake pedal position switch.