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.
■
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 ECM/PCM connector A (49P).
Check for continuity between ECM/PCM connector terminal A42 and body ground.
Is there continuity?
YES
-
Repair short in the wire between the ECM/PCM (A42) and the brake pedal position switch. Replace the No. 24 STOP, HORN (15 A) fuse.■
NO
-
Go to
Step 9
.
Connect brake pedal position switch 4P connector terminal No. 2 to body ground with a jumper wire.
Check for continuity between ECM/PCM connector terminal A42 and body ground.
Is there continuity?
YES
-
Repair open in the wire between the brake pedal position switch and the No. 24 STOP, HORN (15 A) fuse.
Inspect the brake pedal position switch.
■
NO
-
Repair open in the wire between the ECM/PCM (A42) and the brake pedal position switch.■