DTC Troubleshooting: 68-21
|DTC 68-21:||Brake Pedal Position Switch Stuck OFF|
|1.||Turn the ignition switch ON (II).|
|2.||Check the BRK PRESS in the VSA DATA LIST with the HDS. Do not press the brake pedal.|
Is 0.5 V or less?
YES - Go to 3.
NO - Check for brake drag or a miss-adjusted brake pedal position switch.n
|3.||Check the BRAKE SWITCH in the VSA DATA LIST with the HDS while moving the brake pedal.|
Does it indicate ON when the pedal is pushed, and OFF when pedal is released?
YES - Intermittent failure, the system is OK at this time. Check for loose terminals between the brake pedal position switch 4P connector, the PCM connector A (44P), and the VSA modulator-control unit 37P connector. Refer to intermittent failures troubleshooting.n
NO - Go to 4.
|4.||Turn the ignition switch OFF.|
|5.||Disconnect the brake pedal position switch 4P connector.|
|6.||Connect brake pedal position switch 4P connector terminal No. 1 and No. 2 to with a jumper wire.|
|7.||Turn the ignition switch ON (II).|
|8.||Check the BRAKE SWITCH in the VSA DATA LIST with the HDS.|
Does it indicate ON?
NO - Go to 9.
|9.||Disconnect the jumper wire.|
|10.||Turn the ignition switch OFF.|
|11.||Short the SCS line with the HDS.|
|12.||Disconnect PCM connector A (44P).|
|13.||Check for continuity between brake pedal position switch 4P connector terminal No. 2 and PCM connector A (44P) terminal No. 40.|
Is there continuity?
NO - Repair open in the wire between the PCM and the brake pedal position switch.n