|
|
11.14 Double Brake Switch Failure codes: P0571, P0504 No. Operating steps Result Follow up steps 1 Put the ignition switch to “ON”.
Next step Yes Next step 2 Pull out brake switch joint on harness, and then use a multimeter to check if it is short or break circuit between 1#, 2# pins of this joint and 21#, 58# pins of ECU. No Check the circuit Yes Next step 3 Close the ignition switch, and then check if an around 12V battery voltage is present on 3# pin of the switch joint. No Check the circuit Yes Next step 4 Open the ignition switch, and then check if an around 12V battery voltage is present on 4# pin of the switch joint. No Check the circuit Yes Next step 5 Release brake pedal, disconnect sensor connector, and then check if 1# and 3# pins cut off. No Replace the brake switch Yes Next step 6 Release brake pedal, disconnect sensor connector, and then check if 2# and 3# pins conducts. No Replace the brake switch Yes Next step 7 Apply brake pedal, disconnect sensor connector, and then check if 1# and 3# pins conducts. No Replace the brake switch Yes Check other part 8 Apply brake pedal, disconnect sensor connector, and then check if 2# and 4# pins cut off. No Replace the brake switch
|