DTC P0571:00 [MZR-CD (RF Turbo)]

id0102f1705500

DTC P0571:00

Brake switch circuit problem
DETECTION CONDITION
•  The PCM monitors switching in conjunction with brake switches No.1 and No.2. If either No.1 or No.2 do not switch for a continuous five times even though either No.1 or No.2 is switched from off to on or from on to off, P0571:00 is detected.
Diagnostic support note
•  This is a continuous monitor.
•  The MIL does not illuminate.
•  FREEZE FRAME DATA is not available.
•  DTC is stored in PCM memory.
POSSIBLE CAUSE
•  Brake switch malfunction
•  Open circuit between brake switch terminal C and PCM terminal 101
•  Open circuit between brake switch terminal B and body ground
•  Short to power between brake switch terminal C and PCM terminal 101
•  Short to ground circuit between brake switch terminal C and PCM terminal 101
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
•  Has FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record FREEZE FRAME DATA on repair, then go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT BRAKE SWITCH CONNECTOR FOR POOR CONNECTION
•  Switch the ignition to off.
•  Disconnect the brake switch connector.
•  Inspect for poor connection (such as damaged, pull-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 10.
No
Go to the next step.
4
INSPECT BRAKE SWITCH
•  Inspect the brake switch.
•  Is the brake switch normal?
Yes
Go to the next step.
No
Replace the brake switch, then go to Step 10.
5
INSPECT GROUND CIRCUIT OF BRAKE SWITCH NO.2 FOR OPEN CIRCUIT
•  Inspect for continuity between brake switch terminal B and body ground.
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for open circuit, then go to Step 10.
6
INSPECT SIGNAL CIRCUIT OF BRAKE SWITCH NO.2 FOR SHORT TO GROUND
•  Inspect for continuity between brake switch terminal C and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for short to ground circuit, then go to Step 10.
No
Go to the next step.
7
INSPECT INSTRUMENT CLUSTER CONNECTOR FOR POOR CONNECTION
•  Switch the ignition to off.
•  Disconnect instrument cluster connector.
•  Inspect for poor connection (such as damaged, pull-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the terminal, then go to Step 10.
No
Go to the next step.
8
INSPECT SIGNAL CIRCUIT OF BRAKE SWITCH NO.2 FOR OPEN CIRCUIT
•  Inspect for continuity between brake switch terminal C and instrument cluster terminal 101.
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for open circuit, then go to Step 10.
9
INSPECT SIGNAL CIRCUIT OF BRAKE SWITCH NO.2 FOR SHORT TO POWER
•  Switch the ignition to ON (Engine off).
•  Measure the voltage between brake switch terminal C and body ground.
•  Is the voltage B+?
Yes
Repair or replace the wiring harness for short to power circuit, then go to the next step.
No
Go to the next step.
10
VERIFY TROUBLESHOOTING OF P0571:00 COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Switch the ignition to ON (Engine off).
•  Depress and release the brake pedal more than 5 times.
•  Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No
Go to the next step.
11
VERIFY AFTER REPAIR PROCEDURE
•  Perform “AFTER REPAIR PROCEDURE”.
•  Is any DTC present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZR-CD (RF Turbo)].)
No
Troubleshooting completed.