Dtc P0504 Brake Switch A / B Correlation. Corolla Auris

Двигатель. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150
Система Управления Двигателем 2Zr-Fe. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK STOP LIGHT SWITCH ASSEMBLY (TERMINAL VOLTAGE)

INSPECT STOP LIGHT SWITCH ASSEMBLY

CHECK ECM (STP AND ST1 - VOLTAGE)

INSPECT FUSE (STOP AND IGN FUSES)

DTC P0504 Brake Switch "A" / "B" Correlation


DESCRIPTION

The stop light switch is a duplex system that transmits two signals: STP and ST1-. These two signals are used by the ECM to monitor whether or not the brake system is working properly. If the signals, which indicate the brake pedal is being depressed and released, are detected simultaneously, the ECM interprets this as a malfunction in the stop light switch and sets the DTC.

УКАЗАНИЕ:
The normal conditions are as shown in the table below. The signals can be read using the intelligent tester.

Signal
Brake Pedal Released
In Transition
Brake Pedal Depressed
STP
OFF
ON
ON
ST1-
ON
ON
OFF

DTC No.
DTC Detection Condition
Trouble Area
P0504
Conditions (a), (b) and (c) continue for 0.5 seconds or more
(1 trip detection logic):
(a) Ignition switch is turned on (IG)
(b) Brake pedal is released
(c) STP signal is OFF when ST1- signal is OFF
  1. Open or short in stop light switch signal circuit
  2. Stop light switch
  3. STOP fuse
  4. IGN fuse
  5. ECM

WIRING DIAGRAM


COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Zr-Fe.Система Sfi. Dtc P0504 Brake Switch A / B Correlation


COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Zr-Fe.Система Sfi. Dtc P0504 Brake Switch A / B Correlation


INSPECTION PROCEDURE

УКАЗАНИЕ:
  1. Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  2. STP signal conditions can be checked using the intelligent tester.
    1. Connect the intelligent tester to the DLC3.
    2. Turn the ignition switch on (IG) and turn the tester on.
    3. Select the following menu items: Powertrain / Engine and ECT / Data List / Stop Light Switch.
    4. Check the STP signal when the brake pedal is depressed and released.

      Brake Pedal Operation
      		Specified Condition
      Depressed
      		STP signal ON
      Released
      		STP signal OFF
1.CHECK STOP LIGHT SWITCH ASSEMBLY (TERMINAL VOLTAGE)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Zr-Fe.Система Sfi. Dtc P0504 Brake Switch A / B Correlation

  1. Disconnect the stop light switch assembly connector.

  1. Turn the ignition switch on (IG).

  1. Measure the voltage according to the value(s) in the table below.

    Standard voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A1-2 - Body ground
    		Ignition switch on (IG)
    		9 to 14 V
    A1-3 - Body ground
    		Ignition switch on (IG)
    		9 to 14 V

  1. Reconnect the stop light switch assembly connector.



NG
Перейдите к шагу 4
OK


2.INSPECT STOP LIGHT SWITCH ASSEMBLY


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Zr-Fe.Система Sfi. Dtc P0504 Brake Switch A / B Correlation

  1. Remove the stop light switch assembly.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Switch Position
    		Specified Condition
    1 - 2
    		Switch pin not pushed
    		Below 1 Ω
    Switch pin pushed
    		10 kΩ or higher
    3 - 4
    		Switch pin not pushed
    		10 kΩ or higher
    Switch pin pushed
    		Below 1 Ω

  1. Reinstall the stop light switch assembly.



NG
REPLACE STOP LIGHT SWITCH ASSEMBLY
OK


3.CHECK ECM (STP AND ST1 - VOLTAGE)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Zr-Fe.Система Sfi. Dtc P0504 Brake Switch A / B Correlation

  1. Disconnect the ECM connector.

  1. Turn the ignition switch on (IG).

  1. Measure the voltage according to the value(s) in the table below.

    Standard voltage:
    Tester Connection
    		Brake Pedal Operation
    		Specified Condition
    A50-35 (ST1-) - Body ground
    		Released
    		9 to 14 V
    Depressed
    		Below 1.5 V
    A50-36 (STP) - Body ground
    		Released
    		Below 1.5 V
    Depressed
    		9 to 14 V

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH - ECM)
OK

REPLACE ECM (Нажмите здесь)

4.INSPECT FUSE (STOP AND IGN FUSES)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Zr-Fe.Система Sfi. Dtc P0504 Brake Switch A / B Correlation

  1. Remove the STOP and IGN fuses from the instrument panel junction block.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    STOP fuse
    		Always
    		Below 1 Ω
    IGN fuse
    		Always
    		Below 1 Ω

  1. Reinstall the STOP and IGN fuses.



NG
REPLACE FUSE (STOP AND/OR IGN FUSES)
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - STOP LIGHT SWITCH ASSEMBLY)