Toyota RAV4 manuals

Toyota Sienna Service Manual: Brake Switch

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

DTC P0724 Brake Switch "B" Circuit High

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 or released, are detected simultaneously, the ECM interprets this as a malfunction in the stop light switch and sets the DTC.

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

DESCRIPTION

DESCRIPTION

MONITOR DESCRIPTION

This DTC indicates that the stop light switch remains on. When the stop light switch remains ON during "stop and go" driving, the ECM interprets this as a fault in the stop light switch and the MIL comes on and the ECM stores the DTC. The vehicle must stop (less than 2 mph (3 km/h)) and go (19 mph (30 km/h) or more) 5 times for two driving cycles in order to detect a malfunction.

MONITOR STRATEGY

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

TYPICAL MALFUNCTION THRESHOLDS

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT: 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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

1 CHECK OPERATION OF STOP LIGHT

  1. Check whether the stop lights turn on and off normally when the brake pedal is depressed and released.

OK: Stop lights turn on when brake pedal is depressed.

2 INSPECT STOP LIGHT SWITCH ASSEMBLY

 INSPECT STOP LIGHT SWITCH ASSEMBLY

  1. Remove the S12 stop light switch assembly.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

  1. Reinstall the stop light switch assembly.

3 READ VALUE OF INTELLIGENT TESTER (STP SIGNAL AND ST1 - VOLTAGE)

READ VALUE OF INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.
  2. Turn the ignition switch to the ON position and turn the tester on.
  3.  Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / STOP LIGHT SW.
  4. Check the STP signal when the brake pedal is depressed and released.

Standard

Standard

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

Standard voltage

 Standard voltage

4 CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - ECM)

CHECK HARNESS AND CONNECTOR

  1. Disconnect the S12 stop light switch connector.
  2. Disconnect the E4 ECM connector.
  3. Measure the resistance according to the value(s) in the table below.

Standard resistance : Check for open

Standard resistance

Check for short

Check for short

  1. Reconnect the stop light switch connector.
  2. Reconnect the ECM connector.

REPLACE ECM

Vehicle Speed Sensor "A"
DTC P0500 Vehicle Speed Sensor "A" DESCRIPTION The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU. The skid control ECU converts these ...

Idle Control System Malfunction
DTC P0505 Idle Control System Malfunction DESCRIPTION The idling speed is controlled by the ETCS (Electronic Throttle Control System). The ETCS is comprised of: 1) the one valve type throttle bod ...

Other materials:

Assist grips
Type A An assist grip installed on the ceiling can be used to support your body while sitting on the seat. Type B An assist grip installed on the pillar can be used when getting in or out of the vehicle and others. WARNING Type A: Do not use the assist grip when g ...

Glove boxes
Upper glove box Push the button. Open the lid. Lower glove box The lower glove box can be opened by pulling the lever and can be locked and unlocked by using the master key (vehicles without a smart key) or the mechanical key (vehicles with a smart key system). Unlo ...

Player Error
DTC 58-44 Player Error DTC 80-44 Player Error DESCRIPTION DTC No. DTC Detection Condition Trouble Area 58-44 Map player error is detected Radio and navigation assembly 80-44 Map player error is detected. INSPECTION PROCEDURE HINT: ...

В© 2011-2019 Copyright www.tsienna.net