Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM10000000214OF
Model Year Start: 2022 Model: RAV4 Prod Date Range: [12/2021 -           ]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster): TEST MODE PROCEDURE; 2022 - 2024 MY RAV4 RAV4 HV [12/2021 -        ]

TEST MODE PROCEDURE

SENSOR CHECK USING DEALER MODE (SIGNAL CHECK)

NOTICE:

  • After performing "Calibration", perform a master cylinder pressure sensor check.
  • After replacing or removing and installing a speed sensor or skid control sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors or skid control sensors are operating correctly.
  • After replacing or removing and installing a speed sensor rotor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors or skid control sensors are operating correctly.

HINT:

  • Signals related to the electronically controlled brake system can be inspected by performing a Dealer Mode (Signal Check) inspection. During the inspection, the display of items determined normal by the skid control ECU changes from incomplete to complete.
  • During Dealer Mode (Signal Check), the VSC and TRAC do not operate regardless of whether the system is normal or a malfunction is detected.
  • If a sensor is malfunctioning, ABS does not operate and the ABS warning light, brake system warning light (yellow indicator) and slip indicator light illuminate.
  • When entering Dealer Mode (Signal Check), the No. 2 skid control ECU (brake actuator assembly) communicates with the forward recognition camera to judge whether the vehicle is equipped with the pre-collision system. Therefore, do not exit Dealer Mode (Signal Check) within 5 seconds of entering Dealer Mode (Signal Check).
  • Even during Dealer Mode (Signal Check), if there is a system malfunction that causes brake hold control to be prohibited, when the vehicle is under the following conditions and the brake hold switch (integration control and panel assembly) is turned on, the brake hold operated indicator light blinks.
    • Vehicle Conditions:
      1. The driver door is closed.
      2. The driver seat belt is fastened.

(a) Procedure to Enter Dealer Mode (Signal Check)

(1) Turn the ignition switch off.

(2) Check that the steering wheel is centered.

(3) Check that the shift lever is in P.

(4) Connect the GTS to the DLC3.

(5) Turn the ignition switch to ON.

(6) Turn the GTS on.

(7) Switch the skid control ECU to Dealer Mode (Signal Check) using the GTS. Enter the following menus: Chassis / Brake/EPB / Utility / Signal Check.

Chassis > Brake/EPB > Utility

Tester Display

Signal Check

HINT:

After entering Dealer Mode (Calibration), maintain Dealer Mode (Calibration) condition for 5 seconds. If Dealer Mode (Calibration) is ended before 5 seconds elapse, enter Dealer Mode (Calibration) again, wait 5 seconds, and then check for DTCs again.

(b) Confirm the system has entered Dealer Mode (Signal Check)

(1) Confirm that the ABS warning light, brake system warning light (yellow indicator) and slip indicator light indicate the Dealer Mode pattern (blinking at 0.25 second intervals).

HINT:

  • When in Dealer Mode (signal check), "Traction Control Turned Off" is displayed on the multi-information display.
  • When entering Dealer Mode (Signal Check), if the parking brake is engaged, the parking brake indicator light (red) will illuminate, and if the parking brake is not engaged, the parking brake indicator light (red) will blink in the Dealer Mode pattern (blinking at 0.25 second intervals).

(c) Master Cylinder Pressure Sensor Check

(1) With the vehicle stopped, release the brake pedal for 1 second or more and check that the value of Dealer Mode (Signal Check) Inspection Item "Output in Master Cylinder Pressure Sensor" changes from incomplete to complete.

HINT:

  • The status of the ABS warning light, brake system warning light (yellow indicator) and slip indicator light will not change.
  • If the master cylinder pressure sensor is normal and the above step is performed when in Dealer Mode (Signal Check), the master cylinder pressure sensor check will complete normally.

(d) Speed Sensor Check

NOTICE:

Before performing the speed sensor check, complete the master cylinder pressure sensor check.

(1) Turn the ignition switch to ON (READY).

(2) With the steering wheel held straight, accelerate the vehicle to a speed of 45 km/h (28 mph) or more without spinning the wheels.

(3) Check that the ABS warning light goes off.

NOTICE:

  • If the sensor check does not complete successfully or a malfunctioning sensor is detected, the ABS warning light indicates the Dealer Mode pattern (blinking at 0.25 second intervals) and the ABS system will not operate.
  • If the vehicle is driven at 80 km/h (50 mph) or more after the ABS warning light turns off, the speed sensor check will be performed again. In this situation, the ABS warning light will start blinking again.
  • The speed sensor check may not complete if the speed sensor check is started while turning the steering wheel or spinning the wheels.

(4) Stop the vehicle.

(e) End of Sensor Check

(1) If the sensor check completes successfully, the ABS warning light turns off when the vehicle is being driven, and indicates the Dealer Mode pattern (blinking at 0.25 second intervals) when the vehicle is stopped.

NOTICE:

  • When all Dealer Mode (Signal Check) Inspection Items are complete, the sensor check is complete.
  • If the sensor checks have not completed, the ABS warning light will remain blinking while the vehicle is being driven, and the ABS will not operate.
  • If any malfunctions are detected during Dealer Mode (Signal Check), the ABS warning light, brake system warning light (yellow indicator) or slip indicator light remains illuminated.
  • If any DTCs are output or if Dealer Mode (Signal Check) Inspection Items do not complete even after repeated attempts, repair or replace the malfunctioning part.

(f) End of Dealer Mode (Signal Check)

(1) Turn the ignition switch off.

(2) Disconnect the GTS.

(g) Dealer Mode (Signal Check) Inspection Item Chart

Item Name

Range

Judgment Description

Trouble Area

Output Signal of Front Speed Sensor RH

Incomplete/complete
  • Check for foreign matter
  • Check the gap between the sensor and rotor
  • Open or short in speed sensor
  • Open or short in wire harness
  • Improperly connected connector, deformation or corrosion of terminals
  • Sensor installation
  • Front speed sensor rotor RH (front axle hub sub-assembly RH)

Output Signal of Front Speed Sensor LH

Incomplete/complete
  • Check for foreign matter
  • Check the gap between the sensor and rotor
  • Open or short in speed sensor
  • Open or short in wire harness
  • Improperly connected connector, deformation or corrosion of terminals
  • Sensor installation
  • Front speed sensor rotor LH (front axle hub sub-assembly LH)

Output Signal of Rear Speed Sensor RH

Incomplete/complete
  • Check for foreign matter
  • Check the gap between the sensor and rotor
  • Open or short in skid control sensor
  • Open or short in wire harness
  • Improperly connected connector, deformation or corrosion of terminals
  • Sensor installation
  • Rear speed sensor rotor RH (rear axle hub and bearing assembly RH)

Output Signal of Rear Speed Sensor LH

Incomplete/complete
  • Check for foreign matter
  • Check the gap between the sensor and rotor
  • Open or short in skid control sensor
  • Open or short in wire harness
  • Improperly connected connector, deformation or corrosion of terminals
  • Sensor installation
  • Rear speed sensor rotor LH (rear axle hub and bearing assembly LH)

Change in Output Signal of Front Speed Sensor RH

Incomplete/complete

Check the stability of the sensor input waveform
  • Foreign object attached to speed sensor
  • Front speed sensor rotor RH (front axle hub sub-assembly RH)

Change in Output Signal of Front Speed Sensor LH

Incomplete/complete

Check the stability of the sensor input waveform
  • Foreign object attached to speed sensor
  • Front speed sensor rotor LH (front axle hub sub-assembly LH)

Change in Output Signal of Rear Speed Sensor RH

Incomplete/complete

Check the stability of the sensor input waveform
  • Foreign object attached to skid control sensor
  • Rear speed sensor rotor RH (rear axle hub and bearing assembly RH)

Change in Output Signal of Rear Speed Sensor LH

Incomplete/complete

Check the stability of the sensor input waveform
  • Foreign object attached to skid control sensor
  • Rear speed sensor rotor LH (rear axle hub and bearing assembly LH)

Output in Master Cylinder Pressure Sensor

Incomplete/complete

Evaluate the master cylinder pressure sensor zero point voltage
  • Open or short in master cylinder pressure sensor
  • Open or short in stop light switch assembly circuit or defective connector connection
  • Stop light switch assembly stuck off malfunction
  • Stop light switch assembly stuck on malfunction

Learning of Stroke Sensor Zero Point

Incomplete/complete

Check the stroke sensor zero point output value
  • Brake pedal stroke sensor zero point calibration incomplete
  • Open or short in wire harness
  • Improperly connected connector, deformation or corrosion of terminals
  • Brake pedal stroke sensor assembly