Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Test Mode Procedure

TEST MODE PROCEDURE

SENSOR CHECK USING DEALER MODE (SIGNAL CHECK)

NOTICE:

  • After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed 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 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 (brake actuator assembly) changes from incomplete to complete.
  • During Dealer Mode (Signal Check), the VSC system does 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 and slip indicator lights illuminate.
  • 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 (electric parking brake switch 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) Apply the parking brake.

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

(4) Connect the GTS to the DLC3.

(5) Turn the ignition switch to ON.

(6) Check that the steering wheel is centered.

(7) Turn the GTS on.

(8) Switch the skid control ECU (brake actuator assembly) to Dealer Mode (Signal Check) using the GTS.

Chassis > Brake/EPB > Utility

Tester Display

Signal Check

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

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

HINT:

  • If the ABS warning light or slip indicator light remains illuminated or does not illuminate when Dealer Mode (Signal Check) is entered, a component or wire harness may be malfunctioning.
  • 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) Booster malfunction check (w/ Brake Pedal Load Sensing Switch)

(1) Depress the brake pedal several times with the engine stopped to release the vacuum from the brake booster assembly.

(2) Turn the ignition switch on (IG) (engine stopped) and depress the brake pedal at a pedal force of approximately 74 N (7.5 kgf, 16.6 lbf) or above for 1 second or more and check that the warning light illuminates. (Malfunction check)

(3) After the booster malfunction check is complete, maintain a pedal force of approximately 74 N (7.5 kgf, 16.6 lbf) or above on the brake pedal and turn on the engine. Immediately release the brake pedal and check that the warning light turns off. (Normal status check)

NOTICE:

Before checking again after starting the engine, exit and then activate the test mode and depress the brake pedal several times with the engine stopped to release the booster vacuum.

(d) Speed Sensor Check

(1) Start the engine.

(2) With the steering wheel is centered, accelerate the vehicle to a speed of 45 km/h (28 mph) or more without spinning the wheels for 1 second or more.

(3) Accelerating to a vehicle speed of 3 km/h (2 mph) or more, drive the vehicle in reverse for 1 second or more.

(4) 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.

HINT:

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.

(5) Stop the vehicle.

(e) VSC OFF Switch (Combination Switch Assembly) Check

(1) Press the VSC OFF switch (combination switch assembly).

(2) Check that the VSC OFF indicator light comes on.

(3) Press the VSC OFF switch (combination switch assembly) again.

(4) Check that the VSC OFF indicator light turns off.

(f) Brake Hold Switch (Electric Parking Brake Switch Assembly) Check

HINT:

Perform the check with the system in a normal condition.

(1) Make sure the following conditions are met:

  • The driver door is closed.
  • The driver seat belt is fastened.

(2) Press the brake hold switch (electric parking brake switch assembly).

(3) Check that the brake hold standby indicator light comes on.

(4) Press the brake hold switch (electric parking brake switch assembly) again.

(5) Check that the brake hold standby indicator light turns off.

(g) 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 or slip indicator light remains illuminated.
  • If any DTCs are output or if Dealer Mode (Signal Check) items do not complete even after repeated attempts, repair or replace the malfunctioning part.

(h) End of Dealer Mode (Signal Check)

(1) Turn the ignition switch off.

(2) Disconnect the GTS.

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

Item Name

Range

Judgment Description

Trouble Area

*: w/ Brake Pedal Load Sensing Switch

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

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

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 speed sensor
  • Open or short in wire harness
  • Improperly connected connector, deformation or corrosion of terminals
  • Sensor installation
  • Rear speed sensor rotor 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 speed sensor
  • Open or short in wire harness
  • Improperly connected connector, deformation or corrosion of terminals
  • Sensor installation
  • Rear speed sensor rotor LH

Change in Output Signal of Front Speed Sensor RH

Incomplete / complete

Check the stability of the sensor output waveform

  • Foreign object attached to speed sensor
  • Front speed sensor rotor RH

Change in Output Signal of Front Speed Sensor LH

Incomplete / complete

Check the stability of the sensor output waveform

  • Foreign object attached to speed sensor
  • Front speed sensor rotor LH

Change in Output Signal of Rear Speed Sensor RH

Incomplete / complete

Check the stability of the sensor output waveform

  • Foreign object attached to speed sensor
  • Rear speed sensor rotor RH

Change in Output Signal of Rear Speed Sensor LH

Incomplete / complete

Check the stability of the sensor output waveform

  • Foreign object attached to speed sensor
  • Rear speed sensor rotor LH

Judgment of Failure State*

Incomplete / complete

Check that the brake pedal load sensing switch is normal

  • Open or short in brake pedal load sensing switch system wire harness
  • Brake pedal load sensing switch stuck ON/OFF

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