BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: TEST MODE PROCEDURE; 2018 MY Camry [03/2017

Last Modified: 11-20-2023	6.11:8.1.0	Doc ID: RM1000000012SYB
Model Year Start: 2018	Model: Camry	Prod Date Range: [03/2017 - 06/2017]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: TEST MODE PROCEDURE; 2018 MY Camry [03/2017 - 06/2017]

TEST MODE PROCEDURE

WARNING LIGHT AND INDICATOR LIGHT INITIAL CHECK

(a) When the ignition switch is turned to ON, check that the ABS warning light, brake warning light, VSC OFF indicator light, and slip indicator light come on for approximately 3 seconds.

HINT:

When the brake fluid level is low or the vacuum inside the brake booster decreases, the brake warning light comes on.
If the skid control ECU (brake actuator assembly) stores a DTC, the ABS warning and slip indicator lights will come on.
If any of the indicators remains on or does not come on, proceed to troubleshooting for the light circuits listed below.

Trouble Area	See Procedure
ABS warning light circuit (Remains on)
ABS warning light circuit (Does not come on)
Brake warning light circuit (Remains on)
Brake warning light circuit (Does not come on)
VSC OFF indicator light circuit (Remains on)
VSC OFF indicator light circuit (Does not come on)
Slip indicator light circuit (Remains on)
Slip indicator light circuit (Does not come on)

SENSOR CHECK USING TEST MODE (SIGNAL CHECK) (When Using TECHSTREAM)

NOTICE:

Perform Test Mode (Signal Check) with the vehicle stopped.

HINT:

DTCs are stored if any malfunctions are detected during the check of each sensor.
When entering Test Mode (Signal Check), the skid control ECU (brake actuator assembly) communicates with the millimeter wave radar sensor assembly to judge whether the vehicle is equipped with the pre-collision system. Therefore, do not exit Test Mode (Signal Check) within 5 seconds of entering Test Mode (Signal Check) (w/ Pre-collision System).

(a) Procedure to enter Test 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 Techstream to the DLC3.

(5) Turn the ignition switch to ON.

(6) Turn the Techstream on.

(7) Switch the skid control ECU (brake actuator assembly) to Test Mode (Signal Check) using the Techstream. Enter the following menus: Chassis / ABS/VSC/TRAC / Utility / Signal Check.

Chassis > ABS/VSC/TRAC > Utility

Tester Display
Signal Check

HINT:

Do not exit Test Mode (Signal Check) within 5 seconds of entering Test Mode (Signal Check). If Test Mode (Signal Check) is exited within 5 seconds of entering Test Mode (Signal Check), DTC U0235 may be stored. If DTC U0235 is output after exiting Test Mode (Signal Check), enter Test Mode (Signal Check) again, wait at least 5 seconds, then recheck for DTCs (w/ Pre-collision System).

(8) Check that the ABS warning and slip indicator lights come on for several seconds and then blink in the Test Mode (Signal Check) pattern.

HINT:

If the ABS warning and slip indicator lights do not blink, inspect the ABS warning and slip indicator light circuits.

(9) Check the ABS sensors.

HINT:

Check that the ABS warning light is blinking in the Test Mode (Signal Check) pattern before performing the following ABS sensor checks.

(b) Speed Sensor Check

(1) Drive the vehicle straight-ahead.

Accelerate the vehicle to a speed of 45 km/h (28 mph) or more for several seconds.

HINT:

The speed sensor check may not complete if wheelspin occurs.
The speed sensor check may not complete if the speed sensor check is started while turning the steering wheel.

NOTICE:

After the ABS warning light goes off, if the vehicle speed exceeds 80 km/h (50 mph), a sensor check code will be stored again.

Decelerate or stop the vehicle before the speed reaches 80 km/h (50 mph).

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

HINT:

The ABS warning light goes off when the sensor check has completed.
The ABS warning light comes on immediately after a malfunction has been detected during the speed sensor check.

(3) Stop the vehicle.

HINT:

When the sensor check has completed, the ABS warning light goes off while the vehicle is being driven, and blinks in the Test Mode (Signal Check) pattern while the vehicle is stopped.

NOTICE:

If the sensor check has not completed, the ABS warning light will blink while the vehicle is being driven and the ABS will not operate.

(1) Press the VSC OFF switch.

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

(3) Press the VSC OFF switch again.

(d) End of Sensor Check

(1) If the sensor checks have completed, the ABS warning light blinks in the Test Mode (Signal Check) pattern when the vehicle is stopped and the ABS warning light goes off while the vehicle is being driven.

NOTICE:

If the sensor checks have not completed, the ABS warning light will blink while the vehicle is being driven and the ABS will not operate.

(e) End of Test Mode (Signal Check)

(1) Turn the ignition switch off and disconnect the Techstream.

(f) Test 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 speed 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 speed 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 output waveform	Front speed sensor RH 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 output waveform	Front speed sensor LH 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 output waveform	Rear speed sensor RH (rear axle hub and bearing assembly RH) 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 output waveform	Rear speed sensor LH (rear axle hub and bearing assembly LH) Rear speed sensor rotor LH (rear axle hub and bearing assembly LH)