Toyota Corolla Cross: Test Mode Procedure
TEST MODE PROCEDURE
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.
SENSOR CHECK USING DEALER MODE (SIGNAL CHECK)
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.
- 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:
- The driver door is closed.
- 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 park (P) is selected.
(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.
*: Electric Parking Brake System
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, 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) Speed Sensor Check
(1) Turn the ignition switch to ON (READY).
(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.
(5) Stop the vehicle.
(d) 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.
(e) End of Dealer Mode (Signal Check)
(1) Turn the ignition switch off.
(2) Disconnect the GTS.
(f) 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
|
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 input 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 input 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 input 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 input waveform
|
- Foreign object attached to speed sensor
- Rear speed sensor rotor LH
|
READ NEXT:
UTILITY
DESCRIPTION
(a) If any of the parts listed in the following table are replaced
or adjusted, it is necessary to perform the specified operation.
NOTICE:
Learning cannot be performed again
PROBLEM SYMPTOMS TABLE
If DTCs are not output but the malfunction persists, use the
following table to determine which circuits to inspect for each problem symptom.
HINT:
Refer to each inspection
TERMINALS OF ECU
CHECK BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY
(a) Disconnect the A189 electric brake booster (brake booster with
master cylinder assembly) connector and measure the voltage or
SEE MORE:
DESCRIPTION The ECM constantly generates a 5 V power source voltage from the auxiliary battery voltage supplied to the +B, +B2 (BATT) terminals to operate the microprocessor. The ECM also provides this power to the sensors through the VC output circuit.
When the VC circuit has a short circuit, th
CAUTION / NOTICE / HINT
NOTICE:
Do not perform "Smart Code Reset" (all key ID erasure) until all malfunctions and symptoms have been confirmed and resolved. If all key ID erasure is performed without confirming or resolving malfunctions, key registration will be unable to be performed, resulti