Anti-Lock Brake System Test Mode Procedure

Release the parking brake.

NOTICE:

Before releasing the parking brake, move the shift lever to P for safety (for automatic transaxle model) or set the chocks to hold the vehicle for safety (for manual transaxle model).

HINT:

When the parking brake is applied or the level of the brake fluid is low, the brake warning light comes on.

When the ignition switch is turned to ON, check that the ABS warning and brake warning lights come on for approximately 3 seconds.

HINT:

1. If the skid control ECU stores any DTCs, the ABS warning and brake warning lights will come on.
   
2. If the indicator remains on or does not come on, proceed to troubleshooting for the light circuits listed below.
   

Procedure to enter Test Mode.

1. Turn the ignition switch off.
   

2. Check that the steering wheel is centered.
   

3. Check that the shift lever is in P (for automatic transaxle model) or the parking brake is applied (for manual transaxle model).
   

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 to Test Mode using the Techstream. Enter the following menus: Chassis / ABS/VSC/TRAC / Utility / Signal Check.
   





8. Check that the ABS warning light comes on for several seconds and then blinks in Test Mode.
   

   HINT:

   If the ABS warning light does not blink, inspect the TS and CG terminal circuit and ABS warning light circuit.

   Trouble Area	See Procedure
   TS and CG terminal circuit	COROLLA_ZRE142 RM000000XIV0DNX.html
   ABS warning light circuit (Remains on)	COROLLA_ZRE142 RM000000XIH0ESX.html
   ABS warning light circuit (Does not come on)	COROLLA_ZRE142 RM000000XIQ0EPX.html

9. Check the ABS sensors.
   

   HINT:

   Check that the ABS warning light is blinking in Test Mode and perform the check.

Drive the vehicle straight-ahead.
Accelerate the vehicle to a speed of 45 km/h (28 mph) or more for several seconds and check that the ABS warning light goes off.

HINT:

1. The sensor check may not be completed if wheel spin occurs.
   
2. The ABS warning light blinks when the sensor check has been completed and the brake pedal is depressed.
   
3. The ABS warning light comes on immediately after a malfunction has been detected during the speed sensor check.
   

Stop the vehicle.

NOTICE:

1. The speed sensor check may not be completed if the speed sensor check is started while turning the steering wheel or spinning the wheels.
   
2. 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).
   
3. If the sensor check has not been completed, the ABS warning light will blink while driving and the ABS will not operate.
   

HINT:

When the sensor check has been completed, the ABS warning light goes off while driving and blinks in the Test Mode pattern while the vehicle is stationary.

If the sensor check is completed, the ABS warning light blinks (Test Mode) when the vehicle stops and the ABS warning light is off while the vehicle is driving.

NOTICE:

If the sensor check has not been completed, the ABS warning light will blink while driving and the ABS will not operate.

Read the DTC(s) by following the Techstream screen.

NOTICE:

1. If only DTCs other than the Test Mode sensor check DTCs are displayed, repair the malfunction and clear the DTCs.
   
2. If the Test Mode sensor check DTCs and other DTCs are displayed or if only the Test Mode sensor check DTCs are displayed, repair the malfunction, clear the DTCs, and perform the Test Mode inspection again.
   

HINT:

See the list of DTC (See procedure "A").

Turn the ignition switch off and disconnect the Techstream.

Procedure to enter Test Mode.

1. Turn the ignition switch off.
   

2. Check that the steering wheel is centered.
   

3. Check that the shift lever is in P (for automatic transaxle model) or the parking brake is applied (for manual transaxle model).
   





4. Using SST, connect terminals TS and CG of the DLC3.
   

   SST

   09843-18040
   

5. Turn the ignition switch to ON.
   





6. Check that the ABS warning light comes on for several seconds and then blinks in Test Mode.
   

   HINT:

   If the ABS warning light does not blink, inspect the TS and CG terminal circuit, and ABS warning light circuit.

   Trouble Area	See Procedure
   TS and CG terminal circuit	COROLLA_ZRE142 RM000000XIV0DNX.html
   ABS warning light circuit (Remains on)	COROLLA_ZRE142 RM000000XIH0ESX.html
   ABS warning light circuit (Does not come on)	COROLLA_ZRE142 RM000000XIQ0EPX.html

7. Check the ABS sensors.
   

   HINT:

   Check that the ABS warning light is blinking in Test Mode and perform the check.

Drive the vehicle straight-ahead.
Accelerate the vehicle to a speed of 45 km/h (28 mph) or more for several seconds and check that the ABS warning light goes off.

HINT:

1. The sensor check may not be completed if wheel spin occurs.
   
2. The ABS warning light blinks when the sensor check has been completed and the brake pedal is depressed.
   
3. The ABS warning light comes on immediately after a malfunction has been detected during the speed sensor check.
   

Stop the vehicle.

NOTICE:

1. The speed sensor check may not be completed if the speed sensor check is started while turning the steering wheel or spinning the wheels.
   
2. 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).
   
3. If the sensor check has not been completed, the ABS warning light will blink while driving and the ABS will not operate.
   

HINT:

When the sensor check has been completed, the ABS warning light goes off while driving and blinks in the Test Mode pattern while the vehicle is stationary.

If the sensor check is completed, the ABS warning light blinks (Test Mode) when the vehicle stops and the ABS warning light is off while the vehicle is driving.

NOTICE:

If the sensor check has not been completed, the ABS warning light will blink while driving and the ABS will not operate.

Using SST, connect terminals TC and CG of the DLC3.

SST

09843-18040

Count the number of blinks of the ABS warning light.

NOTICE:

1. If only DTCs other than the Test Mode sensor check DTCs are displayed, repair the malfunction and clear the DTCs.
   
2. If the Test Mode sensor check DTCs and other DTCs are displayed or if only the Test Mode sensor check DTCs are displayed, repair the malfunction, clear the DTCs, and perform the Test Mode inspection again.
   

HINT:

1. If more than 1 malfunction is detected at the same time, the lowest numbered code will be displayed first.
   
2. See the list of DTCs (See procedure "A").
   

After performing the check, disconnect SST from terminals TS and CG, and TC and CG of the DLC3, and turn the ignition switch off.

Turn the ignition switch to ON to cancel Test Mode.

HINT:

1. If the ignition switch is not turned to ON after SST is removed from the DLC3, the previous Test Mode will continue.
   
2. If the ignition switch is turned to ON with terminals TS and CG connected, the previous Test Mode will continue.