Test Mode Procedure

1. Release the parking brake.
   NOTE: Before releasing the parking brake, move the shift lever to the P position for safety (for automatic transaxle model) or set 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.

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

   HINT:

   • If the skid control ECU stores any DTCs, the ABS warning light will come on.
   • If the indicator remains on or does not come on, proceed to troubleshooting for the light circuits listed below.
     Fig 1: Identifying ABS Warning Light And Brake Warning Light

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
     DIAGNOSTIC PROCEDURE CHART
     
     

     Trouble Area	See procedure
     ABS warning light circuit (Remains on)	ABS WARNING LIGHT REMAINS ON
     ABS warning light circuit (Does not come on)	ABS WARNING LIGHT DOES NOT COME ON
     Brake warning light circuit (Remains on)	BRAKE WARNING LIGHT REMAINS ON
     Brake warning light circuit (Does not come on)	BRAKE WARNING LIGHT DOES NOT COME ON

HINT:

• If the ignition switch is turned from ON to ACC or OFF during Test Mode (signal check), DTCs recorded during the signal check function will be erased.
• During Test Mode (signal check), the skid control ECU records all DTCs of the signal check function. By performing the Test Mode (signal check), the codes are erased if a normal condition is confirmed. The remaining codes are the codes where an abnormality was found.

1. Procedure to enter Test Mode.
   1. Turn the ignition switch to OFF.
   2. Check that the steering wheel is in the straight-ahead position.
   3. Check that the shift lever is in the P position (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. Enter the following menu items: Chassis / ABS/ VSC/TRAC / Signal Check.
   8. Check that the ABS warning light comes on for several seconds and then blink in Test Mode.

      HINT:

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

      Fig 2: Identifying ABS Warning Light Blinking Pattern

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      DIAGNOSTIC PROCEDURE CHART
      
      

      Trouble Area	See procedure
      TS and CG terminal circuit	TS AND CG TERMINAL CIRCUIT
      ABS warning light circuit (Remains on)	ABS WARNING LIGHT REMAINS ON
      ABS warning light circuit (Does not come on)	ABS WARNING LIGHT DOES NOT COME ON

1. Keep the vehicle stationary on a level surface for 1 second or more.

1. Check the speed sensor signal.
   1. 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.

      • The sensor check may not be completed if wheel spin occurs.
      • The ABS warning light blinks when the sensor check has been completed and the brake pedal is depressed.
      • The ABS warning light comes on immediately after a malfunction has been detected during the speed sensor check.
2. Stop the vehicle.
   Fig 3: Identifying ABS Warning Light Blinking Pattern

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002