Test Mode Procedure

HINT:

• If the ignition switch is turned from the ON to the ACC or LOCK position during test mode, DTCs related to the signal check function will be erased.
• During test mode, the skid control ECU records all DTCs related to the signal check function. By performing the signal check, the codes are erased if normality is confirmed. The codes left over are the codes where an abnormality was found.

1. Turn the ignition switch to OFF.
2. Check that the steering wheel is in the straight-ahead position.
3. A/T: Check that the shift lever is in the P position and apply the parking brake.

   M/T: Check that the shift lever is in neutral and apply the parking brake.

4. Connect the intelligent tester to the DLC3.
5. Turn the ignition switch to the ON position.
   Fig 1: Connecting Intelligent Tester To DLC3

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Switch the ECU to test mode using the intelligent tester.

   Select the following menu items: DIAGNOSIS / OBD/MOBD / select vehicle / ABS VSC / SIGNAL CHECK.

   Fig 2: Intelligent Tester Display - Diagnostic Menu

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Check that the ABS warning light blinks as shown in the illustration.

   HINT:

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

   Fig 3: Identifying ABS Warning Light Blinking Pattern

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TROUBLE AREA REFERENCE
   
   

   Trouble Areas	See
   ABS warning light circuit	ABS WARNING LIGHT REMAINS ON  ABS WARNING LIGHT DOES NOT COME ON
   TS and CG terminal circuit	TS AND CG TERMINAL CIRCUIT

8. Start the engine.
9. Active the ABS sensor (deceleration sensor, 4WD detection switch, L4 detection switch and speed sensor) in test mode (SIGNAL CHECK) using intelligent tester.

HINT:

• If the ignition switch is turned from the ON to the ACC or LOCK position during test mode, DTCs related to the signal check function will be erased.
• During test mode, the skid control ECU records all DTCs related to the signal check function. By performing the signal check, the codes are erased if normality is confirmed. The codes left over are the codes where an abnormality was found.

1. Turn the ignition switch to OFF.
2. Check that the steering wheel is in the straight-ahead position.
3. A/T: Check that the shift lever is in the P position and apply the parking brake.

   M/T: Check that the shift lever is in neutral and apply the parking brake.

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

   SST 09843-18040 

5. Turn the ignition switch to the ON position.
   Fig 4: Identifying DLC3 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Check that the ABS warning light is blinking as shown in the illustration.

   HINT:

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

   Fig 5: Identifying ABS Warning Light Blinking Pattern

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TROUBLE AREA REFERENCE
   
   

   Trouble Areas	See
   ABS warning light circuit	ABS WARNING LIGHT REMAINS ON  ABS WARNING LIGHT DOES NOT COME ON
   TS and CG terminal circuit	TS AND CG TERMINAL CIRCUIT

7. Start the engine.
8. Activate the ABS sensor (deceleration sensor, 4WD detection switch, L4 detection switch and speed sensor) in test mode (SIGNAL CHECK) using a check wire.

1. Check that the ABS warning light is blinking as shown in the illustration.
2. Keep the vehicle stationary on a level surface for 1 second or more.
   Fig 6: Identifying ABS Warning Light Blinking Pattern

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check that the ABS warning light is blinking as shown in the illustration.
2. Check the transfer indicator switch (4WD position).
   1. Push the 4 wheel drive control switch on to put the vehicle in 4WD mode.
   2. Push the 4 wheel drive control switch off to put the vehicle in 2WD mode.
      Fig 7: Identifying ABS Warning Light Blinking Pattern

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check that the ABS warning light is blinking as shown in the illustration.
2. Check the transfer indicator switch (L4 position).
   1. Turn the 4 wheel drive control switch to the L position to put the vehicle in L4 mode.
   2. Turn the 4 wheel drive control switch to the H position to put the vehicle in H4 mode.

      HINT:

      Move the vehicle either a little forward or a little backward to engage the L4 position.

      Fig 8: Identifying ABS Warning Light Blinking Pattern

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check that the ABS warning light is blinking as shown in the illustration.
2. Check thee speed sensor signal.
   1. Drive the vehicle straight forward at a speed of 56 mph (90 km/h) or more.
   2. Drive the vehicle straight rearward at a speed of 1.9 mph (3 km/h) or more for 1 second or more.
   3. Check that the ABS warning light goes off.

      HINT:

      The sensor check may not be completed if the vehicle has its wheels spun or its steering wheel turned during this check.

      Fig 9: Identifying ABS Warning Light Blinking Pattern

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Stop the vehicle.
   NOTE:

   • Before performing the speed sensor signal check, complete the deceleration sensor, 4WD detection switch and L4 detection switch signal checks.
   • The speed sensor signal check may not be completed if the speed sensor signal check is started while turning the steering wheel or spinning the wheels.
   • After the ABS warning light goes off, if the vehicle speed exceeds 28 mph (45 km/h), a signal check code will be stored again. Decelerate or stop the vehicle before the speed reaches 28 mph (45 km/h).
   • If the signal check has not been completed, the ABS warning light blinks while driving and the ABS system does not operate.

   HINT:

   When the signal check has been completed, the ABS warning light goes off while driving and blinks in test mode while stationary.

1. Read the DTC(s) by following the tester screen.

   HINT:

   • Refer to the intelligent tester operator's manual for further details.
   • See the list of DTC.

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

   SST 09843-18040 

2. Turn the ignition switch to the ON position.
3. Read the number of blinks of the ABS warning light.

   HINT:

   • See the list of DTC.
     Fig 10: Identifying DLC3 Connector Terminals

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   • If every sensor is normal, the normal code is displayed (A cycle of 0.25 seconds ON and 0.25 seconds OFF is repeated).
   • If 2 or more malfunctions are detected at the same time, the lowest numbered DTC is displayed first.
     Fig 11: Identifying ABS Warning Light Blinking Pattern

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
     Fig 12: Identifying ABS Warning Light Blinking Pattern (Indication Of DTCS 72 And 76)

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. After the check, disconnect the SST from terminals TC and CG of the DLC3.
5. Turn the ignition switch to OFF.

HINT:

The DTCs in this table are only output in test mode.