GSIC - Global Service Information Center

# ANTI-LOCK BRAKE SYSTEM > DATA LIST / ACTIVE TEST

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READ DATA LIST

HINT:

  Using the intelligent tester's Data List allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to save time.

1. Connect the intelligent tester to the DLC3.

2. Turn the ignition switch ON.

3. Read the Data List according to the display on the tester.

   Skid control ECU:
   Item | Measurement Item / Range (Display) | Normal Condition | Diagnostic Note
   Parking Brake SW | Parking brake switch / ON or OFF | ON: Parking brake applied OFF: Parking brake not applied | -
   Stop Light SW | Stop light switch / ON or OFF | ON: Brake pedal depressed OFF: Brake pedal not depressed | -
   ABS Motor Relay | ABS motor relay / ON or OFF | ON: Motor relay ON OFF: Motor relay OFF | -
   Solenoid Relay | Solenoid relay / ON or OFF | ON: Solenoid relay ON OFF: Solenoid relay OFF | -
   Test Mode | Test mode / NORMAL or TEST | NORMAL: Normal mode TEST: Test mode | -
   Solenoid (SRRR) | ABS solenoid (SRRR (SRR)) / ON or OFF | ON: Operates OFF: Does not operate | -
   Solenoid (SRRH) | ABS solenoid (SRRH (SRH)) / ON or OFF | ON: FOperates OF: Does not operate | -
   Solenoid (SFLR) | ABS solenoid (SFLR) / ON or OFF | ON: Operates OFF: Does not operate | -
   Solenoid (SFLH) | ABS solenoid (SFLH) / ON or OFF | ON: Operates OFF: Does not operate | -
   Solenoid (SFRR) | ABS solenoid (SFRR) / ON or OFF | ON: Operates OFF: Does not operate | -
   Solenoid (SFRH) | ABS solenoid (SFRH) / ON or OFF | ON: Operates OFF: Does not operate | -
   FR Wheel Speed | Wheel speed sensor (FR) reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) | Actual wheel speed | Speed similar to that of speedometer
   FL Wheel Speed | Wheel speed sensor (FL) reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) | Actual wheel speed | Speed similar to that of speedometer
   RR Wheel Speed | Wheel speed sensor (RR) reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) | Actual wheel speed | Speed similar to that of speedometer
   RL Wheel Speed | Wheel speed sensor (RL) reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) | Actual wheel speed | Speed similar to that of speedometer
   ECU IG Power Voltage | ECU power supply voltage / TOO LOW / NORMAL / TOO HIGH | TOO HIGH: more than 14.0 V NORMAL: 10 to 14.0 V TOO LOW: Below 10 V | -
   Deceleration Sensor 1* | Deceleration sensor 1 reading / min.: -1.869 G, max.: 1.869 G | Approximately 0 +- 0.13 G when vehicle is not moving | Reading changes when vehicle is shaken
   Deceleration Sensor 2* | Deceleration sensor 2 reading / min.: -1.869 G, max.: 1.869 G | Approximately 0 +- 0.13 G when vehicle is not moving | Reading changes when vehicle is shaken
   FR Wheel ABS Control | ABS operation (FR) / Before or Operate | Before: No ABS operation (FR) Operate: During ABS operation (FR) | -
   FL Wheel ABS Control | ABS operation (FL) / Before or Operate | Before: No ABS operation (FL) Operate: During ABS operation (FL) | -
   RR Wheel ABS Control | ABS operation (RR) / Before or Operate | Before: No ABS operation (RR) Operate: During ABS operation (RR) | -
   RL Wheel ABS Control | ABS operation (RL) / Before or Operate | Before: No ABS operation (RL) Operate: During ABS operation (RL) | -

   HINT:
     *: 4WD

PERFORM ACTIVE TEST

HINT:

  Performing the intelligent tester's Active Test allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the Active Test early in troubleshooting is one way to save time. The Data List can be displayed during the Active Test.

1. Connect the intelligent tester to the DLC3.

2. Turn the ignition switch ON.

3. Perform the Active Test according to the display on the tester.

   Skid control ECU
   Item | Vehicle Condition / Test Details | Diagnostic Note
   ABS Motor Relay | Turns ABS motor relay ON / OFF | Operation sound of motor can be heard
   Solenoid Relay | Turns ABS solenoid relay ON / OFF | Operation of solenoid (clicking sound) can be heard
   ABS Warning Light | Turns warning light ON / OFF | Observe combination meter
   ABS Solenoid (SRRR) | Turns ABS solenoid (SRRR) ON / OFF | Operation of solenoid (clicking sound) can be heard
   ABS Solenoid (SRRH) | Turns ABS solenoid (SRRH) ON / OFF | Operation of solenoid (clicking sound) can be heard
   ABS Solenoid (SFLR) | Turns ABS solenoid (SFLR) ON / OFF | Operation of solenoid (clicking sound) can be heard
   ABS Solenoid (SFLH) | Turns ABS solenoid (SFLH) ON / OFF | Operation of solenoid (clicking sound) can be heard
   ABS Solenoid (SFRR) | Turns ABS solenoid (SFRR) ON / OFF | Operation of solenoid (clicking sound) can be heard
   ABS Solenoid (SFRH) | Turns ABS solenoid (SFRH) ON / OFF | Operation of solenoid (clicking sound) can be heard