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Verification Procedure VER-1A, System Verification Test

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY  table. For wiring diagram, see WIRING DIAGRAM  .
  1. Disconnect all previously connected jumper wires. Reconnect all previously disconnected connectors. Reinstall all previously removed relays. Replace any blown fuses. Using DRB-II, erase fault messages. Turn ignition off and on. Using DRB-II, read fault messages for 4 minutes. If any fault messages are displayed, go to TEST 1A  . If no fault messages are displayed, go to next step.
  2. Using DRB-II, select and monitor STOP LAMP SWITCH INPUT. If DRB-II does not display "ON" when brake pedal is depressed, perform VERIFICATION PROCEDURE VER-1B  . If DRB-II displays "ON" when brake pedal is depressed, go to next step.
  3. Using DRB-II, read ACCUMULATOR SENSOR STATE voltage value. Depress brake pedal 40 times. If accumulator voltage is not temporarily more than 4 volts, perform VERIFICATION PROCEDURE VER-1C  . If voltage is temporarily more than 4 volts, go to next step.
  4. Using DRB-II, read BOOST and PRIMARY PRESSURE TRANSDUCER voltage values with brake pedal released. If both boost and primary pressure transducer voltages are more than 4 volts, perform VERIFICATION PROCEDURE VER-1D  . If both boost and primary pressure transducer voltages are less than 4 volts, go to next step.
  5. If both boost and primary pressure transducer voltages are zero volts, perform VERIFICATION PROCEDURE VER-1E  . If both boost and primary pressure transducer voltages are not zero volts, go to next step.
  6. Road test vehicle for at least 5 minutes at various speeds. Perform several ABS stops during road test. After completing road test, use DRB-II to read fault messages. If any fault messages are displayed, go to TEST 1A  . If no fault messages are displayed, ABS is operating properly at this time.
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