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Diagnostic Procedure

  1. CHECK OVERALL FUNCTION-I 

    WITH CONSULT-II 

    1. Turn ignition switch ON.
    2. Select "BRAKE SW1" in "DATA MONITOR" mode with CONSULT-II.
    3. Check "BRAKE SW1" indication under the following conditions.
      Fig 1: Identifying CONSULT-II Display Screen Data Monitor
      G02361154Courtesy of NISSAN MOTOR CO., U.S.A.
    BRAKE SW1 CONDITION

    CONDITION INDICATION
    Brake pedal: Slightly depressed OFF
    Brake pedal: Fully released ON

    Without CONSULT-II 

    1. Turn ignition switch ON.
    2. Check voltage between ECM terminal 108 and ground under the following conditions.
    VOLTAGE BETWEEN TERMINALS CHART

    CONDITION VOLTAGE
    Brake pedal: Slightly depressed Approximately 0V
    Brake pedal: Fully released Battery voltage

    OK or NG

    1. OK: GO TO 2.
    2. NG: GO TO  3 .
    Fig 2: Checking Voltage Between ECM Terminal 108 And Ground
    G02361155Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK OVERALL FUNCTION-II 

    WITH CONSULT-II 

    Check "BRAKE SW2" indication in "DATA MONITOR" mode.

    Fig 3: Identifying CONSULT-II Display Screen Data Monitor
    G02361156Courtesy of NISSAN MOTOR CO., U.S.A.
    BRAKE SW2 CONDITION

    CONDITION INDICATION
    Brake pedal: Fully depressed OFF
    Brake pedal: Slightly released ON

    Without CONSULT-II 

    Check voltage between ECM terminal 101 and ground under the following conditions.

    VOLTAGE BETWEEN TERMINALS CHART

    CONDITION VOLTAGE
    Brake pedal: Fully released Approximately 0V
    Brake pedal: Slightly depressed Battery voltage
    Fig 4: Checking Voltage Between ECM Terminal 101 And Ground
    G02361157Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK: INSPECTION END 
    2. NG: GO TO  12 .
  3. CHECK DTC WITH ICC UNIT 

    Refer to "TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS ".

    OK or NG

    1. OK: GO TO 4.
    2. NG: Repair or replace.
  4. CHECK ICC BRAKE SWITCH CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect ICC brake hold relay.
    3. Turn ignition switch ON.
      Fig 5: Disconnecting ICC Brake Hold Relay
      G02361158Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check voltage between ICC brake hold relay terminal 3 and ground with CONSULT-II or tester.
      1. Voltage: Battery voltage 

    OK or NG

    1. OK: GO TO  9 .
    2. NG: GO TO 5.
    Fig 6: Checking Voltage Between ICC Brake Hold Relay Terminal 3 And Ground
    G02361159Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect ICC brake switch harness connector.
    3. Turn ignition switch ON.
      Fig 7: Disconnecting ICC Brake Switch Harness Connector
      G02361160Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Check voltage between ICC brake switch terminal 1 and ground with CONSULT-II or tester.
      1. Voltage: Battery voltage 

    OK or NG

    1. OK: GO TO  7 .
    2. NG: GO TO 6.
    Fig 8: Checking Voltage Between ICC Brake Switch Terminal 1 And Ground
    G02361161Courtesy of NISSAN MOTOR CO., U.S.A.
  6. DETECT MALFUNCTIONING PART 

    Check the following.

    • Fuse block (J/B) connector E201
    • 10A fuse
    • Harness for open or short between ICC brake switch and fuse
      1. : Repair open circuit or short to ground or short to power in harness or connectors.
  7. CHECK ICC BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I 
    1. Turn ignition switch OFF.
    2. Check harness continuity between ICC brake hold relay terminal 3 and ICC brake switch terminal 2. Refer to WIRING DIAGRAM  .
      1. Continuity should exist. 
    3. Also check harness for short to ground and short to power.

    OK or NG

    1. OK: GO TO 8.
    2. NG: Repair open circuit or short to ground or short to power in harness or connectors.
  8. CHECK ICC BRAKE SWITCH 

    Refer to "COMPONENT INSPECTION  ".

    OK or NG

    1. OK: GO TO  17 .
    2. NG: Replace ICC brake switch.
  9. CHECK ICC BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check harness continuity between ICC brake hold relay terminal 4 and ECM terminal 108. Refer to WIRING DIAGRAM  .
      1. Continuity should exist. 
    4. Also check harness for short to ground and short to power.

    OK or NG

    1. OK: GO TO  11 .
    2. NG: GO TO 10.
  10. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors E211, M41
    • Harness for open or short between ICC brake hold relay and ECM
      1. : Repair open circuit or short to ground or short to power in harness or connectors.
  11. CHECK ICC BRAKE HOLD RELAY 

    Refer to "COMPONENT INSPECTION  ".

    1. OK: GO TO  17 .
    2. NG: Replace ICC brake fold relay.
  12. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect stop lamp switch harness connector.
      Fig 9: Disconnecting Stop Lamp Switch Harness Connector
      G02361162Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Check voltage between stop lamp switch terminal 1 and ground with CONSULT-II or tester.
      1. Voltage: Battery voltage 

    OK or NG

    1. OK: GO TO  14 .
    2. NG: GO TO 13.
    Fig 10: Checking Voltage Between Stop Lamp Switch Terminal 1 And Ground
    G02361163Courtesy of NISSAN MOTOR CO., U.S.A.
  13. DETECT MALFUNCTIONING PART 

    Check the following.

    • Fuse block (J/B) connector E201
    • 10A fuse
    • Harness for open or short between stop lamp switch and fuse
      1. : Repair open circuit or short to ground or short to power in harness or connectors.
  14. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
    1. Disconnect ECM harness connector.
    2. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2. Refer to WIRING DIAGRAM  .
      1. Continuity should exist. 
    3. Also check harness for short to ground and short to power.

    OK or NG

    1. OK: GO TO  16 .
    2. NG: GO TO 15.
  15. DETECT MALFUNCTIONING PART 

    Check the following.

    • Harness connectors E211, M41
    • Harness for open or short between ECM and stop lamp switch
      1. : Repair open circuit or short to ground or short to power in harness or connectors.
  16. CHECK STOP LAMP SWITCH 

    Refer to "COMPONENT INSPECTION  "

    OK or NG

    1. OK: GO TO 17.
    2. NG: Replace stop lamp switch.
  17. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT  ".

    1. : INSPECTION END 
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