DTC C1109

INSPECTION PROCEDURE

1. CHECK SELF-DIAGNOSTIC RESULTS (1) 

   Check the self-diagnostic results.

   SELF-DIAGNOSTIC RESULTS CHART
   
   

   Self-diagnostic results
   BATTERY VOLTAGE [ABNORMAL]

   Does "BATTERY VOLTAGE" appear in self-diagnostic results display?

   YES : GO TO 2.

   NO : INSPECTION END

2. CHECK SELF-DIAGNOSTIC RESULTS (2) 
   1. Disconnect ABS actuator and electric unit (control unit) connector. Then reconnect it securely.
   2. Perform self-diagnosis.

   Do any self-diagnosis item appear?

   YES : GO TO 3.

   NO : Poor connection. Repair or replace connector.

3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT (1) 
   1. Disconnect ABS actuator and electric unit (control unit) connector E56.
   2. Turn ignition switch OFF. Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
      ABS ACTUATOR AND ELECTRIC UNIT VOLTAGE CHART
      
      

      ABS actuator and electric unit (control unit)	Ground	Voltage
      32	-	Battery voltage (Approx. 12 V)

   3. Turn ignition switch ON (but do not start engine). Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
      ABS ACTUATOR AND ELECTRIC UNIT VOLTAGE CHART
      
      

      ABS actuator and electric unit (control unit)	Ground	Voltage
      4	-	Battery voltage (Approx. 12 V)

      Fig 1: Checking Voltage Between ABS Actuator And Electric Unit Harness Connector And Ground

      Courtesy of NISSAN MOTOR CO., U.S.A.

   OK or NG 

   OK : GO TO 4.

   NG : GO TO  5.

4. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT 

   Check ABS actuator and electric unit (control unit) ground circuit.

   CONTINUITY REFERENCE CHART
   
   

   ABS actuator and electric unit (control unit)	Ground	Continuity
   16	-	Yes

   OK or NG 

   OK : Perform ABS actuator and electric unit (control unit) self-diagnosis again.

   NG : Repair or replace harness or connectors.

   Fig 2: Checking ABS Actuator And Electric Unit Ground Circuit

   Courtesy of NISSAN MOTOR CO., U.S.A.
5. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT (2) 
   1. Check fuse 10 A (terminal 4) and 30 A (terminal 32).
   2. Turn ignition switch OFF and check continuity between battery positive terminal and ABS actuator and electric unit (control unit) harness connector E56.
      CONTINUITY RESULTS CHART
      
      

      ABS actuator and electric unit (control unit)	Battery positive terminal	Continuity
      4, 32	-	Yes

   OK or NG 

   OK : Check for non-standard conditions in battery (terminal looseness, low voltage, etc.) and alternator.

   NG :

   • Replace fuse 10 A or 30 A.
   • Open or short in harness.
     Fig 3: Checking Continuity Between Battery Positive Terminal And ABS Actuator And Electric Unit Harness Connector E56

     Courtesy of NISSAN MOTOR CO., U.S.A.