Nissan Sentra manuals

Nissan Sentra Service Manual: C1140 Actuator relay system

DTC Logic

DTC DETECTION LOGIC

DTC

Display Item

Malfunction detected condition

Possible causes

C1140

ACTUATOR RLY

When a malfunction is detected in actuator relay.

  • Harness or connector

  • ABS actuator and electric unit (control unit)

  • Fusible link

  • Battery power supply system

DTC CONFIRMATION PROCEDURE

1.CHECK SELF DIAGNOSTIC RESULT

With CONSULT


  1. Turn ignition switch ON.
  2. Perform self diagnostic result.

Is DTC C1140 detected? YES >> Proceed to diagnosis procedure. Refer to BRC-77, "Diagnosis Procedure".

NO >> Inspection End.

Diagnosis Procedure

Regarding Wiring Diagram information, refer to BRC-44, "Wiring Diagram".

1.CONNECTOR INSPECTION

  1. Turn ignition switch OFF.

  2. Disconnect ABS actuator and electric unit (control unit) connector.

  3. Check connector and terminals for deformation, disconnection, looseness or damage.

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair or replace as necessary.

2.Check ABS Actuator and electric unit (control unit) battery power supply

Check voltage between ABS actuator and electric unit (control unit) connector E33 terminal 25 and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 3.

NO >> Repair or replace malfunctioning components.

3.Check abs actuator and electric unit (control unit) ground circuit

Check continuity between ABS actuator and electric unit (control unit) connector E33 terminals 13, 38 and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-110, "Removal and Installation".

NO >> Repair or replace malfunctioning components.

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