Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the active booster connector and ABS actuator and electric unit (control unit) connector and inspect the terminals for deformation, disconnection, looseness, or damage.
  Is the inspection result normal?
  
  YES: GO TO 2
  
  NO: Repair connector.

ACTIVE BOOSTER CIRCUIT INSPECTION

Measure the continuity between ABS actuator and electric unit (control unit) connector E125 (A) and active booster connector E49 (B).

ABS actuator and electric unit (control unit)		Active booster		Continuity
Connector	Terminal	Connector	Terminal	Continuity
E125 (A)	17	E49 (B)	3	Yes
	27		1
	28		5
	30		2
	31		4

Fig 1: Measuring Active Booster Circuit Continuity

Courtesy of NISSAN NORTH AMERICA, INC.

Measure the continuity between ABS actuator and electric unit (control unit) connector E125 (A) and body ground.

ABS actuator and electric unit (control unit)		-	Continuity
Connector	Terminal	-	Continuity
E125 (A)	17	Ground	No
	27
	28
	30
	31

Is the inspection result normal?

YES: GO TO 3

NO: Repair or replace harness or connector.

ACTIVE BOOSTER INSPECTION
1. Reconnect the active booster and ABS actuator and electric unit (control unit) connectors.
2. Perform the active booster component inspection. Refer to "COMPONENT INSPECTION ".
  Is the inspection result normal?
  
  YES: Replace the ABS actuator and electric unit (control unit). Refer to "REMOVAL AND INSTALLATION ".
  
  NO: Replace the active booster. Refer to "REMOVAL AND INSTALLATION ".