Inspection Procedure

CHECK SELF-DIAGNOSTIC RESULTS

Check the self-diagnostic results.

Self-diagnostic results

YAW RATE SENSOR

SIDE G-SEN CIRCUIT

G-SENSOR (AWD models)

CAUTION: When on a turntable, such as at a parking structure entrance, or when on a moving object with engine running, VDC OFF indicator lamp might turn on and self-diagnosis using CONSULT-III the yaw rate sensor system might be displayed, but in this case there is no malfunction in yaw rate sensor circuit. As soon as vehicle leaves turntable or moving object, restart engine to return the system to normal.

Is the above displayed in the self-diagnosis display items?

YES >> GO TO 2.

NO >> INSPECTION END

CHECK CONNECTOR
1. Disconnect G sensor connector and ABS actuator and electric unit (control unit) connector and check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
2. Reconnect connectors and perform a ABS actuator and electric unit (control unit) self-diagnosis again.
  OK or NG
  
  OK >> Connector terminal contact is loose, damaged, open or shorted.
  
  NG >> GO TO 3.

CHECK G SENSOR HARNESS

Turn ignition switch OFF and disconnect G sensor connector M79 (2WD models) or M71 (AWD models) and ABS actuator and electric unit (control unit) connector E56.
Check continuity between ABS actuator and electric unit (control unit) harness connector and G sensor harness connector.

ABS actuator and electric unit (control unit)	G sensor	Continuity
6	3
24	5	Yes
25	1
29	2

OK or NG

OK >> GO TO 4.

NG >> If the open or short in harness, repair or replace harness.

Fig 1: Checking Continuity Between ABS Actuator And Electric Unit (Control Unit) Harness Connector And G Sensor Harness Connector

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

CHECK G SENSOR

Connect G sensor connector and ABS actuator and electric unit (control unit) connector.

Use CONSULT-III "DATA MONITOR" to check if G sensor are normal.

Vehicle status	Yaw rate sensor (Data monitor standard)	Side G sensor (Data monitor standard)	Decel G sensor (AWD models) (Data monitor standard)
When stopped	- 4 to + 4 deg/s	- 1.1 to + 1.1 m/s2	- 0.11 to + 0.11G
Right turn	Negative value	Negative value	-
Left turn	Positive value	Positive value	-
Speed up	-	-	Negative value
Speed down	-	-	Positive value

OK or NG

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

NG >> Replace malfunctioning G sensor, and then perform self-diagnosis for ABS actuator and electric unit (control unit) again.