HDC Switch Inspection

WARNING: This page is about a different car, the 2005 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.

HDC SWITCH INSPECTION
Check if the HDC indicator lamp in the combination meter turns on or flashes when pressing HDC switch.

OK or NG
- OK: Inspection End.
- NG: GO TO 2.
CHECK HDC SWITCH CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector E125.
2. Check continuity between ABS actuator and electric unit (control unit) connector E125 terminal 9 and HDC switch connector M155 terminal 2.
  Continuity should exist.
OK or NG
- OK: GO TO 3.
- NG: Repair or replace harness or connector.
  
  Fig 1: Checking HDC Switch Circuit
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK HDC SWITCH GROUND
Check continuity between HDC switch connector M155 terminal 1 and body ground.

Continuity should exist.

OK or NG
- OK: Replace HDC switch.
- NG: Repair or replace harness or connector.
  
  Fig 2: Checking HDC Switch Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.