TCS Off Switch Is Inoperative

WARNING: This page is about a different car, the 2003 Infiniti I35. However, it is still accessible from the selected car via links, so may be relevant.

Inspection Start
Inspect TCS OFF switch.

Fig 1: Identifying TCS OFF Switch
Courtesy of NISSAN MOTOR CO., U.S.A.

Go to next step.
Check TCS Off Switch
1. Remove TCS OFF switch and disconnect TCS OFF switch connector M45.
2. Check continuity between terminal 2 (SB) and 3 (B) for TCS OFF switch connector M45.
  
  Fig 2: Checking TCS Off Switch Continuity
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK: Go to next step.

NG: Replace TCS OFF switch.
Check TCS Off Switch Power Supply Circuit
- Disconnect connector from ABS actuator and electric unit (control unit) connector E162.
- Check continuity between ABS actuator and electric unit (control unit) harness connector E162 terminal 31 (SB) and TCS OFF switch connector M45 terminal 2 (SB).
  
  Fig 3: Checking TCS OFF Switch Continuity
  Courtesy of NISSAN MOTOR CO., U.S.A.
  1. Does continuity exist ?
Yes: Go to next step.

No: Check the following :
- Harness connectors E162, M45
- Harness for open or short between TCS OFF switch terminal (body side) and ABS actuator and electric unit (control unit)
  If NG, repair harness or connectors.
Check TCS Off Switch Power Supply
Check continuity between TCS OFF switch connector M45 terminal 2 (SB) and ground.

Fig 4: Checking TCS OFF Switch Continuity
Courtesy of NISSAN MOTOR CO., U.S.A.
1. Does continuity exist ?
Yes: Repair harness and connectors.

No: Go to next step.
Check TCS Off Switch Ground Circuit
Check continuity between TCS OFF switch connector M45 terminal 3 (B) and ground.

Fig 5: Checking TCS OFF Switch Continuity
Courtesy of NISSAN MOTOR CO., U.S.A.
1. Does continuity exist ?
Yes: Connect TCS OFF switch connector M45 and check switch operation.

No: Repair harness and connectors.