Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Diagnostic Procedure

CHECK OVERALL FUNCTION-I
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select "BRAKE SW1" in "DATA MONITOR" mode with CONSULT-II.
3. Check "BRAKE SW1" indication under the following conditions.
  
  Fig 1: Displaying Data Monitor Mode With Consult-II
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  M/T models
  
  Fig 2: BRAKE SW1 Indication Table (M/T Models)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  A/T models
  
  Fig 3: BRAKE SW1 Indication Table (A/T Models)
  Courtesy of NISSAN MOTOR CO., U.S.A.
WITHOUT CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 108 and ground under the following conditions.
  
  Fig 4: Checking Voltage Between ECM Terminal 108 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  M/T models
  
  Fig 5: Voltage Condition Table (M/T Models)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  A/T models
  
  Fig 6: Voltage Condition Table (A/T Models)
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 2.
2. NG (M/T models): GO TO 3.
3. NG (A/T models): GO TO 4.
CHECK OVERALL FUNCTION-II
WITH CONSULT-II

Check "BRAKE SW2" indication in "DATA MONITOR" mode.

Fig 7: Displaying Data Monitor Mode With Consult-II
Courtesy of NISSAN MOTOR CO., U.S.A.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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