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 Infiniti I35FACTORY OEM SERVICE PROCEDURE

Diagnostic Procedure

CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch ON
2. Select MAIN SW, RESUME/ACC SW, SET SW and CANCEL SW in DATA MONITOR mode with CONSULT-II.
  
  Fig 1: Displaying CONSULT-II DATA MONITOR Screen
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check each item indication under the following conditions.
  
  Fig 2: Listing ASCD Steering Switch Conditions
  Courtesy of NISSAN MOTOR CO., U.S.A.
Without CONSULT-II
1. Turn ignition switch ON
2. Check voltage between ECM terminal 50 and ground with pressing each button.
  
  Fig 3: Checking Voltage Between ECM And Ground
  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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