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 M45FACTORY OEM SERVICE PROCEDURE
Brake Control System
- Precautions
- Preparation
- On-Vehicle Service
- System Description
- Can Communication
- Trouble Diagnosis
- How To Proceed With Diagnosis
- Component Installation Location
- Schematic
- Wiring Diagram
- Control Unit Input/Output Signal Standard
- Consult-II Functions
- Correct And Quick Diagnosis
- Basic Inspection
- Inspection 1 Wheel Sensor System
- Inspection 2 Engine System
- Inspection 3 VDC/TCS/Abs Control Unit 1
- Inspection 4 Pressure Sensor System
- Inspection 5 Steering Angle Sensor System
- Inspection 6 Yaw Rate/Side G Sensor System
- Inspection 7 Solenoid And VDC Change-Over Valve System
- Inspection 8 Abs Motor And Motor Relay System
- Inspection 9 Solenoid Valve Relay System
- Inspection 10 Stop Lamp Switch System
- Inspection 11 VDC/TCS/Abs Control Unit Power And Ground Systems
- Inspection 12 VDC/TCS/Abs Control Unit 2
- Inspection 13 Brake Fluid Level Sensor System
- Inspection 14 Can Communication System
- Inspection 15 When "Shift Position Error" Appears In Self-Diagnosis Results Display
- Inspecting Components
- Continuity, Resistance
- Actuator Operation Inspection
- Symptom 1 Excessive Abs Function Operation Frequency
- Symptom 2 Unexpected Pedal Reaction
- Symptom 3 The Braking Distance Is Long
- Symptom 4 The Abs Function Does Not Operate
- Symptom 5 Pedal Vibration Or Abs Operation Sound Occurs
- Symptom 6 Vehicle Jerks During VDC/TCS/Abs Control
- Wheel Sensors
- VDC/TCS/Abs Control Unit
- Sensor Rotor
- VDC/TCS/Abs Actuator
- G Sensor
- Steering Angle Sensor
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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