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.
2005 Infiniti Q45FACTORY OEM SERVICE PROCEDURE
Brake Control System
- Precautions
- Preparation
- On-Vehicle Service
- System Description
- Can Communication
- Trouble Diagnosis
- How to Perform Trouble Diagnosis For Quick and Accurate Repair
- Component Installation Location
- Schematic
- Wiring Diagram - VDC -
- Control Unit Input/Output Signal Standard
- CONSULT-II Functions
- For Fast and Accurate Diagnosis
- Basic Inspection
- Inspection 1 Wheel Sensor System
- Inspection 2 Engine System
- Inspection 3: VDC/TCS/ABS Control Unit Circuit
- Inspection 4 Pressure Sensor System
- Inspection 5 Steering Angle Sensor System
- Inspection 6 Yaw Rate/Side G Sensor System
- Inspection 7 Solenoid and VDC Switching Valve System
- Inspection 8 Actuator Motor and Motor Relay System
- Inspection 9 Actuator Relay System
- Inspection 10 Stop Lamp Switch System
- Inspection 11 VDC/TCS/ABS Control Unit Power And Ground System
- Inspection 12 Park/Neutral Position Switch System
- Inspection 13 Brake Fluid Level Switch System
- Inspection 14: CAN Communication Lines System
- Inspecting Components
- Symptom 1 ABS Works Frequently.
- 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
- Symptom 7: ABS Warning Lamp Indication Is Not Normal
- Symptom 8: Slip Indicator Lamp Indication Is Not Normal
- Symptom 9: VDC OFF Indicator Lamp Indication Is Not Normal
- Wheel Sensors
- VDC/TCS/Abs Control Unit
- Sensor Rotor
- VDC/TCS/Abs Actuator
- G Sensor
- Steering Angle Sensor
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.