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.
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HOMESERVICE MANUALSINFINITI2013G37 CONVERTIBLE V6-3.7L (VQ37VHR)REPAIR AND DIAGNOSISPOWER AND GROUND DISTRIBUTIONRELAYS AND MODULES - POWER AND GROUND DISTRIBUTIONPOWER DISTRIBUTION MODULEDESCRIPTION AND OPERATIONPOWER CONTROL SYSTEMSYSTEM DESCRIPTION
2013 Infiniti G37 Convertible V6-3.7L (VQ37VHR)
System Description
2013 Infiniti G37 Convertible V6-3.7L (VQ37VHR)SECTION System Description
POWER CONTROL SYSTEM
System Description
COOLING FAN CONTROL
IPDM E/R outputs pulse duty signal (PWM signal) to the cooling fan control module according to the status of the cooling fan speed request signal received from ECM via CAN communication. Refer to "System Diagram" System Diagram.
ALTERNATOR CONTROL
IPDM E/R outputs power generation command signal (PWM signal) to the alternator according to the status of the power generation command value signal received from ECM via CAN communication. Refer to "System Diagram" System Diagram.
RENDER: 1.0x
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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.