Introduction to the Intelligent Power Distribution Module Engine Room (IPDM E/R)
This document serves as a detailed technical guide for the Nissan Intelligent Power Distribution Module Engine Room (IPDM E/R). It outlines the diagnostic procedures, system functionalities, and repair workflows necessary for maintaining and troubleshooting this critical automotive component. The IPDM E/R plays a central role in managing various electrical systems within the vehicle, ensuring efficient power distribution and control.
Key System Overviews:
- Relay Control System: Manages the operation of various relays based on input signals from sensors and control units via CAN communication.
- Power Control System: Oversees cooling fan control and generator control, responding to signals from the Engine Control Module (ECM).
- Signal Buffer System: Facilitates communication between components like the oil pressure switch, Body Control Module (BCM), and ECM.
- Power Consumption Control System: Implements power-saving modes by managing communication and control based on vehicle status and signals from the BCM.
Diagnostic Approach:
The manual details a systematic approach to diagnosing issues, starting with gathering symptom information, checking Diagnostic Trouble Codes (DTCs), confirming symptoms, and performing basic inspections. It guides technicians through component diagnosis, repair or replacement of faulty parts, and final checks to ensure the vehicle's electrical systems are functioning correctly.
Important Resources:
For detailed system diagrams, component locations, specific DTC logic, and wiring diagrams for Coupe and Sedan models, refer to the respective sections within this manual. Safety precautions, especially concerning the Supplemental Restraint System (SRS) and battery disconnection, are also emphasized.
