Introduction
This document details the Combination Meter system for Nissan vehicles. It covers the integrated functions of the speedometer, tachometer, fuel gauge, water temperature gauge, odometer, trip meter, and shift-up indicator. The system also includes various warning lamps, an A/T indicator, warning chimes, and communication systems like CAN and Compass. Troubleshooting procedures and component information are provided for diagnosis and maintenance.
Key Components and Functions
- Unified Meter Control Unit: Integrates various gauges and indicators.
- Speedometer: Displays vehicle speed, receiving data via CAN communication.
- Tachometer: Shows engine speed (RPM), also via CAN communication.
- Fuel Gauge: Indicates fuel level based on signals from the fuel level sensor unit.
- Water Temperature Gauge: Displays engine coolant temperature.
- Odo/Trip Meter: Records total mileage and trip distances, with a resettable trip function.
- Shift-Up Indicator: Guides optimal gear shifting timing based on engine speed.
- Warning Lamps: Alert the driver to various system conditions (e.g., oil pressure, SRS).
- A/T Indicator: Displays automatic transmission status, including manual mode.
- Warning Chime System: Provides audible alerts for conditions like ignition key reminder, lights, and seat belt status.
- CAN Communication: Enables data exchange between various vehicle control units.
- Compass: Displays directional information.
- Clock: Shows the current time.
Troubleshooting and Maintenance
The document outlines procedures for diagnosing issues related to power supply, ground circuits, and specific signals for each component. It includes symptom charts, inspection steps for sensors and switches, and guidance on self-diagnosis modes for the combination meter. Safety precautions, especially concerning the SRS system and battery service, are also emphasized.
