Principles of Operation
When installing a new instrument cluster, it is necessary to upload the module configuration information to the scan tool. Following installation of the instrument cluster, download the module configuration information and the vehicle identification number (VIN) from the scan tool into the new instrument cluster. For additional module configuration information, refer to MODULE CONFIGURATION . Following installation of the instrument cluster, the instrument cluster and the powertrain control module (PCM) need to be mated. Refer to parameter reset procedure in ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) .
The following items are configurable:
- Odometer unit (English/metric)
- Speedometer calibration
- Backup warning chime (Japan only)
- Overspeed warning (for service use only at [GCC] countries)
- Compass
- Outside air temperature
- Outside air units
- Gallon display
- Metric display type
- Default language
- Default oil life warning threshold
- Autolamp delay timer
- Auto locks
- Reverse mirror
- Tire pressure monitoring system
- 4x4 module
- Easy entry/exit
- Roll stability control (RSC)/interactive vehicle dynamics (IVD)
- Power running boards
- Transmission control module (TCM)
- Back-up/park-aid control
- Auto-unlock
- Key-in-ignition chime
- A/C clutch
- Safety belt timer (Japan only)
The base and high series instrument clusters are configurable, hybrid electronic clusters (HEC) that contain a microprocessor, gauges, indicator lamps, and internal circuitry. The instrument cluster uses hardwired circuitry and the controller area network (CAN) to transmit and receive data from other modules. For additional information regarding the communication networks, refer to MODULE COMMUNICATIONS NETWORK .
It is very important to understand:
- where the input originates.
- all the information necessary in order for a feature to operate.
- which module(s) receive(s) the input or command message.
- whether the module which received the input controls the output of the feature, or whether it outputs a message over the CAN circuits to another module.
- which module controls the output of the feature.
The instrument cluster carries out a display prove-out to verify that the warning/indicator lamps and monitored systems are operating correctly. The safety belt warning indicator illuminates for 60 seconds ± 1 second or until the safety belt is fastened. When the ignition switch is turned to the on position, the charging system warning indicator (base instrument cluster), the low oil pressure warning indicator, and the malfunction indicator lamp (MIL) illuminate until the engine is started and operating normally. Each time the ignition switch is turned from the off to the on positions, the following instrument cluster warning indicators prove out for 3 seconds:
- Engine coolant over temperature warning indicator (base instrument cluster)
- Air bag warning indicator (6 seconds)
- BRAKE warning indicator
- Tire pressure monitoring system (TPMS) warning indicator
- ABS warning indicator
- Check fuel cap (base instrument cluster)
- Powertrain malfunction (wrench) warning indicator (base instrument cluster)
- 4x4 LOW indicator (if equipped)
- 4x4 high indicator (if equipped)
- Stability assist indicator