Diagnostic Instructions
Circuit/System Description
The instrument cluster displays the engine coolant temperature, fuel level, vehicle speed and the engine speed based on the information from the engine control module (ECM). The ECM sends information via a High Speed CAN-Bus signal to the body control module (BCM). The BCM then sends the information via a Low Speed CAN-Bus signal to the instrument cluster to display the engine coolant temperature, fuel level, the engine speed, the vehicle speed and the distance travelled, either in kilometers or miles, based on the vehicle requirements. The instrument cluster will display dashes when its VIN does not match the VIN received from the BCM.
Diagnostic Aids
If the VIN mismatch is corrected the odometer will once again be displayed in the instrument cluster. If the vehicle is driven for a calibrated distance with a VIN mismatch, it will cause the instrument cluster odometer to enter into an error mode and lock itself. When this occurs the dashes will remain on the display even after correcting the VIN mismatch. The vehicle odometer status data display on the scan tool can be used to identify a locked odometer. The only way to unlock the instrument cluster (clear the dashes from the display) is to perform an SPS programming event. Failure to follow the diagnostic and programming procedures may result in either an improper odometer value or a module replacement.
Reference Information
Schematic Reference
Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Trax)
Connector End View Reference
WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE
Description and Operation
Instrument Cluster Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Diagnose DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
Replace the P16 Instrument Cluster.
Replace the P16 Instrument Cluster.
Refer to Circuit/System Testing.
Replace the P16 Instrument Cluster.
Circuit/System Testing
NOTE: If there are multiple modules not original to the vehicle and are not new correctly configured service parts, SPS may not be able to proper read or recover the vehicle odometer value. Follow government rules and documentation (including vehicle identification) regarding inaccurate/unknown odometer values.
Perform circuit/system verification first.
Instrument Cluster is Showing "----" (Dashes)
Correcting VIN mismatch - odometer is still Inactive.
Refer to correcting VIN mismatch - odometer Active.
Reprogram the BCM, then proceed to Step 3.
Reprogram the instrument cluster. Then proceed with step 4.
Replace the P16 Instrument Cluster.
Instrument Cluster is Showing "----" (Dashes)
Correcting VIN mismatch - odometer is Active.
Refer to Correcting VIN mismatch - odometer Inactive.
Reprogram the Instrument Cluster. Then proceed with step 3.
Replace the P16 Instrument Cluster.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for instrument cluster, BCM or ECM replacement, programming, and setup