Instrument Cluster Gauges Inoperative
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.
Diagnostic Aids
Verify the fuel level sensor is able to move through the entire
range and does not stuck at any pipe or wire.
Reference Information
Schematic Reference
Instrument Cluster Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Instrument Cluster Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
| ⇒ |
If any DTC is set, diagnose this first. |
| 2. |
Ignition ON, perform the
Instrument Cluster Gauge Sweep test with the scan tool, verify that
all gauges sweep from their low to high position. |
| ⇒ |
If any gauge does not sweep, replace the P16
Instrument Cluster. |
| 3. |
Drive the vehicle, verify the
gauge values matches the values on the scan tool. |
| ⇒ |
If the values do not match, replace the P16
Instrument Cluster . |
| 4. |
Verify the fuel level sensor
arm is able to move through the entire range and does not stuck at
any pipe or wire. |
| 5. |
If all gauges do sweep and
display the correct value, and the odometer display counts up,
replace the K20 Engine Control Module. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
Control Module References for instrument cluster or ECM
replacement, setup and programming
|
