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Home >> Jeep >> 2018 >> Compass Limited, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster (Service Information) >> Diagnosis And Testing >> Diagnosis And Testing - Instrument Cluster >> Self Test

Self Test

The self-diagnostic test will put the IC into its test mode. In this mode the IC can perform an actuator test that will confirm that the circuitry, the gauges and the indicators are capable of operating as designed. During the test the IC circuitry will position each of the gauge needles at various calibration points, illuminate each of the segments in the Thin Film Transistor (TFT) display unit and turn all of the indicators ON and OFF again.

Successful completion of the self-diagnostic test will confirm that the IC is operational. However, there may still be a problem with the Controller Area Network (CAN) data bus or another electronic control module that provides electronic message inputs to the IC, or the inputs to one of these electronic control modules. Use a diagnostic scan tool to diagnose these components. Refer to the appropriate diagnostic information.

  1. Begin the test with the ignition switch in the OFF position.
  2. Depress the Electronic Vehicle Information Center (EVIC) Down / Scroll  switch button on the left steering wheel spoke.
  3. While still holding the Down / Scroll  switch button depressed, turn the ignition switch to the ON position, but do not start the engine.
  4. Release the Down / Scroll  switch button.
  5. The IC will simultaneously begin to illuminate all of the operational segments in the TFT display unit and perform a bulb check of each operational LED unit indicator. The TFT display segments and LED unit indicators remain illuminated as each gauge needle is swept to several calibration points and back. If a TFT display segment or an LED unit indicator fails to illuminate, or if a gauge needle fails to sweep through the calibration points and back during this test, the IC must be replaced.
  6. The self-diagnostic test is now complete. The IC will automatically exit the self-diagnostic test mode and return to normal operation at the completion of the test. The self-diagnostic test will be aborted if the ignition switch is turned to the OFF position, or if an electronic vehicle speed  message indicating that the vehicle is moving is received over the CAN data bus during the test.
  7. Repeat the test, if necessary.
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