LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2002 >> Grand Cherokee Overland >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules >> Self-Diagnostic System >> EVIC Self-Check Diagnostics
April 5, 2026: LEMON Manuals is launched! Read the announcement.

EVIC Self-Check Diagnostics

The EVIC is capable of performing a diagnostic self-check on its internal functions. EVIC diagnostics may be performed using a DRBIII(R) or by using the following procedure:

  1. With the ignition switch in the OFF position, depress and hold the RESET and the C/T buttons.
  2. Turn the ignition switch to the ON position.
  3. Continue to hold both buttons until the software versions are displayed, then release the buttons.
  4. All of the VFD segments will illuminate for 2-4 seconds. Check for segments that do not illuminate or illuminate all the time.
  5. When the self-check is complete the EVIC will display one of the following messages: PASS SELF TEST, FAILED SELF TEST or NOT RECEIVING J1850 MESSAGE.
  6. To exit the self-check mode, depress the RESET button or cycle the ignition switch and the EVIC will return to normal operation.

If a communication fault is displayed, diagnose using appropriate procedure. See COMMUNICATION  under DIAGNOSTIC TESTS. If a FAILED is displayed, the EVIC must be replaced.