Grand Cherokee 4WD V8-4.7L VIN N (2000)
The self-diagnostic test is used to determine that the internal circuitry and compass are operating properly, and all PCT bus messages are being
received for initial operation. The button backlighting is also verified by flashing the bulbs for proper operation.
Initiate the self-diagnostic test as follows:
1. With the ignition switch in the OFF position, simultaneously press and hold the C/T button and the RESET button.
2. Turn the ignition switch to the ON position.
3. Continue to hold both buttons until the software versions are displayed.
4. The display will show the result of the self-diagnostics test. If the display reads:
a. PASS SELF TEST - press the RESET button to return to the compass/temperature display. The EVIC is working properly.
b. FAILED SELF TEST - an internal failure has occurred. Replace EVIC.
c. FAILED J1850 COMMUNICATION - refer to the communication.
