Grand Cherokee 2WD L6-242 4.0L VIN S MFI (1993)
VIC System Schematic
The VIC module will perform certain self-tests without the use of special tools. To start the test mode, press the SELECT and SET switches
simultaneously while turning the key to ON. The program will stay in diagnostics mode until all the tests pass or the ignition is turned OFF.
When the diagnostic routine begins the module will perform the following:
MICROCOMPUTER RAM/ROM/TIMER TEST - Failure in any of these tests causes the message MODULE FAILURE to be displayed until the
ignition turns OFF.
