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Scan Tool Test Functions: Notes

NOTE: DO NOT touch scan tool keypad during scan tool power-up sequence, or an error message will result. Ensure correct scan tool cartridge is being used.
  1. Scan tool must be in the LH CLIMATE CONTROL menu in order to perform diagnostic tests. At the LH CLIMATE CONTROL menu, fault codes and scan tool test functions can be accessed.
  2. To reach LH CLIMATE CONTROL menu, turn ignition off. Attach scan tool to 16-pin Data Link Connector (DLC), located under instrument cluster, next to center console. See Figure. Turn ignition switch to RUN position.
  3. All scan tool character positions will illuminate and copyright information will appear on screen for a few seconds. If scan tool screen is blank or any error messages appear, see SCAN TOOL PROBLEMS & ERROR MESSAGES .
  4. After a few seconds, scan tool menu will appear. At scan tool menu, press "4" (SELECT SYSTEM) key to enter diagnostic test program. Press the down arrow 3 times to change menu display.
  5. At SELECT SYSTEM menu, press "9" (LH CLIMATE CONT) key to enter climate (A/C-heater) control part of the scan tool program. After a few seconds, the LH CLIMATE CONTROL menu will appear. The screen will display a menu of scan tool test categories for the A/C-heater system.
  6. At LH CLIMATE CONTROL menu of A/C-heater system diagnostic program, specific test functions programmed into scan tool cartridge can be performed. The following scan tool modes can be accessed: CLIMATE TESTS, CLIMATE FAULTS, CLIMATE STATE, CLIMATE ACTUATORS and CLIMATE ADJUSTMENT.
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