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DRB Test Functions: Notes

NOTE: DO NOT  touch DRB keypad during DRB power-up sequence, or an error message will result. Ensure correct DRB cartridge is being used.
  1. DRB must be in the LH CLIMATE CONTROL menu in order to perform diagnostic tests. At the LH CLIMATE CONTROL menu, fault codes and DRB test functions can be accessed.
  2. To reach LH CLIMATE CONTROL menu, turn ignition off. Attach DRB to Data Link Connector (DLC), located under instrument cluster, next to center console. See Figure. Turn ignition switch to RU N position.
  3. All DRB character positions will illuminate and copyright information will appear on screen for a few seconds. If DRB screen is blank or any error messages appear, see DRB PROBLEMS & ERROR MESSAGES .
  4. After a few seconds, the DRB menu will appear. At DRB 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 DRB program. After a few seconds, the LH CLIMATE CONTROL menu will appear. The screen will display a menu of the DRB 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 DRB cartridge can be performed. The following DRB modes can be accessed: CLIMATE TESTS, CLIMATE FAULTS, CLIMATE STATE, CLIMATE ACTUATORS and CLIMATE ADJUSTMENT.
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