Displaying & Reading Trouble Codes

Fig. 3 Climate control panel (CCP) display:

To enter diagnostic mode, turn ignition "ON," then depress "OFF" and Warmer buttons on the Climate Control Panel (CCP), Fig. 3. Hold buttons until all display panel segments illuminate, indicating beginning of diagnostic readout. The two display panels must be illuminated to ensure all segments are operating. Do not attempt diagnosis unless all segments appear, as a misdiagnosis could result. If any segments are inoperative, the display panel must be replaced.