Automatic A/C-Heater System: Self-Diagnostics: Notes

The Electronic Climate Control (ECC) module can detect faults in the system and store Diagnostic Trouble Codes (DTCs). If a fault is present, system informs driver by flashing Orange A/C and recirculation LEDs for 20 seconds.

A fault warning is given when a fault is discovered or present each time ignition is turned on or engine started. DTCs will remain stored until cleared.

There are 5 different test modes/settings which can be selected for reading DTCs and other diagnostic functions. Select DIAGNOS TEST to read and erase DTCs and self-adjust damper motors. Select MONITOR TEST to continuously read values and status of control module input and output signals. Select PROGRAM to program ECC control module. Select ADJUST MOTORS to activate self-adjustment of damper motors. Select READ CM: ID to display control module part number.