IHKA On Board Diagnosis: Notes

The on board diagnostics function is a special feature of the IHKA that provides three test modes:

• Mode 1 - Read fault memory
• Mode 2 - Calibration run
• Mode 3 - Manual check of functions

To access the on board diagnosis function the OFF button and the blower PLUS switch must be pressed simultaneously for approximately two seconds with the ignition in position 2. The central display panel will show a single "streamer bar" to represent mode 1 - Read fault memory. To access mode 1 the AUTO button must be pressed.

To select mode 2 or 3 it is necessary to press the OFF button, the second or third streamer bar illuminating will indicate the relevant mode to the Technician depending on how many times the OFF button is pressed. To access the mode the AUTO button must be pressed. To exit the on board diagnosis mode the ignition must be switched to the off position.