Chart C-2

You have been directed here due to the climate control panel not responding to at least one button.

Notes on trouble trees
1. For the Computer Control Driver Information Center (CCDIC) to respond to key board buttons, it must "know" that the key is in run. This step checks for ISO-13.
2. This step checks for good data to the CCDIC on circuit 800B. If the ALDL pin and CCDIC pin show the same voltage trend, then the circuit appears good.