Automatic Climate Control II (ACC II)

When taking readings and conducting fault diagnosis, both the connectors (one 39-pin and one 12-pin) should be unplugged. All readings should be taken on the connectors and not on the ACC control module.

Stored diagnostic trouble codes in the self-test program can be read using the ISAT scan tool. The number of faults stored is shown on the display for 6 seconds when the ignition is switched on.