Chart 1C-8 Inoperative H-A/C Control

CIRCUIT DESCRIPTION
The H-A/C control receives battery voltage at all times through CKT 40. This input is used to retain the volatile memory of the H-A/C control. CKT 241 is an ignition input used to wake up" the H-A/C control, CKT 351 supplies ground to the H-A/C control.

DIAGNOSTIC AIDS
^ Check I/P Fuse numbers 20 and 33 for open circuits. If open circuit is found, check for short to ground.