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

Diagnostic Chart:

Wiring Diagram:

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 or 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.