1987 Toyota Truck my AC idle up is always activated

1987 Toyota Truck mileage: 187,000. I am simply amazed with these trucks, mine still runs like a top, however: I live in California and the EPA regulations here are very strict. All of my emissions passed with flying colors but I failed the test because my AC idle up is always activated (according to the diagnostics I performed with the engine "short circuit" check engine light [code 11]. Air works great but the idle goes down instead of up when I start the AC. How can I fix the AC Idle up module or disable the AC to pass the smog test? I can only get to 9 degrees BTDC and I need it to go to 3-5 BTDC at idle. I just had a timing chain installed and it is installed correctly. Where is the AC idle up computer and do I have to replace it? The temperature does get hotter than normal in mountain climbs or long hauls, but I suspect it may be because the timing may be to retarded at high speeds. Please advise.