Automatic Climate Control System Functional Test
Use the following Functional Test Chart to determine proper operation of Automatic Climate Control System:
BUICK ACC FUNCTIONAL TEST CHART
| CONTROL SETTINGS | SYSTEM RESPONSE | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| STEP | MODE CONTROL | TEMPERATURE DIAL | BLOWER SPEED | COMPRESSOR | AIR VALVE | HEATER OUTLETS | A/C OUTLETS | DEFROSTER OUTLETS | AIR TEMPERATURE |
| 1 | OFF | 85 | LOW | OFF | O/S AIR | AIR FLOW | NO AIR FLOW | NO AIR FLOW | HOT |
| 2 | ECONOMY | 85 | AUTO | OFF | O/S AIR | AIR FLOW | NO AIR FLOW | MINIMUM AIR FLOW | |
| 3 | LO | 85 | LOW | ON | O/S AIR | AIR FLOW | NO AIR FLOW | ||
| 4 | AUTO | 85 TO 65 | AUTO | ON | O/S AIR I/S AIR |
AIR FLOW NO AIR FLOW |
NO AIR FLOW AIR FLOW |
NO AIR FLOW | HOT TO COLD |
| 5 | HI | 65 TO 85 | HIGH | ON | I/S AIR O/S AIR |
NO AIR FLOW AIR FLOW |
AIR FLOW NO AIR FLOW |
NO AIR FLOW | COLD TO HOT |
| 6 | BI-LEVEL | 85 | AUTO | ON | O/S AIR | AIR FLOW | AIR FLOW | MINIMUM AIR FLOW | HOT |
| 7 | DEF | 85 | HIGH | ON | O/S AIR | MINIMUM AIR FLOW | NO AIR FLOW | MAXIMUM AIR FLOW | |