For 1990-2009 cars

## Function Test Pontiac

Control Settings | System Response
--- | ---
Mode Lever | Temp Control | Fan Switch | A/C Button | Recirc Button | Heater Outlet | A/C Outlets | Defrost Outlets | See Remark
VENT | COLD | OFF | OFF | Not Used | No Air Flow | No Air Flow | No Air Flow |
VENT | COLD | 1 | OFF | Not Used | No Air Flow | Air Flow | No Air Flow | A
VENT | COLD | 2 to 5 | OFF | Not Used | No Air Flow | Air Flow | No Air Flow | B, C, F, I
BI-LEVEL | COLD | 2 | OFF | Not Used | Air Flow | Air Flow | No Air Flow | A
HEATER | HOT | 5 | OFF | Not Used | Air Flow | No Air Flow | Minimum Air Flow | A, D, G
BLEND | HOT | 5 | OFF | Not Used | Air Flow | No Air Flow | Air Flow | A, G, H
DEF | HOT | 5 | OFF | Not Used | Minimum Air Flow | No Air Flow | Air Flow | A, G
VENT | COLD | 5 | ON | Not Used | No Air Flow | Air Flow | No Air Flow | E
REMARK A - Engagement of the detent must be felt in each mode
REMARK B - Progressive blower speed increase must occur between 1, 2, 3, 4, and 5
REMARK C - Listen for an increase or a reduction of air noise
REMARK D - Inspect for air flow at side window defogger outlets
REMARK E - At room temperature air from the center A/C outlets should feel cold with the blower speed on 5
REMARK F - Temperature from the vent outlets should be the same as the temperature out side the vehicle
REMARK G - Temperature from the defroster outlets should be above the temperature outside the vehicle
REMARK H - Slight engine flare should be noted as the A/C compressor clutch engages and disengages
REMARK I - Barrels and vanes must hold position with the fan on high

The vehicle A/C must be on for a minimum of 90 seconds prior to performing the tests.

Perform each step of the functional tests with the following conditions in place:

• | The windows are up.

• | The doors are closed.

## Function Test Oldsmobile

Control Settings | System Response
--- | ---
Mode Lever | Temp Control | Fan Switch | A/C Button | Recirc Button | Heater Outlet | A/C Outlets | Defrost Outlets | See Remark
VENT | COLD | OFF | OFF | OFF | No Air Flow | No Air Flow | No Air Flow |
VENT | COLD | 1 | OFF | OFF | No Air Flow | Air Flow | No Air Flow | A
VENT | COLD | 2 to 5 | OFF | OFF | No Air Flow | Air Flow | No Air Flow | B, C, F, I
BI-LEVEL | COLD | 2 | OFF | OFF | Air Flow | Air Flow | No Air Flow | A
HEATER | HOT | 5 | OFF | OFF | Air Flow | No Air Flow | Minimum Air Flow | A, D, G
BLEND | HOT | 5 | OFF | OFF | Air Flow | No Air Flow | Air Flow | A, G, H
DEF | HOT | 5 | OFF | OFF | Minimum Air Flow | No Air Flow | Air Flow | A, G
VENT | COLD | 5 | ON | OFF | No Air Flow | Air Flow | No Air Flow | E
VENT | COLD | 5 | OFF | ON | No Air Flow | Air Flow | No Air Flow | H, J
REMARK A - Engagement of the detent must be felt in each mode
REMARK B - Progressive blower speed increase must occur between 1, 2, 3, 4, and 5
REMARK C - Listen for an increase or a reduction of air noise
REMARK D - Inspect for air flow at side window defogger outlets
REMARK E - At room temperature air from the center A/C outlets should feel cold with the blower speed on 5
REMARK F - Temperature from the vent outlets should be the same as the temperature out side the vehicle
REMARK G - Temperature from the defroster outlets should be above the temperature outside the vehicle
REMARK H - Slight engine flare should be noted as the A/C compressor clutch engages and disengages
REMARK I - Barrels and vanes must hold position with the fan on high
REMARK J - Noticeable increase in air flow noise

The vehicle A/C must be on for a minimum of 90 seconds prior to performing the tests.

Perform each step of the functional tests with the following conditions in place:

• | The windows are up.

• | The doors are closed.