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AIR CONDITIONING (A/C) DIAGNOSTICS - PRESSURE ZONE C Air Conditioning (A/C) Diagnostics - Pressure Zone C Step Action Yes No DEFINITION: The low and the high side pressures are both higher than normal. Restricted Condenser Air Flow Cooling Fan Malfunction Expansion Device Malfunction 1 Were you sent here from the A/C System Go to Step 2 Go to Air 2 1. Start the engine. 2. Turn ON the A/C. 3. Inspect for proper cooling fan operation. Refer to Cooling System Are the cooling fans ON and operating Go to Step 3 Go to Step 5 3 Visually inspect for the following Damaged condenser cooling fins Missing or misaligned air baffles Restricted air flow Go to Step 4 Go to Step 6 4 Repair the air flow restriction. Go to Step 9 - 5 Repair the fault to the cooling fan Go to Step 9 - CAUTION:
2007 Hummer H3 2007 HVAC Heating, Ventilation and Air Conditioning - H3
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