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MANUAL A/C DIAGNOSIS TSB Revision HEATER, AIR CONDITIONING AND VENTILATION 55A-11 STEP 2. Check the dual pressure switch operation. the high/low pressure side terminals located on the harness (2) Install a gauge manifold to the high-pressure side service valve of the refrigerant line. (Refer to (3) When the high/low pressure sides of the dual pressure switch are at operation pressure (ON) and there is Q: When the high/low pressure sides of the dual pressure switch are at operation pressure (ON), is there STEP 3. Measure the automatic compressor controller Q: Is the automatic compressor controller terminal voltage correct? go to Step 5. STEP 4. Measure the powertrain control module terminal − Check at the Powertrain Control Module (PCM) Q: Is the voltage correct? YES : Go to Step 5. STEP 5. Retest the system. YES : The procedure complete. (If no malfunctions are not found in all steps, an intermittent malfunction is − How to Cope with Intermittent Malfunction NO : Go to Step 1. ITEM OFF to ON ON to OFF Low-pressure side kPa 223 ± 27 (32.4 ± 3.9) 196 ± 20 (28.4 ± 2.9) High-pressure side kPa 2,550 ± 200 (369.9 ± 29) 3,140 ± 200 (455.5 ± 29) ACX00822 ON OFF 196 ± 20 223 ± 27 2,550 ± 200 3,140 ± 200 kPa DUAL PRESSURE AF |