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HA -182 HEATING, VENTILATION AND AIR CONDITIONING 1 2 3 1 2 3 v 1. AQS signal input 3. AQS power SCMHA6560L Operating condition Voltage Note Right after IGN "ON" 2.5V ± 0.3V preheating(35 ± 2sec) Normal 4.3V ± 0.3V Intake door : Fresh Gas detected 0.9V ± 0.3V Intake door : Recirculation Specifications : Voltage value of AQS sensor as a function of position of operating condition. 4) Is the measured voltage within specifications? YES Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. NO Substitute with a AQS sensor and check for proper operation. 2. Check A/C Control Unit 1) Engine : "ON" 2) Disconnect AQS sensor. 3) Measure voltage between terminal "2" of A/C Control Unit and chassis ground. Specification :Approx. 5V 2. AQS sensor signal input 1 2 3 4 6 9 10 12 13 14 15 16 17 18 19 20 21 22 23 24 * * * * 25 26 v SCMHA6562L 4) Is the measured voltage within specifications? |