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OK NG REPLACE BLOWER MOTOR 5. CHECK AIR CONDITIONING AMPLIFIER (BLW VOLTAGE) (a) Remove the air conditioning amplifier with its connectors still connected
. (b) Turn the ignition switch ON. (c) Turn the blower switch LO. (d) Using an oscilloscope, check the waveform. Standard: TESTER CONNECTION TOOL SETTING SWITCH CONDITION SPECIFIED CONDITION J19-23 (BLW) - J19-14 (GND) 1 V/DIV., 500 µsec./DIV. Ignition switch ON Blower switch LO Pulse generation HINT: Waveform varies with the blower level. NG REPLACE AIR CONDITIONING AMPLIFIER OK PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air... |