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A/C Condenser Fan Motor Relay High-Speed Control System Check: Troubleshooting

WARNING: Keep hands, tools, and clothing away from A/C condenser fan to help prevent personal injury. This fan is electric and can come on whether or not the engine is running. The fan can start automatically in response to the ECT sensor with the ignition switch in the "ON" position.
A/C CONDENSER FAN MOTOR - TROUBLESHOOTING CHART

Step Action YES NO
1  A/C condenser fan motor control circuit check 
  1. Remove ECM cover.
  2. Measure voltage between "E61-18" and vehicle body ground with ignition switch turned ON.

Is voltage 10 - 14 V? 		 Go to Step 3. Go to Step 2.
2  A/C condenser fan motor control circuit check 
  1. Turn OFF ignition switch.
  2. Check for fuse blow at "HTR 15 A" fuse.
  3. If OK, check A/C condenser fan motor high-speed relay No.1 and No.2 referring to A/C COMPRESSOR RELAY AND CONDENSER FAN MOTOR RELAY INSPECTION : Manual Type.

Is check result as specified? 		 "YEL/GRN" wire or "BLU/ORN" wire is open circuit. Faulty A/C condenser fan motor relay.
3  A/C condenser fan motor high-speed control signal check 
  1. Start engine.
  2. Turn ON A/C switch and heater blower motor switch.
  3. Connect "E61-18" terminal of ECM connector and vehicle body ground by using service wire (1).
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Is A/C condenser fan motor started at high speed? 		 Go to Step 7. Go to Step 4.
4  A/C condenser fan control circuit check 
  1. Turn OFF ignition switch.
  2. Disconnect A/C condenser fan motor connector.
  3. Start engine.
  4. Turn ON A/C switch and heater blower motor switch.
  5. Measure voltage between "BLU/BLK" wire terminal in A/C condenser fan motor connector and vehicle body ground.

Is voltage 10 - 14 V? 		 Go to Step 7. Go to Step 5.
5  A/C condenser control circuit check 
  1. Turn OFF ignition switch.
  2. Check for fuse blow at main fuse (25 A).
  3. If OK, check A/C condenser fan motor high-speed relay No.1 and No.2 referring to A/C COMPRESSOR RELAY AND CONDENSER FAN MOTOR RELAY INSPECTION : Manual Type.

Is check result as specified? 		 "RED/BLK" wire, "BLU/BLK" wire are open circuit. Faulty A/C condenser fan motor high-speed relay No.1 or No.2.
6  A/C condenser control circuit check 
  1. Start engine.
  2. Turn ON A/C switch and heater blower motor switch.
  3. Measure resistance between "BLU/WHT" wire terminal in A/C condenser fan motor connector and vehicle body ground.

Is resistance below 5 Ω? 		 "BLU/WHT" wire or "BLK" wire are open circuit. Faulty A/C condenser fan motor high-speed relay No.1 or No.2.
7  A/C refrigerant pressure switch signal check 
  1. Turn ON A/C switch and heater blower motor switch while A/C condenser fan motor connector disconnected.
  2. Start engine.
  3. Measure voltage between "E61-20" and vehicle body ground with engine running.

Is voltage 10 - 14 V? 		 Substitute a known-good ECM and recheck. Faulty "ORN" wire or faulty refrigerant pressure switch or faulty A/C system referring to HVAC CONTROL MODULE AND ITS CIRCUITS INSPECTION : Manual Type or HVAC CONTROL MODULE AND ITS CIRCUITS INSPECTION : Automatic Type.
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