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A/C Condenser Fan Motor Relay Low 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 CONTROL SWITCH - TROUBLESHOOTING CHART

Step Action YES NO
1  A/C condenser fan motor control circuit check 
  1. Remove ECM cover.
  2. Measure voltage between "E61-22" 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 low-speed relay referring to A/C COMPRESSOR RELAY AND CONDENSER FAN MOTOR RELAY INSPECTION : Manual Type.

Is check result as specified? 		 "YEL/GRN" wire or "YEL/BLU" wire is open circuit. Faulty A/C condenser fan motor relay.
3  A/C condenser fan motor low speed control signal check 
  1. Start engine.
  2. Turn ON A/C switch and heater blower motor switch.
  3. Measure voltage between "E61-22" and vehicle body ground.

Is voltage 0 - 1 V? 		 Go to Step 4. Go to Step 6.
4  A/C condenser 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 "RED/BLU" wire terminal in A/C condenser fan motor connector and vehicle body ground.

Is voltage 10 - 14 V? 		 Go to Step 6. 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 low-speed relay referring to A/C COMPRESSOR RELAY AND CONDENSER FAN MOTOR RELAY INSPECTION : Manual Type.

Is check result as specified? 		 "RED/BLK" wire or "RED/BLU" wire is open circuit. Faulty A/C condenser fan motor low speed relay.
6  A/C switch signal check 
  1. Turn ON A/C switch and heater blower motor switch
  2. Measure voltage between "E61-17" and vehicle body ground with ignition switch turned ON.

Is voltage 0 - 1 V? 		 Substitute a known-good ECM and recheck. Faulty "GRN/BLK" wire, A/C evaporator temperature is below 2.5 °C, 36.5 °F, 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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