DTC B13AA:71 [CLIMATE CONTROL UNIT (MANUAL AIR CONDITIONER)]

id0702k3200300

System malfunction location	•  Air mix actuator motor lock
Detection condition	•  Air mix actuator motor lock
Fail-safe function	Malfunction determined when ignition switched ON •  Air mix actuator drive signal is stopped right when the malfunction is determined. Malfunction already exists when ignition switched ON •  Twenty seconds after the ignition is switched ON, the air mix actuator drive signal is output normally again. Afterwards, motor output is stopped during malfunction determination.
Possible cause	•  Connector or terminal malfunction •  Air mix actuator malfunction •  A/C unit (air mix link and air mix crank) malfunction •  Open circuit in wiring harness between climate control unit and air mix actuator •  Short to ground in wiring harness between climate control unit and air mix actuator •  Climate control unit malfunction

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT AIR MIX ACTUATOR CONNECTOR •  Switch the ignition off. •  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) •  Disconnect the air mix actuator connector. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].) •  Inspect the connector and terminals (corrosion, damage, pin disconnection). •  Are the connector and terminals normal?	Yes	Go to the next step.
		No	Repair/replace the connector or terminal. After repair procedure, go to the next step.
2	INSPECT AIR MIX ACTUATOR OPERATION •  Disconnect the air mix actuator connector. •  Apply battery positive voltage and connect the ground to the air mix actuator terminals B and C, and then inspect the air mix actuator. •  Does the air mix actuator operate?	Yes	Connect the connector, then go to Step 4.
		No	Go to the next step.
3	INSPECT AIR MIX LINK OPERATION •  Remove the air mix actuator. •  Operate the air mix link manually. •  Does the air mix link operate smoothly?	Yes	Replace the air mix actuator. (See AIR MIX ACTUATOR REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].) Go to the next step.
		No	Replace the air mix link and the air mix crank. Go to the next step.
4	INSPECT AIR MIX ACTUATOR CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND •  Disconnect the climate control unit connector. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].) •  Apply battery positive voltage and connect the ground to the climate control unit terminal W and X, and then inspect the air mix actuator. •  Does the air mix actuator operate?	Yes	Go to the next step.
		No	Repair or replace the wiring harness which has an open circuit or short to ground. Go to the next step.
5	VERIFY CLIMATE CONTROL UNIT CONNECTOR CONDITION •  Inspect the connector and terminals (corrosion, damage, pin disconnection). •  Are the connector and terminals normal?	Yes	Go to the next step.
		No	Repair/replace the malfunctioning vehicle wiring harness, connector, or terminal. After repair procedure, go to the next step.
6	VERIFY THAT SAME DTC IS NOT OUTPUT AGAIN •  Reconnect the disconnected connectors. •  Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) •  Clear the past malfunction from memory. •  Verify DTCs. •  Is DTC B13AA:71 output?	Yes	Repeat the inspection from Step 1. •  If the malfunction does not recur, go to the next step. •  If the malfunction recurs, replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].) Go to the next step.
		No	Go to the next step.
7	VERIFY THAT NO OTHER DTCs ARE PRESENT •  Verify other DTCs displayed. •  Are any other DTCs output?	Yes	Perform the corresponding DTC inspection.
		No	DTC troubleshooting completed.