DTC U300E:13 [FULL-AUTO AIR CONDITIONER]

id0702c1731800

With Dual Type Climate Control Unit, With i-stop

System malfunction location	•  Climate control unit power supply circuit open (IG1 or IG2)
Detection condition	•  Malfunction in wiring harness between climate control unit and front body control module (FBCM) •  Malfunction in wiring harness between climate control unit and ignition relay (IG_STAB)
Fail-safe function	Not applicable
Possible cause	•  Ignition relay (IG_STAB) malfunction •  Climate control unit connector malfunction •  Front body control module (FBCM) connector malfunction •  Open circuit in wiring harness between battery positive terminal and climate control unit terminal •  Open circuit in wiring harness between front body control module (FBCM) terminal and climate control unit terminal •  Climate control unit malfunction

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT IGNITION RELAY (IG_STAB) FOR MALFUNCTION •  Switch the ignition off. •  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) •  Remove the ignition relay (IG_STAB). (See RELAY LOCATION.) •  Inspect the ignition relay (IG_STAB). (See RELAY INSPECTION.) •  Is the ignition relay (IG_STAB) normal?	Yes	Go to the next step.
		No	Replace the ignition relay (IG_STAB), then go to Step 5. (See RELAY LOCATION.)
2	VERIFY CLIMATE CONTROL UNIT CONNECTOR CONDITION •  Disconnect the climate control unit connector. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO 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.
3	VERIFY FRONT BODY CONTROL MODULE (FBCM) CONNECTOR CONDITION •  Disconnect the front body control module (FBCM) connector. (See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.) •  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.
4	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT •  Inspect for continuity between climate control unit terminal 1D and ignition relay (IG_STAB). •  Is there continuity?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify whether or not there is a common connector between climate control unit terminal and ignition relay (IG_STAB). If there is a common connector: •  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Go to the next step.
5	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT •  Inspect for continuity between climate control unit terminal 1F and front body control module (FBCM) terminal 1C. •  Is there continuity?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify whether or not there is a common connector between climate control unit terminal and front body control module (FBCM) terminal. If there is a common connector: •  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Go to the next step.
6	INSPECT CLIMATE CONTROL UNIT •  Reconnect the disconnected connectors. •  Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) •  Clear DTCs using the M-MDS. •  Perform the climate control unit DTC inspection using the M-MDS. (See DTC DISPLAY [FULL-AUTO AIR CONDITIONER].) •  Are DTCs U300E:13 displayed?	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 [FULL-AUTO 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. (See DTC DISPLAY [FULL-AUTO AIR CONDITIONER].) •  Are any other DTCs output?	Yes	Perform the corresponding DTC inspection. (See DTC TABLE [FULL-AUTO AIR CONDITIONER].)
		No	DTC troubleshooting completed.

With Dual Type Climate Control Unit, Without i-stop

System malfunction location	•  Climate control unit power supply circuit open (IG1 or IG2)
Detection condition	•  Malfunction in wiring harness between climate control unit and front body control module (FBCM) •  Malfunction in wiring harness between climate control unit and C/U IG 15 A fuse
Fail-safe function	Not applicable
Possible cause	•  C/U IG1 15 A fuse malfunction •  IG1 relay malfunction •  Climate control unit connector malfunction •  Front body control module (FBCM) connector malfunction •  Open circuit in wiring harness between battery positive terminal and climate control unit terminal •  Open circuit in wiring harness between front body control module (FBCM) terminal and climate control unit terminal •  Climate control unit malfunction

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT FUSE •  Switch the ignition off. •  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) •  Remove the C/U IG1 15 A fuse. •  Is the fuse normal?	Yes	Install the C/U IG1 15 A fuse, then go to the next step.
		No	Replace the C/U IG1 15 A fuse, then go to Step 5.
2	INSPECT IG1 RELAY FOR MALFUNCTION •  Switch the ignition off. •  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) •  Remove the IG1 relay. (See RELAY LOCATION.) •  Inspect the IG1 relay. (See RELAY INSPECTION.) •  Is the IG1 relay normal?	Yes	Go to the next step.
		No	Replace the IG1 relay, then go to Step 5. (See RELAY LOCATION.)
3	VERIFY CLIMATE CONTROL UNIT CONNECTOR CONDITION •  Disconnect the climate control unit connector. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO 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.
4	VERIFY FRONT BODY CONTROL MODULE (FBCM) CONNECTOR CONDITION •  Disconnect the front body control module (FBCM) connector. (See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.) •  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.
5	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT •  Inspect for continuity between climate control unit terminal 1D and C/U IG1 15 A fuse. •  Is there continuity?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify whether or not there is a common connector between climate control unit terminal and C/U IG1 15 A fuse. If there is a common connector: •  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Go to the next step.
6	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT •  Inspect for continuity between climate control unit terminal 1F and front body control module (FBCM) terminal 1C. •  Is there continuity?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify whether or not there is a common connector between climate control unit terminal and front body control module (FBCM) terminal. If there is a common connector: •  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Go to the next step.
7	INSPECT CLIMATE CONTROL UNIT •  Reconnect the disconnected connectors. •  Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) •  Clear DTCs using the M-MDS. •  Perform the climate control unit DTC inspection using the M-MDS. (See DTC DISPLAY [FULL-AUTO AIR CONDITIONER].) •  Are DTCs U300E:13 displayed?	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 [FULL-AUTO AIR CONDITIONER].) Go to the next step.
		No	Go to the next step.
8	VERIFY THAT NO OTHER DTCs ARE PRESENT •  Verify other DTCs displayed. (See DTC DISPLAY [FULL-AUTO AIR CONDITIONER].) •  Are any other DTCs output?	Yes	Perform the corresponding DTC inspection. (See DTC TABLE [FULL-AUTO AIR CONDITIONER].)
		No	DTC troubleshooting completed.

With Single Type Climate Control Unit

System malfunction location	•  Climate control unit power supply circuit open (IG2)
Detection condition	•  Malfunction in wiring harness between climate control unit and front body control module (FBCM)
Fail-safe function	Not applicable
Possible cause	•  Climate control unit connector malfunction •  Front body control module (FBCM) connector malfunction •  Open circuit in wiring harness between front body control module (FBCM) terminal and climate control unit terminal •  Climate control unit malfunction

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	VERIFY CLIMATE CONTROL UNIT CONNECTOR CONDITION •  Switch the ignition off. •  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) •  Disconnect the climate control unit connector. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO 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	VERIFY FRONT BODY CONTROL MODULE (FBCM) CONNECTOR CONDITION •  Disconnect the front body control module (FBCM) connector. (See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.) •  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.
3	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT •  Inspect for continuity between climate control unit terminal N and front body control module (FBCM) terminal 1C. •  Is there continuity?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify whether or not there is a common connector between climate control unit terminal and front body control module (FBCM) terminal. If there is a common connector: •  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit. Go to the next step.
4	INSPECT CLIMATE CONTROL UNIT •  Reconnect the disconnected connectors. •  Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) •  Clear DTCs using the M-MDS. •  Perform the climate control unit DTC inspection using the M-MDS. (See DTC DISPLAY [FULL-AUTO AIR CONDITIONER].) •  Are DTCs U300E:13 displayed?	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 [FULL-AUTO AIR CONDITIONER].) Go to the next step.
		No	Go to the next step.
5	VERIFY THAT NO OTHER DTCs ARE PRESENT •  Verify other DTCs displayed. (See DTC DISPLAY [FULL-AUTO AIR CONDITIONER].) •  Are any other DTCs output?	Yes	Perform the corresponding DTC inspection. (See DTC TABLE [FULL-AUTO AIR CONDITIONER].)
		No	DTC troubleshooting completed.