DTC U300E:13 [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)]

id0702k2731800

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 IG1 relay •  Malfunction in wiring harness between climate control unit and front body control module (FBCM)
Fail-safe function	Not applicable
Possible cause	•  Battery malfunction •  Generator system malfunction •  Climate control unit malfunction •  Climate control unit connector malfunction •  IG1 relay No.1 malfunction •  IG1 relay No.2 malfunction •  C/U IG1 15 A fuse malfunction •  IG2 30 A fuse malfunction •  METER1 10 A fuse malfunction •  Front body control module (FBCM) connector or terminal malfunction •  Short to ground in wiring harness between the following terminals: ―  Climate control unit terminal 1X—front body control module (FBCM) terminal 1C ―  Climate control unit terminal 2C—IG2 30 A fuse •  Open circuit in wiring harness between the following terminals: ―  Climate control unit terminal 1X—front body control module (FBCM) terminal 1C ―  Climate control unit terminal 2C—battery positive terminal

Diagnostic procedure

STEP	INSPECTION		ACTION
1	INSPECT BATTERY •  Inspect the battery. (See BATTERY INSPECTION.) •  Is the battery normal?	Yes	Go to the next step.
		No	Replace or charge the battery. (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION)].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION)].) (See BATTERY RECHARGING.) Then go to Step 9.
2	INSPECT GENERATOR •  Inspect the generator. (See GENERATOR INSPECTION [WITHOUT i-ELOOP (SKYACTIV-D 2.2)].) (See GENERATOR INSPECTION [SKYACTIV-G 2.5T].) (See GENERATOR INSPECTION [WITHOUT i-ELOOP (SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION))].) •  Is the battery normal?	Yes	Go to the next step.
		No	Replace or charge the generator. (See GENERATOR INSPECTION [WITHOUT i-ELOOP (SKYACTIV-D 2.2)].) (See GENERATOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].) (See GENERATOR INSPECTION [WITHOUT i-ELOOP (SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION))].) Then go to Step 9.
3	INSPECT FUSE •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Remove the following fuses. ―  C/U IG1 15 A fuse ―  IG2 30 A fuse ―  METER1 10 A fuse •  Are the fuses normal?	Yes	Install the all fuses, then go to the next step.
		No	If the fuse is blown: •  Refer to the wiring diagram and verify whether or not there is a common connector between the blown fuse and climate control unit 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 a short to ground. ―  Repair or replace the malfunctioning part. If there is no common connector: ―  Repair or replace the wiring harness which has a short to ground. •  Replace the fuse. If the fuse is damaged: •  Replace the fuse. Then go to Step 9.
4	INSPECT IG1 RELAY No.1 AND No.2 FOR MALFUNCTION •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Remove the IG1 relay No.1 and No.2. (See RELAY LOCATION.) •  Inspect the IG1 relay No.1 and No.2. (See RELAY INSPECTION.) •  Is the IG1 relay No.1 and No.2 normal?	Yes	Go to the next step.
		No	Replace the IG1 relay No.1 or/and No.2, Then go to Step 9. (See RELAY LOCATION.)
5	VERIFY CLIMATE CONTROL UNIT CONNECTOR CONDITION •  Disconnect the climate control unit connector. (See CLIMATE CONTROL UNIT 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 Step 9.
6	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 Step 9.
7	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT •  Inspect for continuity between the following terminals (wiring harness-side): ―  Climate control unit terminal 2C—battery positive terminal •  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 battery positive 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 Step 9.
8	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT •  Inspect for continuity between the following terminals (wiring harness-side): ―  Climate control unit terminal 1X—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.
9	INSPECT CLIMATE CONTROL UNIT •  Reconnect the disconnected connectors. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Clear DTCs using the M-MDS. •  Perform the climate control unit DTC inspection using the M-MDS. (See DTC DISPLAY [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].) •  Is the same Pending DTC present?	Yes	Repeat the inspection from Step 1. •  If the malfunction recurs, replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION.) Go to the next step.
		No	Go to the next step.
10	VERIFY THAT NO OTHER DTCs ARE PRESENT •  Verify other DTCs displayed. (See DTC DISPLAY [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].) •  Are any other DTCs output?	Yes	Perform the corresponding DTC inspection. (See DTC TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)
		No	DTC troubleshooting completed.

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 IG1 relay •  Malfunction in wiring harness between climate control unit and front body control module (FBCM)
Fail-safe function	Not applicable
Possible cause	•  Battery malfunction •  Generator system malfunction •  Climate control unit malfunction •  Climate control unit connector malfunction •  IG1 relay No.1 malfunction •  Ignition relay (IG1_STAB) malfunction •  C/U IG1 15 A fuse malfunction •  METER2 10 A fuse malfunction •  Front body control module (FBCM) connector or terminal malfunction •  Short to ground in wiring harness between the following terminals: ―  Climate control unit terminal 1X—front body control module (FBCM) terminal 1C ―  Climate control unit terminal 2C—METER2 10 A fuse •  Open circuit in wiring harness between the following terminals: ―  Climate control unit terminal 1X—front body control module (FBCM) terminal 1C ―  Climate control unit terminal 2C—DC-DC converter (Without i-ELOOP) terminal K ―  Climate control unit terminal 2C—DC-DC converter (With i-ELOOP) terminal 2A

Diagnostic procedure

STEP	INSPECTION		ACTION
1	INSPECT BATTERY •  Inspect the battery. (See BATTERY INSPECTION.) •  Is the battery normal?	Yes	Go to the next step.
		No	Replace or charge the battery. (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION)].) (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION)].) (See BATTERY RECHARGING.) Then go to Step 9.
2	INSPECT GENERATOR •  Inspect the generator. (See GENERATOR INSPECTION [SKYACTIV-G 2.5T].) (See GENERATOR INSPECTION [WITHOUT i-ELOOP (SKYACTIV-D 2.2)].) (See GENERATOR INSPECTION [WITHOUT i-ELOOP (SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION))].) •  Is the battery normal?	Yes	Go to the next step.
		No	Replace or charge the generator. (See GENERATOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].) (See GENERATOR REMOVAL/INSTALLATION [WITHOUT i-ELOOP (SKYACTIV-D 2.2)].) (See GENERATOR REMOVAL/INSTALLATION [WITHOUT i-ELOOP (SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION))].) Then go to Step 9.
3	INSPECT FUSE •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Remove the following fuses. ―  C/U IG1 15 A fuse ―  METER2 10 A fuse •  Are the fuses normal?	Yes	Install the all fuses, then go to the next step.
		No	If the fuse is blown: •  Refer to the wiring diagram and verify whether or not there is a common connector between the blown fuse and climate control unit 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 a short to ground. ―  Repair or replace the malfunctioning part. If there is no common connector: ―  Repair or replace the wiring harness which has a short to ground. •  Replace the fuse. If the fuse is damaged: •  Replace the fuse. Then go to Step 9.
4	INSPECT IG1 RELAY No.1 AND IGNITION RELAY (IG1_STAB) FOR MALFUNCTION •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Remove the IG1 relay No.1 and Ignition relay (IG1_STAB). (See RELAY LOCATION.) •  Inspect the IG1 relay No.1 and Ignition relay (IG1_STAB). (See RELAY INSPECTION.) •  Is the IG1 relay No.1 and Ignition relay (IG1_STAB) normal?	Yes	Go to the next step.
		No	Replace the IG1 relay No.1 or/and Ignition relay (IG1_STAB), Then go to Step 9. (See RELAY LOCATION.)
5	VERIFY CLIMATE CONTROL UNIT CONNECTOR CONDITION •  Disconnect the climate control unit connector. (See CLIMATE CONTROL UNIT 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 Step 9.
6	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 Step 9.
7	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT •  Inspect for continuity between the following terminals (wiring harness-side): ―  Climate control unit terminal 2C—DC-DC converter (Without i-ELOOP) terminal K ―  Climate control unit terminal 2C—DC-DC converter (With i-ELOOP) terminal 2A •  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 battery positive 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 Step 9.
8	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT •  Inspect for continuity between the following terminals (wiring harness-side): ―  Climate control unit terminal 1X—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.
9	INSPECT CLIMATE CONTROL UNIT •  Reconnect the disconnected connectors. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Clear DTCs using the M-MDS. •  Perform the climate control unit DTC inspection using the M-MDS. (See DTC DISPLAY [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].) •  Is the same Pending DTC present?	Yes	Repeat the inspection from Step 1. •  If the malfunction recurs, replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION.) Go to the next step.
		No	Go to the next step.
10	VERIFY THAT NO OTHER DTCs ARE PRESENT •  Verify other DTCs displayed. (See DTC DISPLAY [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].) •  Are any other DTCs output?	Yes	Perform the corresponding DTC inspection. (See DTC TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)
		No	DTC troubleshooting completed.