DTC U3003:16, U3003:17 [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)]

id0702k2731000

Without i-stop

System malfunction location

•  U3003:16: Climate control unit power supply circuit voltage below threshold (10 V or less)

•  U3003:17: Climate control unit power supply circuit voltage above threshold (17.3 V or more)

Detection condition

•  Climate control unit power supply voltage is other than 10.01—17.29 V

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

•  ROOM 25 A fuse malfunction

•  INTERIOR1 15 A fuse malfunction

•  IG2 30 A fuse malfunction

•  C/U IG1 15 A fuse malfunction

•  METER1 10 A fuse malfunction

•  Short to ground in wiring harness between the following terminals:

―  ROOM 25 A fuse—climate control unit terminal 2A

―  IG2 30 A fuse—climate control unit terminal 2C

―  METER1 10 A fuse—IG1 relay No.2 terminal A

•  Open circuit in wiring harness between the following terminals:

―  Battery positive terminal—climate control unit terminal 2A

―  Battery positive terminal—climate control unit terminal 2C

―  Battery positive terminal—IG1 relay No.2 terminal A

System malfunction location	• U3003:16: Climate control unit power supply circuit voltage below threshold (10 V or less) • U3003:17: Climate control unit power supply circuit voltage above threshold (17.3 V or more)
Detection condition	• Climate control unit power supply voltage is other than 10.01—17.29 V
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 • ROOM 25 A fuse malfunction • INTERIOR1 15 A fuse malfunction • IG2 30 A fuse malfunction • C/U IG1 15 A fuse malfunction • METER1 10 A fuse malfunction • Short to ground in wiring harness between the following terminals: ― ROOM 25 A fuse—climate control unit terminal 2A ― IG2 30 A fuse—climate control unit terminal 2C ― METER1 10 A fuse—IG1 relay No.2 terminal A • Open circuit in wiring harness between the following terminals: ― Battery positive terminal—climate control unit terminal 2A ― Battery positive terminal—climate control unit terminal 2C ― Battery positive terminal—IG1 relay No.2 terminal A

Diagnostic procedure

STEP

INSPECTION

ACTION

1

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 7.

(See RELAY LOCATION.)

2

INSPECT PCM DTC (INSPECT GENERATOR CIRCUIT)

•  Switch the ignition off.

•  Connect the M-MDS to the DLC-2.

•  Perform the PCM DTC inspection using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].)

(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].)

(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION))].)

(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION))].)

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)

(See DTC TABLE [PCM (SKYACTIV-G 2.5T)].)

(See DTC TABLE [PCM (SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION))].)

(See DTC TABLE [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION))].)

No

Go to the next step.

3

INSPECT FUSE

•  Switch the ignition off.

•  Disconnect the negative battery terminal.
(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

•  Remove the following fuses.

―  ROOM 25 A fuse

―  INTERIOR1 15 A fuse

―  IG2 30 A fuse

―  METER1 10 A fuse

―  C/U IG1 15 A fuse

•  Are the fuses normal?

Yes

Install the all fuses, then go to the next step.

No

If the ROOM 25 A fuse or INTERIOR1 15 A fuse or IG2 30 A fuse or C/U IG1 15 A 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 METER1 10 A fuse is blown:

•  Refer to the wiring diagram and verify whether or not there is a common connector between METER1 10 A fuse and IG1 relay No.1 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 7.

4

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 7.

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 7.

6

INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT

•  Inspect for continuity between the following terminals (wiring harness-side) and battery positive terminal.

―  Climate control unit terminal 2A

―  Climate control unit terminal 2C

―  Ignition relay (IG1_STAB) terminal A

•  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/Ignition relay (IG1_STAB) 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 the next step.

7

VERIFY THAT SAME DTC IS NOT OUTPUT AGAIN

•  Reconnect the disconnected connectors.

•  Connect the negative battery terminal.
(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

•  Clear the DTC from the climate control unit memory using the M-MDS.
(See CLEARING DTC [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)

•  Perform the DTC inspection for the climate control unit 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.

8

VERIFY THAT NO OTHER DTCs ARE PRESENT

•  Verify other DTCs displayed.

•  Are any other DTCs displayed?

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)

No

DTC troubleshooting completed.

STEP	INSPECTION	ACTION
1	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 7. (See RELAY LOCATION.)
2	INSPECT PCM DTC (INSPECT GENERATOR CIRCUIT) • Switch the ignition off. • Connect the M-MDS to the DLC-2. • Perform the PCM DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].) (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION))].) (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION))].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (SKYACTIV-D 2.2)].) (See DTC TABLE [PCM (SKYACTIV-G 2.5T)].) (See DTC TABLE [PCM (SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION))].) (See DTC TABLE [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION))].)
No	Go to the next step.
3	INSPECT FUSE • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Remove the following fuses. ― ROOM 25 A fuse ― INTERIOR1 15 A fuse ― IG2 30 A fuse ― METER1 10 A fuse ― C/U IG1 15 A fuse • Are the fuses normal?	Yes	Install the all fuses, then go to the next step.
No	If the ROOM 25 A fuse or INTERIOR1 15 A fuse or IG2 30 A fuse or C/U IG1 15 A 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 METER1 10 A fuse is blown: • Refer to the wiring diagram and verify whether or not there is a common connector between METER1 10 A fuse and IG1 relay No.1 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 7.
4	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 7.
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 7.
6	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between the following terminals (wiring harness-side) and battery positive terminal. ― Climate control unit terminal 2A ― Climate control unit terminal 2C ― Ignition relay (IG1_STAB) terminal A • 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/Ignition relay (IG1_STAB) 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 the next step.
7	VERIFY THAT SAME DTC IS NOT OUTPUT AGAIN • Reconnect the disconnected connectors. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Clear the DTC from the climate control unit memory using the M-MDS. (See CLEARING DTC [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].) • Perform the DTC inspection for the climate control unit 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.
8	VERIFY THAT NO OTHER DTCs ARE PRESENT • Verify other DTCs displayed. • Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)
No	DTC troubleshooting completed.

With i-stop

System malfunction location

•  U3003:16: Climate control unit power supply circuit voltage below threshold (10 V or less)

•  U3003:17: Climate control unit power supply circuit voltage above threshold (17.3 V or more)

Detection condition

•  Climate control unit power supply voltage is other than 10.01—17.29 V

Fail-safe function

Not applicable

Possible cause

•  Battery malfunction

•  Generator system malfunction

•  Climate control unit malfunction

•  Climate control unit connector malfunction

•  Ignition relay (IG1_STAB) malfunction

•  IG1 relay No.1 malfunction

•  ROOM 25 A fuse malfunction

•  INTERIOR1 15 A fuse malfunction

•  METER2 10 A fuse malfunction

•  C/U IG1 15A fuse malfunction

•  METER1 10 A fuse malfunction

•  Short to ground in wiring harness between the following terminals:

―  ROOM 25A fuse—climate control unit terminal 2A

―  METER2 10 A fuse—climate control unit terminal 2C

―  C/U IG1 15 A fuse—IG1 relay No.2 terminal A

•  Open circuit in wiring harness between the following terminals:

―  Battery positive terminal—climate control unit terminal 2A

―  DC-DC CONVERTER (without i-ELOOP) terminal K-climate control unit terminal 2C

―  Battery positive terminal—IG1 relay No.2 terminal E

System malfunction location	• U3003:16: Climate control unit power supply circuit voltage below threshold (10 V or less) • U3003:17: Climate control unit power supply circuit voltage above threshold (17.3 V or more)
Detection condition	• Climate control unit power supply voltage is other than 10.01—17.29 V
Fail-safe function	Not applicable
Possible cause	• Battery malfunction • Generator system malfunction • Climate control unit malfunction • Climate control unit connector malfunction • Ignition relay (IG1_STAB) malfunction • IG1 relay No.1 malfunction • ROOM 25 A fuse malfunction • INTERIOR1 15 A fuse malfunction • METER2 10 A fuse malfunction • C/U IG1 15A fuse malfunction • METER1 10 A fuse malfunction • Short to ground in wiring harness between the following terminals: ― ROOM 25A fuse—climate control unit terminal 2A ― METER2 10 A fuse—climate control unit terminal 2C ― C/U IG1 15 A fuse—IG1 relay No.2 terminal A • Open circuit in wiring harness between the following terminals: ― Battery positive terminal—climate control unit terminal 2A ― DC-DC CONVERTER (without i-ELOOP) terminal K-climate control unit terminal 2C ― Battery positive terminal—IG1 relay No.2 terminal E

Diagnostic procedure

STEP

INSPECTION

ACTION

1

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 7.

(See RELAY LOCATION.)

2

INSPECT PCM DTC (INSPECT GENERATOR CIRCUIT)

•  Switch the ignition off.

•  Connect the M-MDS to the DLC-2.

•  Perform the PCM DTC inspection using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].)

(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].)

(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION))].)

(See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION))].)

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)

(See DTC TABLE [PCM (SKYACTIV-G 2.5T)].)

(See DTC TABLE [PCM (SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION))].)

(See DTC TABLE [PCM (SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION))].)

No

Go to the next step.

3

INSPECT FUSE

•  Switch the ignition off.

•  Disconnect the negative battery terminal.
(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

•  Remove the following fuses.

―  ROOM 25 A fuse

―  INTERIOR1 15 A fuse

―  METER2 10 A fuse

―  C/U IG1 15 A fuse

•  Are the fuses normal?

Yes

Install the all fuses, then go to the next step.

No

If the ROOM 25 A fuse or INTERIOR1 15 A fuse or METER2 10 A 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 C/U IG1 15 A fuse is blown:

•  Refer to the wiring diagram and verify whether or not there is a common connector between C/U IG1 15 A fuse and IG1 relay No.1 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 7.

4

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 7.

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 7.

6

INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT

•  Inspect for continuity between the following terminals (wiring harness-side) and battery positive terminal.

―  Climate control unit terminal 2A

―  Climate control unit terminal 2C

―  IG1 relay No.2 terminal E

•  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/IG1 relay No.2 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 the next step.

7

VERIFY THAT SAME DTC IS NOT OUTPUT AGAIN

•  Reconnect the disconnected connectors.

•  Connect the negative battery terminal.
(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

•  Clear the DTC from the climate control unit memory using the M-MDS.
(See CLEARING DTC [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)

•  Perform the DTC inspection for the climate control unit 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.

8

VERIFY THAT NO OTHER DTCs ARE PRESENT

•  Verify other DTCs displayed.

•  Are any other DTCs displayed?

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)

No

DTC troubleshooting completed.

STEP	INSPECTION		ACTION
1	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.
1		No	Replace the IG1 relay No.1 or/and Ignition relay (IG1_STAB), then go to Step 7. (See RELAY LOCATION.)
2	INSPECT PCM DTC (INSPECT GENERATOR CIRCUIT) • Switch the ignition off. • Connect the M-MDS to the DLC-2. • Perform the PCM DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].) (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION))].) (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION))].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (SKYACTIV-D 2.2)].) (See DTC TABLE [PCM (SKYACTIV-G 2.5T)].) (See DTC TABLE [PCM (SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION))].) (See DTC TABLE [PCM (SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION))].)
2		No	Go to the next step.
3	INSPECT FUSE • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Remove the following fuses. ― ROOM 25 A fuse ― INTERIOR1 15 A fuse ― METER2 10 A fuse ― C/U IG1 15 A fuse • Are the fuses normal?	Yes	Install the all fuses, then go to the next step.
3		No	If the ROOM 25 A fuse or INTERIOR1 15 A fuse or METER2 10 A 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 C/U IG1 15 A fuse is blown: • Refer to the wiring diagram and verify whether or not there is a common connector between C/U IG1 15 A fuse and IG1 relay No.1 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 7.
4	INSPECT BATTERY • Inspect the battery. (See BATTERY INSPECTION.) • Is the battery normal?	Yes	Go to the next step.
4		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 7.
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.
5		No	Repair/replace the connector or terminal. After repair procedure, go to Step 7.
6	INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT • Inspect for continuity between the following terminals (wiring harness-side) and battery positive terminal. ― Climate control unit terminal 2A ― Climate control unit terminal 2C ― IG1 relay No.2 terminal E • Is there continuity?	Yes	Go to the next step.
6		No	Refer to the wiring diagram and verify whether or not there is a common connector between climate control unit terminal/IG1 relay No.2 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 the next step.
7	VERIFY THAT SAME DTC IS NOT OUTPUT AGAIN • Reconnect the disconnected connectors. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Clear the DTC from the climate control unit memory using the M-MDS. (See CLEARING DTC [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].) • Perform the DTC inspection for the climate control unit 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.
7		No	Go to the next step.
8	VERIFY THAT NO OTHER DTCs ARE PRESENT • Verify other DTCs displayed. • Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [CLIMATE CONTROL UNIT (FULL-AUTO AIR CONDITIONER)].)
8		No	DTC troubleshooting completed.