DTC P22A2:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)]

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Note

• To determine the malfunctioning part, proceed with the diagnostics from "Function Inspection Using M-MDS".

Details On DTCs

DESCRIPTION

Continuous monitoring of NOx sensor No.2 signal validity

DETECTION CONDITION

Determination conditions

•  A slow communication time of the NOx sensor No.2 signal, measured by the dosing control unit, was repeated 2 times.

Preconditions

•  Target heat amount of NOx sensor: 44—1026 kJ

•  Battery voltage: 10.9—16.0 V

•  Exhaust gas temperature sensor No.5: 849.96 °C {1561.9 °F} or less

•  CAN communication is normal at engine start for a continuous 20 s or more

•  Fuel injection amount: -0.4—11.2 mg/stroke

•  Air/fuel ratio of NOx sensor No.2: 1.3

•  The following DTCs are not detected:

―  Boost air temperature sensor: P007B:00, P007C:00, P007D:00

―  IAT sensor No.2: P00E9:00, P00EA:00, P00EB:00

―  MAF sensor: P0101:00, P0102:00, P0103:00

―  MAP sensor No.2: P0106:00, P0107:00, P0108:00

―  ECT sensor: P0116:00, P0117:00, P0118:00, P011A:00

―  Intake shutter valve position sensor: P0122:00, P0123:00

―  A/F sensor: P0131:00, P0132:00, P0137:00, P0138:00

―  NOx sensor No.1: P2080:00, P2200:00, P220A:00

―  NOx sensor No.2: P06EB:00, P220B:00, P220F:00, P229E:00, P239E:00

―  Exhaust gas temperature sensor: P161D:00, P161E:00, P166E:00, P0471:00, P0472:00, P0473:00

―  Exhaust gas temperature sensor No.1: P0545:00, P0546:00

―  Exhaust gas temperature sensor No.2: 2031:00, P2032:00, P2033:00

―  BARO sensor: P2227:00, P2228:00, P2229:00

―  PM sensor: P2453:00, P2454:00, P2455:00

―  Exhaust gas temperature sensor No.5: P2481:00, P2482:00, P2483:00

―  CAN system communication error: U029D:00, U029E:00

Drive cycle

•  2

Self test type

•  CMDTC self test

Sensor used

•  NOx sensor No.2

•  Dosing control unit

FAIL-SAFE FUNCTION

•  Not applicable

VEHICLE STATUS WHEN DTCs ARE OUTPUT

•  Illuminates selective catalytic reduction (SCR) warning light.

POSSIBLE CAUSE

•  NOx sensor No.2 connector or terminals malfunction

•  Dosing control unit connector or terminals malfunction

•  Exhaust gas temperature sensoer No.5 malfunction

•  Short to ground or open circuit in NOx sensor No.2 power supply circuit

―  Short to ground in wiring harness between SCR4 15 A fuse and NOx sensor No.2 terminal E

―  SCR4 15 A fuse malfunction

―  Open circuit in wiring harness between SCR relay No.2 terminal C and NOx sensor No.2 terminal E

•  Open or short circuit in wiring harness between the following terminals:

―  NOx sensor No.2 terminal B—dosing control unit terminal BK

―  NOx sensor No.2 terminal C—dosing control unit terminal BL

―  NOx sensor No.2 terminal D—body GND

•  NOx sensor No.2 malfunction

―  NOx sensor No.2 internal heater malfunction

―  NOx sensor No.2 control unit malfunction

•  Dosing control unit malfunction

DESCRIPTION	Continuous monitoring of NOx sensor No.2 signal validity
DETECTION CONDITION	Determination conditions	• A slow communication time of the NOx sensor No.2 signal, measured by the dosing control unit, was repeated 2 times.
Preconditions	• Target heat amount of NOx sensor: 44—1026 kJ • Battery voltage: 10.9—16.0 V • Exhaust gas temperature sensor No.5: 849.96 °C {1561.9 °F} or less • CAN communication is normal at engine start for a continuous 20 s or more • Fuel injection amount: -0.4—11.2 mg/stroke • Air/fuel ratio of NOx sensor No.2: 1.3 • The following DTCs are not detected: ― Boost air temperature sensor: P007B:00, P007C:00, P007D:00 ― IAT sensor No.2: P00E9:00, P00EA:00, P00EB:00 ― MAF sensor: P0101:00, P0102:00, P0103:00 ― MAP sensor No.2: P0106:00, P0107:00, P0108:00 ― ECT sensor: P0116:00, P0117:00, P0118:00, P011A:00 ― Intake shutter valve position sensor: P0122:00, P0123:00 ― A/F sensor: P0131:00, P0132:00, P0137:00, P0138:00 ― NOx sensor No.1: P2080:00, P2200:00, P220A:00 ― NOx sensor No.2: P06EB:00, P220B:00, P220F:00, P229E:00, P239E:00 ― Exhaust gas temperature sensor: P161D:00, P161E:00, P166E:00, P0471:00, P0472:00, P0473:00 ― Exhaust gas temperature sensor No.1: P0545:00, P0546:00 ― Exhaust gas temperature sensor No.2: 2031:00, P2032:00, P2033:00 ― BARO sensor: P2227:00, P2228:00, P2229:00 ― PM sensor: P2453:00, P2454:00, P2455:00 ― Exhaust gas temperature sensor No.5: P2481:00, P2482:00, P2483:00 ― CAN system communication error: U029D:00, U029E:00
Drive cycle	• 2
Self test type	• CMDTC self test
Sensor used	• NOx sensor No.2 • Dosing control unit
FAIL-SAFE FUNCTION	• Not applicable
VEHICLE STATUS WHEN DTCs ARE OUTPUT	• Illuminates selective catalytic reduction (SCR) warning light.
POSSIBLE CAUSE	• NOx sensor No.2 connector or terminals malfunction • Dosing control unit connector or terminals malfunction • Exhaust gas temperature sensoer No.5 malfunction • Short to ground or open circuit in NOx sensor No.2 power supply circuit ― Short to ground in wiring harness between SCR4 15 A fuse and NOx sensor No.2 terminal E ― SCR4 15 A fuse malfunction ― Open circuit in wiring harness between SCR relay No.2 terminal C and NOx sensor No.2 terminal E • Open or short circuit in wiring harness between the following terminals: ― NOx sensor No.2 terminal B—dosing control unit terminal BK ― NOx sensor No.2 terminal C—dosing control unit terminal BL ― NOx sensor No.2 terminal D—body GND • NOx sensor No.2 malfunction ― NOx sensor No.2 internal heater malfunction ― NOx sensor No.2 control unit malfunction • Dosing control unit malfunction

System Wiring Diagram

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Function Explanation (DTC Detection Outline)

• The dosing control unit detects the NOx concentration in the exhaust gas based on the NOx sensor No.2 signal.

• If the NOx value, which fluctuates according to the engine operation conditions, is way over the percentage indicating out of normal range, the dosing control unit stores a DTC.

Repeatability Verification Procedure

1. Perform the "COMPULSORY DIESEL PARTICULATE FILTER REGENERATION". (See COMPULSORY DIESEL PARTICULATE FILTER REGENERATION [SKYACTIV-D 2.2].)

2. Idle the engine for 1 min.

PID Item/Simulation Item Used In Diagnosis

PID/DATA monitor item table

—: Not applicable

Item	Definition	Unit	Condition/Specification
NOX_C_B1S2	NOx sensor No.2	— (ppm)	• Displays the exhaust gas NOx concentration after SCR converter

Function Inspection Using M-MDS

STEP

INSPECTION

RESULTS

ACTION

1

PURPOSE: VERIFY RELATED REPAIR INFORMATION AVAILABILITY

•  Verify related Service Information availability.

•  Is any related Service Information available?

Yes

Perform repair or diagnosis according to the available Service Information.

•  If the vehicle is not repaired, go to the next step.

No

Go to the next step.

2

PURPOSE: RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION

Note

•  Recording can be facilitated using the screen capture function of the PC.

•  Record the FREEZE FRAME DATA/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (NOx sensor No.2) on the repair order.

—

Go to the next step.

3

PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY OTHER RELATED DTCs OCCURRING

•  Switch the ignition off, then ON (engine off).

•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.

•  Is the PENDING CODE/DTC P2200:00 or U029D:00 also present?

Yes

Go to the applicable DTC inspection.

(See DTC P2200:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

(See DTC U029D:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

Repair or replace the applicable wiring harness or connector parts.

Go to the troubleshooting procedure to perform the procedure from Step 6.

No

Go to the next step.

4

PURPOSE: VERIFY IF THERE IS PID ITEM CAUSING DRASTIC CHANGES OF ACCELERATION FLUCTUATION BY INPUT SIGNAL TO PCM OR DOSING CONTROL UNIT

•  Access the following PIDs using the M-MDS:
(See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

―  NOX_C_B1S2

•  Is there any signal that is far out of specification?

Yes

Go to the next step.

No

Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.

5

PURPOSE: VERIFY CONNECTOR CONNECTIONS

•  Access the following PIDs using the M-MDS:
(See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

―  NOX_C_B1S2

•  When the following parts are shaken, does the PID value include a PID item which has changed?

―  NOx sensor No.2

―  Dosing control unit

Yes

Inspect the related wiring harness and connector.

•  Repair or replace the malfunctioning part.

No

Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.

STEP	INSPECTION	RESULTS	ACTION
1	PURPOSE: VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
No	Go to the next step.
2	PURPOSE: RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the FREEZE FRAME DATA/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (NOx sensor No.2) on the repair order.	—	Go to the next step.
3	PURPOSE: VERIFY IF DIAGNOSTIC RESULT IS AFFECTED BY OTHER RELATED DTCs OCCURRING • Switch the ignition off, then ON (engine off). • Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure. • Is the PENDING CODE/DTC P2200:00 or U029D:00 also present?	Yes	Go to the applicable DTC inspection. (See DTC P2200:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) (See DTC U029D:00 [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) Repair or replace the applicable wiring harness or connector parts. Go to the troubleshooting procedure to perform the procedure from Step 6.
No	Go to the next step.
4	PURPOSE: VERIFY IF THERE IS PID ITEM CAUSING DRASTIC CHANGES OF ACCELERATION FLUCTUATION BY INPUT SIGNAL TO PCM OR DOSING CONTROL UNIT • Access the following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) ― NOX_C_B1S2 • Is there any signal that is far out of specification?	Yes	Go to the next step.
No	Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.
5	PURPOSE: VERIFY CONNECTOR CONNECTIONS • Access the following PIDs using the M-MDS: (See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) ― NOX_C_B1S2 • When the following parts are shaken, does the PID value include a PID item which has changed? ― NOx sensor No.2 ― Dosing control unit	Yes	Inspect the related wiring harness and connector. • Repair or replace the malfunctioning part.
No	Go to Troubleshooting Diagnostic Procedure to perform the procedure from step 1.

Troubleshooting Diagnostic Procedure

Intention of troubleshooting procedure

• Step 1

― Perform inspection of exhaust gas temperature sensor No.5.

• Step 2

― Perform inspection of NOx sensor No.2 power supply related parts.

• Step 3—5

― Perform inspection of NOx sensor No.2 signal related parts.

• Step 6—7

― Verify that primary malfunction is resolved and there are no other malfunctions.

STEP

INSPECTION

RESULTS

ACTION

1

PURPOSE: DETERMINE INTEGRITY OF EXHAUST GAS TEMPERATURE SENSOR No.5

•  Inspect the exhaust gas temperature sensor No.5 .
(See EXHAUST GAS TEMPERATURE SENSOR INSPECTION [SKYACTIV-D 2.2].)

•  Is there any malfunction?

Yes

Replace the exhaust gas temperature sensor No.5, then go to Step 6.

(See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

No

Go to the next step.

2

PURPOSE: INSPECT NOx SENSOR No.2 POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT

•  Switch the ignition off.

•  Disconnect the NOx sensor No.2 is disconnected.

•  Switch the ignition ON (engine off).

Note

•  Another DTC may be stored by the dosing control unit detecting an open circuit.

•  Measure the voltage at the NOx sensor No.2 terminal E (wiring harness-side).

•  Is the voltage B+?

Yes

Go to the next step.

No

Inspect the SCR4 15 A fuse.

•  If the fuse is blown:

―  Refer to the wiring diagram and verify whether or not there is a common connector between SCR4 15 A fuse and NOx sensor No.2 terminal E.

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.

•  If the fuse is normal:

―  Refer to the wiring diagram and verify whether or not there is a common connector between SCR4 15 A fuse and NOx sensor No.2 terminal E.

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 6.

3

PURPOSE: INSPECT NOx SENSOR No.2 CIRCUIT FOR SHORT TO GROUND

•  Verify that the NOx sensor No.2 and dosing control unit connectors are disconnected.

•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:

―  NOx sensor No.2 terminal B

―  NOx sensor No.2 terminal C

•  Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

•  NOx sensor No.2 terminal B—dosing control unit terminal BK

•  NOx sensor No.2 terminal C—dosing control unit terminal BL

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.

Go to Step 6.

No

Go to the next step.

4

PURPOSE: INSPECT NOx SENSOR No.2 CIRCUIT FOR SHORT TO POWER SUPPLY

•  Verify that the NOx sensor No.2 and dosing control unit connectors are disconnected.

•  Switch the ignition ON (engine off).

Note

•  Another DTC may be stored by the dosing control unit detecting an open circuit.

•  Measure the voltage at the following terminals (wiring harness-side).

―  NOx sensor No.2 terminal B

―  NOx sensor No.2 terminal C

―  NOx sensor No.2 terminal D

•  Is the voltage 0 V?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

•  NOx sensor No.2 terminal B—dosing control unit terminal BK

•  NOx sensor No.2 terminal C—dosing control unit terminal BL

•  NOx sensor No.2 terminal D—body GND

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 power supply.

•  Repair or replace the malfunctioning part.

If there is no common connector:

•  Repair or replace the wiring harness which has a short to power supply.

Go to Step 6.

5

PURPOSE: INSPECT NOx SENSOR No.2 CIRCUIT FOR OPEN CIRCUIT

•  Verify that the NOx sensor No.2 and dosing control unit connectors are disconnected.

•  Switch the ignition off.

•  Inspect for continuity between the following terminals (wiring harness-side):

―  NOx sensor No.2 terminal B—dosing control unit terminal BK

―  NOx sensor No.2 terminal C—osing control unit terminal BL

―  NOx sensor No.2 terminal D—body GND

•  Is there continuity?

Yes

Replace the NOx sensor No.2, then go to the next step.

(See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

No

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

•  NOx sensor No.2 terminal B—dosing control unit terminal BK

•  NOx sensor No.2 terminal C—dosing control unit terminal BL

•  NOx sensor No.2 terminal D—body GND

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

PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION

•  Always reconnect all disconnected connectors.

•  Clear the DTC from the dosing control unit memory using the M-MDS.
(See CLEARING DTC [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

•  Implement the repeatability verification procedure.
(See Repeatability Verification Procedure.)

•  Perform the Pending Trouble Code Access Procedure.
(See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

•  Is the same Pending DTC present?

Yes

Repeat the inspection from Step 1.

•  If the malfunction recurs, replace the dosing control unit.
(See DOSING CONTROL UNIT REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

Go to the next step.

No

Go to the next step.

7

PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION

•  Is any other DTC or pending code stored?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

No

DTC troubleshooting completed.

STEP	INSPECTION	RESULTS	ACTION
1	PURPOSE: DETERMINE INTEGRITY OF EXHAUST GAS TEMPERATURE SENSOR No.5 • Inspect the exhaust gas temperature sensor No.5 . (See EXHAUST GAS TEMPERATURE SENSOR INSPECTION [SKYACTIV-D 2.2].) • Is there any malfunction?	Yes	Replace the exhaust gas temperature sensor No.5, then go to Step 6. (See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
1		No	Go to the next step.
2	PURPOSE: INSPECT NOx SENSOR No.2 POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT • Switch the ignition off. • Disconnect the NOx sensor No.2 is disconnected. • Switch the ignition ON (engine off). Note • Another DTC may be stored by the dosing control unit detecting an open circuit. • Measure the voltage at the NOx sensor No.2 terminal E (wiring harness-side). • Is the voltage B+?	Yes	Go to the next step.
2		No	Inspect the SCR4 15 A fuse. • If the fuse is blown: ― Refer to the wiring diagram and verify whether or not there is a common connector between SCR4 15 A fuse and NOx sensor No.2 terminal E. 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. • If the fuse is normal: ― Refer to the wiring diagram and verify whether or not there is a common connector between SCR4 15 A fuse and NOx sensor No.2 terminal E. 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 6.
3	PURPOSE: INSPECT NOx SENSOR No.2 CIRCUIT FOR SHORT TO GROUND • Verify that the NOx sensor No.2 and dosing control unit connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― NOx sensor No.2 terminal B ― NOx sensor No.2 terminal C • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • NOx sensor No.2 terminal B—dosing control unit terminal BK • NOx sensor No.2 terminal C—dosing control unit terminal BL 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. Go to Step 6.
3		No	Go to the next step.
4	PURPOSE: INSPECT NOx SENSOR No.2 CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the NOx sensor No.2 and dosing control unit connectors are disconnected. • Switch the ignition ON (engine off). Note • Another DTC may be stored by the dosing control unit detecting an open circuit. • Measure the voltage at the following terminals (wiring harness-side). ― NOx sensor No.2 terminal B ― NOx sensor No.2 terminal C ― NOx sensor No.2 terminal D • Is the voltage 0 V?	Yes	Go to the next step.
4		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • NOx sensor No.2 terminal B—dosing control unit terminal BK • NOx sensor No.2 terminal C—dosing control unit terminal BL • NOx sensor No.2 terminal D—body GND 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 power supply. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to power supply. Go to Step 6.
5	PURPOSE: INSPECT NOx SENSOR No.2 CIRCUIT FOR OPEN CIRCUIT • Verify that the NOx sensor No.2 and dosing control unit connectors are disconnected. • Switch the ignition off. • Inspect for continuity between the following terminals (wiring harness-side): ― NOx sensor No.2 terminal B—dosing control unit terminal BK ― NOx sensor No.2 terminal C—osing control unit terminal BL ― NOx sensor No.2 terminal D—body GND • Is there continuity?	Yes	Replace the NOx sensor No.2, then go to the next step. (See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
5		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • NOx sensor No.2 terminal B—dosing control unit terminal BK • NOx sensor No.2 terminal C—dosing control unit terminal BL • NOx sensor No.2 terminal D—body GND 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	PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION • Always reconnect all disconnected connectors. • Clear the DTC from the dosing control unit memory using the M-MDS. (See CLEARING DTC [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) • Implement the repeatability verification procedure. (See Repeatability Verification Procedure.) • Perform the Pending Trouble Code Access Procedure. (See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) • Is the same Pending DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the dosing control unit. (See DOSING CONTROL UNIT REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) Go to the next step.
6		No	Go to the next step.
7	PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION • Is any other DTC or pending code stored?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)
7		No	DTC troubleshooting completed.