NO.30 AMMONIA ODOR [SKYACTIV-D 2.2]

id0103g1855000

30

AMMONIA ODOR

DESCRIPTION

•  There is an ammonia odor from the cabin interior/exterior.

POSSIBLE CAUSE

•  PCM DTC is stored.

•  Dosing control unit DTC is stored.

•  SCR system malfunction

―  Urea injector malfunction

―  Urea PUMP malfunction

―  Urea hose malfunction (AdBlue^® leakage)

―  Urea tank malfunction (AdBlue^® leakage)

―  SCR converter malfunction

―  Exhaust piping damage (such as urea mixer)

•  Exhaust gas temperature sensor No.5 malfunction

•  Nox sensor No.1/No.2 malfunction

•  Inferior fuel used (sulfur content is high)

30	AMMONIA ODOR
DESCRIPTION	• There is an ammonia odor from the cabin interior/exterior.
POSSIBLE CAUSE	• PCM DTC is stored. • Dosing control unit DTC is stored. • SCR system malfunction ― Urea injector malfunction ― Urea PUMP malfunction ― Urea hose malfunction (AdBlue^® leakage) ― Urea tank malfunction (AdBlue^® leakage) ― SCR converter malfunction ― Exhaust piping damage (such as urea mixer) • Exhaust gas temperature sensor No.5 malfunction • Nox sensor No.1/No.2 malfunction • Inferior fuel used (sulfur content is high)

Diagnostic Procedure

STEP

INSPECTION

RESULTS

ACTION

1

VERIFY PCM DTC

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

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

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

No

Go to the next step.

2

VERIFY DOSING CONTORL UNIT DTC

•  Retrieve dosing control unit DTCs using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

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

No

Go to the next step.

3

INSPECT FOR AMMONIA ODOR LEAKAGE FROM SCR SYSTEM

•  Visually inspect the following:

―  Ammonia leakage from the urea injector, SCR converter, hose, pipe, urea tank

―  Clamp installation condition for each hose and pipe

―  Securing condition of each part due to deterioration such as clamp rubber

•  Are all items normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning part according to the inspection results, then go to Step 8.

4

INSPECT SCR SYSTEM RELATED PARTS

•  Inspect the following parts:

―  Urea injector
(See UREA INJECTOR INSPECTION [SKYACTIV-D 2.2].)

―  Urea PUMP
(See UREA PUMP INSPECTION [SKYACTIV-D 2.2].)

•  Are all items normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning part according to the inspection results, then go to Step 8.

(See UREA INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

(See UREA PUMP REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

5

INSPECT 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 the exhaust gas temperature sensor No.5 normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning part according to the inspection results, then go to Step 8.

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

6

INSPECT NOx SENSOR NO.1/NO.2

•  Inspect the NOx sensor No.1/No.2.
(See NOx SENSOR INSPECTION [SKYACTIV-D 2.2].)

•  Is the NOx sensor No.1/No.2 normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning part according to the inspection results, then go to Step 8.

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

7

INSPECT A/F SENSOR

•  Inspect the A/F sensor.
(See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-D 2.2].)

•  Is the A/F sensor normal?

Yes

Go to the next step.

No

Repair or replace the malfunctioning part according to the inspection results, then go to Step 8.

(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

8

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

•  Has the malfunction symptom been eliminated?

Yes

Complete the symptom troubleshooting.(Explain repair contents to customer)

No

Repeat the inspection from Step 1.

STEP	INSPECTION	RESULTS	ACTION
1	VERIFY PCM DTC • Retrieve PCM DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-D 2.2)].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
1		No	Go to the next step.
2	VERIFY DOSING CONTORL UNIT DTC • Retrieve dosing control unit DTCs using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [DOSING CONTROL UNIT (SKYACTIV-D 2.2)].)
2		No	Go to the next step.
3	INSPECT FOR AMMONIA ODOR LEAKAGE FROM SCR SYSTEM • Visually inspect the following: ― Ammonia leakage from the urea injector, SCR converter, hose, pipe, urea tank ― Clamp installation condition for each hose and pipe ― Securing condition of each part due to deterioration such as clamp rubber • Are all items normal?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning part according to the inspection results, then go to Step 8.
4	INSPECT SCR SYSTEM RELATED PARTS • Inspect the following parts: ― Urea injector (See UREA INJECTOR INSPECTION [SKYACTIV-D 2.2].) ― Urea PUMP (See UREA PUMP INSPECTION [SKYACTIV-D 2.2].) • Are all items normal?	Yes	Go to the next step.
4		No	Repair or replace the malfunctioning part according to the inspection results, then go to Step 8. (See UREA INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) (See UREA PUMP REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
5	INSPECT 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 the exhaust gas temperature sensor No.5 normal?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning part according to the inspection results, then go to Step 8. (See FUEL TEMPERATURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
6	INSPECT NOx SENSOR NO.1/NO.2 • Inspect the NOx sensor No.1/No.2. (See NOx SENSOR INSPECTION [SKYACTIV-D 2.2].) • Is the NOx sensor No.1/No.2 normal?	Yes	Go to the next step.
6		No	Repair or replace the malfunctioning part according to the inspection results, then go to Step 8. (See NOx SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
7	INSPECT A/F SENSOR • Inspect the A/F sensor. (See AIR FUEL RATIO (A/F) SENSOR INSPECTION [SKYACTIV-D 2.2].) • Is the A/F sensor normal?	Yes	Go to the next step.
7		No	Repair or replace the malfunctioning part according to the inspection results, then go to Step 8. (See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
8	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting.(Explain repair contents to customer)
8		No	Repeat the inspection from Step 1.