Diagnosis Procedure

1. Turn ignition switch ON.
2. Connect CONSULT and check for ENGINE diagnostic trouble codes.
3. Check for DTC U12A3-00 being current or past on the CONSULT screen.

Is DTC U12A3-00 detected as current or past?

YES

GO TO 2 .

NO

Refer to Intermittent Incident .

1. Turn ignition switch ON.
2. Using CONSULT, check for ENGINE diagnostic trouble codes.
3. Check for DTC U010E being current or past on more than 1 count on the CONSULT screen.

Is DTC U010E-00 detected as current or past?

YES

GO TO 9.

NO

GO TO 3 .

1. Using CONSULT, check for ENGINE diagnostic trouble codes.
2. Check for DTCs U029D-00, U029E-00, U02A2-00, U1611-00 or U1612-00 being current or past on the CONSULT screen.

Are more than one of the above DTCs current or past?

YES

GO TO 8.

NO

GO TO 4 .

1. Turn ignition switch OFF.
2. Disconnect particulate matter sensor harness connector C40.
3. Inspect the particulate matter sensor connector pins for the following:
   • Loose connector
   • Corroded pins
   • Bent or broken pins
   • Pushed back or expanded pins
   • Moisture in or on the connector
   • Missing or damaged connector seals
   • Dirt or debris on or in the connector pins
   • Connector shell broken
   • Wire insulation damage
   • Damaged connector locking tab.

Is the inspection result normal?

YES

GO TO 5 .

NO

• Repair or replace error-detected parts.
• GO TO 13

1. Turn ignition switch ON.
2. Check voltage between particulate matter sensor connector C40 terminal 4 and terminal 3.

   particulate matter sensor connector C40		Condition	Voltage (Approx.)
   Terminal (+)	Terminal (-)
   4	3	Ignition switch ON	> 10.8 V
   		Cranking engine
   		Engine running at idle

Is the inspection result normal?

YES

GO TO 7

NO

GO TO 6

1. Turn ignition switch ON.
2. Check voltage between particulate matter sensor connector C40 terminal 4 and ground.

   Intake NOx sensor		Ground	Condition	Voltage (Approx.)
   Connector	Terminal
   C40	4	(-)	Ignition switch ON	> 10.8 V
   			Cranking engine

Is the inspection result normal?

YES

• An open or high resistance is present on the ground circuit. Repair or replace error-detected parts.
• GO TO 13

NO

• An open or high resistance is present on the battery supply circuit. Repair or replace error-detected parts.
• GO TO 13

1. Turn ignition switch OFF.
2. Disconnect the particulate matter sensor harness connector C40.
3. Disconnect the data link adapter from the service data link connector harness connector.
4. Measure the resistance between particulate matter sensor harness connector C40 terminals 1 and 2.

   Particulate matter sensor connector C40		Resistance
   Terminal	Terminal
   1	2	54 - 66 Ω

Is the inspection result normal?

YES

• A malfunction has been detected in the after treatment particulate sensor. Replace particulate matter sensor. Refer to Removal and Installation .
• GO TO 13

NO

GO TO 9

1. Turn ignition switch OFF.
2. Inspect the IPDM E/R and fuses for the following:
   • Blown power supply fuses
   • Power supply fuse for cracks, burns, corrosion, or discolorations
   • Corrosion
   • Loose or expanded pins

Is the inspection result normal?

YES

GO TO 9

NO

• Repair or replace error-detected parts.
• GO TO 13

1. Turn ignition switch OFF.
2. Disconnect the data link adapter from the service data link connector harness connector.
3. Measure the resistance between Cummins data link connector F190 terminal 1 and terminal 2.

   Cummins data link connector F190		Resistance
   Terminal	Terminal
   1	2	54 - 66 Ω

Is the inspection result normal?

YES

GO TO 11

NO

GO TO 10

1. Turn ignition switch OFF.
2. Disconnect the data link adapter from the service data link connector harness connector.
3. Disconnect the ECM harness connector E93.
4. Disconnect particulate matter sensor harness connector C40.
5. Measure the resistance between particulate matter sensor connector C40 terminal 1 and terminal 2.

   Cummins data link connector F190		Resistance
   Terminal	Terminal
   1	2	108 - 132 Ω

Is the inspection result normal?

YES

1. A malfunction has been detected in the after treatment side of the CAN2 communication line circuit. Refer to Trouble Diagnosis Flow Chart .
2. GO TO 13

NO

1. A malfunction has been detected in the engine side of the CAN2 communication line circuit. Refer to Trouble Diagnosis Flow Chart .
2. GO TO 13

1. Turn ignition switch ON.
2. Check voltage between Cummins data link connector F190 terminal 1 and ground.

   Cummins data link connector		Ground	Voltage (Approx.)
   Connector	Terminal
   F190	1	(-)	0.1 - 4.5V

Is the inspection result normal?

YES

GO TO 12

NO

Repair or replace error-detected parts.

1. Turn ignition switch ON.
2. Check voltage between Cummins data link connector F190 terminal 2 and ground.

   Cummins data link connector		Ground	Voltage (Approx.)
   Connector	Terminal
   F190	2	(-)	0.1 - 4.5V

Is the inspection result normal?

YES

Refer to Intermittent Incident .

NO

Repair or replace error-detected parts.

1. Turn ignition switch OFF.
2. Connect all harness connectors.
3. Turn ignition switch ON.
4. Using CONSULT, select "ENGINE" and erase DTCs.
5. Operate the engine within the "Conditions for Clearing the DTC".

Is U12A3-00 DTC current?

YES

Diagnosis procedure needs to be repeated. Refer to DTC Description .

NO

Repair complete.