Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC PRIORITY
1. Turn ignition switch ON.
2. Connect CONSULT and check for ENGINE diagnostic trouble codes.
3. Check for DTC U010E-00 being current on the CONSULT screen.
Is DTC U010E-00 detected as current?

YES

GO TO 2 .

NO

Refer to Intermittent Incident .
CHECK DTC PRIORITY
Check for all the following DTCs being current on the CONSULT screen.

Are DTCs U0106-00, U010C-00, U029D-00, U02A2-00, U1611-00, and U1612-00 all detected as current?

YES

GO TO 8 .

NO

GO TO 3 .
INSPECT DEF CONTROL MODULE AND HARNESS CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect DEF control module harness connector C35.
3. Inspect the DEF control module 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 4 .

NO

Repair or replace error-detected parts.

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch ON.

Check voltage between DEF control module connector C35 terminals 3 and 7.

DEF control module connector C35		Condition	Voltage (Approx.)
Terminal (+)	Terminal (-)
3	7	Ignition switch ON	> 10.8 V
		Cranking engine

Is the inspection result normal?

YES

GO TO 6.

GO TO 5.

CHECK FOR OPEN CIRCUIT

Check voltage between DEF control module harness connector C35 terminal 3 and ground.

DEF control module		Ground	Condition	Voltage (Approx.)
Connector	Terminal
C35	3	-	Ignition switch ON	> 10.8 V
			Cranking engine

Is the inspection result normal?

YES

An open or high resistance is present in the DEF control module ground circuit. Repair or replace error-detected parts.

An open or high resistance is present in the DEF control module supply circuit. Repair or replace error-detected parts.

CHECK DEF CONTROL MODULE TERMINATING RESISTANCE
CAUTION:
When probing or jumping between connector pins or terminals:
- Always use extreme care or connector damage could result. Do not bend or damage connector pins and terminals. Damaged connectors, pins or terminals could result in additional issues or difficult-to-diagnose intermittent incidents.
- Do not probe or short unintended circuits or component and/or control module damage could result.
Measure the resistance between pin 5 and pin 6 of the DEF control module.

Is the resistance between 105 -132 Ω

YES

GO TO 7 .

NO

Replace DEF control module. Refer to Removal and Installation .

CHECK ROTARY TURBINE CONTROL VALVE ACTUATOR TERMINATING RESISTANCE

Turn ignition switch OFF.
Disconnect the data link adapter from the service data link connector harness connector.

Measure the resistance between DEF control module harness connector C35 terminals 5 and 6.

DEF control module connector C35		Resistance
Terminal	Terminal	Resistance
5	6	105 -132 Ω

Is the inspection result normal?

YES

GO TO 12.

GO TO 9.

INSPECT IPDM E/R AND FUSES
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.
INSPECT ROTARY TURBINE CONTROL VALVE ACTUATOR AND HARNESS CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect the rotary turbine control valve actuator harness connector F146.
3. Inspect the rotary turbine control valve actuator 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 10 .

NO

Repair or replace error-detected parts.

CHECK CAN 2 COMMUNICATION LINE (+) FOR OPEN

Disconnect cover off the CAN 2 communication lines connector F107.

Measure the resistance between rotary turbine control valve actuator connector F146 terminal 3, DEF control module connector C35 terminal 5, and CAN 2 communication lines connector F107 terminal 1.

Rotary Turbine Control Valve

Connector F146

DEF control Module

Connector C35

CAN 2 Communication Lines

Connector F107

Resistance

Terminal

< 10Ω

Is the inspection result normal?

YES

GO TO 11.

An open circuit has been found in the CAN 2 (+) communication line circuit. Repair or replace error-detected parts.

CHECK CAN 2 COMMUNICATION LINE (-) FOR OPEN

Measure the resistance between rotary turbine control valve actuator connector F146 terminal 2, DEF control module connector C35 terminal 6, and CAN 2 communication lines connector F107 terminal 2.

Rotary Turbine Control Valve

Connector F146

DEF control Module

Connector C35

CAN 2 Communication Lines

Connector F107

Resistance

Terminal

< 10Ω

Is the inspection result normal?

YES

A concern has been found in the after treatment side of the CAN 2 communication line circuit. Repair or replace error-detected parts.

An open circuit has been found in the CAN 2 (-) communication line circuit. Repair or replace error-detected parts.

CHECK CAN 2 COMMUNICATION LINE (+) FOR SHORT

Reconnect all previously disconnected components.
Turn ignition switch ON.

Check voltage between CAN 2 data link connector F107 terminal 1 and ground.

CAN 2 data link connector

Ground

Voltage

(Approx.)

Connector

Terminal

F107

0.1 - 4.5V

Is the inspection result normal?

YES

GO TO 13.

A short circuit has been found in the CAN 2 communication line circuit. Repair or replace error-detected parts.

CHECK CAN 2 COMMUNICATION LINE (-) FOR SHORT

Check voltage between CAN 2 data link connector F190 terminal 2 and ground.

CAN 2 data link connector

Ground

Voltage

(Approx.)

Connector

Terminal

F107

0.1 - 4.5V

Is the inspection result normal?

YES

Refer to Intermittent Incident .

A short circuit has been found in the CAN 2 communication line circuit. Repair or replace error-detected parts.