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 FOR CURRENT DTC
CAUTION: To reduce the possibility of damaging a new ECM, all other active diagnostic trouble codes must be investigated prior to replacing the ECM.
1. Turn ignition switch ON.
2. Connect CONSULT and check for existing "ENGINE" diagnostic trouble codes.
3. Check for DTC P24AE-00 being current or past on the CONSULT screen.
Is applicable DTC detected as current or past?

YES

GO TO 2

NO

Refer to Intermittent Incident .
CHECK DTC PRIORITY
Check for DTC U12A3-00, P0562-00 or P0563-00 being current or past on the CONSULT screen.

Is any of the applicable DTCs detected as current or past?

YES

Refer to DTC Index .

NO

GO TO 3
INSPECT THE PM SENSOR AND ELECTRICAL CONNECTOR PINS
1. Turn ignition switch OFF.
2. Disconnect the PM sensor.
3. Inspect connector 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.
- GO TO 9

CHECK THE PM SENSOR POWER SUPPLY AND GROUND CIRCUITS

Turn ignition switch ON.

Check the voltage between the PM sensor supply voltage and return circuit terminals.

PM sensor				Voltage (V) (Approx.)
Connector	Terminal (+)	Terminal (-)	Condition
C40	4	3	Key ON	Battery voltage
			Cranking engine
			Engine at idle

Is the inspection result within 1 volt of battery voltage?

YES

GO TO 5.

GO TO 7

CHECK FOR CORRECT PM SENSOR
1. Turn ignition switch OFF.
2. Verify after treatment particulate matter sensor is the correct sensor for the engine configuration.
Is the particulate matter sensor the correct sensor for the engine configuration?

YES

GO TO 6

NO
- An incorrect after treatment particulate matter sensor has been detected. Replace the PM sensor. Refer to Exploded View .
- GO TO 9
CHECK THE CIRCUIT RESPONSE
1. Turn ignition switch OFF.
2. Connect the PM sensor.
3. Turn ignition switch ON.
4. Connect CONSULT and check for current ENGINE diagnostic trouble codes.
Is DTC P24AE-00 current?

YES
- A malfunctioning after treatment particulate matter sensor has been detected. Replace the PM sensor. Refer to Exploded View .
- GO TO 9
NO
- The removal and installation of the connector corrected the malfunction.
- GO TO 9
CHECK THE MAIN HARNESS
1. Turn ignition switch OFF.
2. Check the battery connections.
Battery connections are tight and corrosion-free?

YES

GO TO 8 .

NO
- Tighten any loose connections and clean the terminals.
- GO TO 9

CHECK PM SENSOR BATTERY VOLTAGE SUPPLY

Turn ignition switch OFF.
Disconnect the PM sensor.
Turn ignition switch ON.

Check the voltage between the PM sensor supply voltage and engine block ground.

PM sensor

Voltage (V)

(Approx.)

Connector

Terminal (+)

Terminal (-)

C40

Engine block ground

Battery voltage

Is the inspection result within 1 volt of battery voltage?

YES

An open circuit has been detected in the after treatment particulate matter sensor module ground circuit. Repair or replace harness as necessary.
GO TO 9

An open circuit has been detected in the after treatment particulate matter sensor module ignition power circuit. Repair or replace harness as necessary.
GO TO 9

ERASE CURRENT DTCS
1. Turn ignition switch OFF.
2. Connect all harness connectors.
3. Turn ignition switch ON.
4. Using CONSULT, erase "ENGINE" diagnostic trouble codes.
5. Operate the engine within the "Conditions for Clearing DTC".
6. Using CONSULT, check for current "ENGINE" diagnostic trouble codes.
Is P24AE-00 DTC current?

YES

Return to Diagnosis Procedure. Refer to DTC Description .

NO

Repair complete.