Diagnosis Procedure

1. Turn ignition switch ON.
2. Connect CONSULT and check for other existing ENGINE diagnostic trouble codes.
3. If any air injection related DTC exists, perform the confirmation procedure (diagnosis procedure) for other DTC:

• Engine Position related DTC
• Charge Air Cooler Outlet Temperature/Pressure related DTC

Is applicable DTC detected?

YES

Perform diagnosis of applicable DTC. Refer to DTC Index .

NO

GO TO 2 .

Check mass air flow sensor. Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 3 .

NO

Replace mass air flow sensor. Refer to Removal and Installation .

1. Turn ignition switch OFF.
2. Disconnect mass air flow sensor from engine harness connector.
3. Remove the mass air flow sensor from its mounting location.
4. Inspect the mass air flow sensor body and heated wire measuring components 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.

1. Reinstall mass air flow sensor.
2. Check for an air intake leak between the air box and the intake manifold.
   • Check all clamps and connectors for tightness.
   • Check for disconnected or damaged air pipes.
   • Perform a pressurized leak test of the system, if possible.

Was any leak found in the air intake system?

YES

Repair or replace leaking component(s).

NO

GO TO 5 .

Check the intake air filter for excessive buildup and restriction.

• Check the filter restriction monitor gauge, if equipped.
• Remove filter, if necessary, and inspect for excessive debris buildup or filter media damage.
• Insure the air filter was installed properly.

Is the inspection result normal?

YES

GO TO 6 ..

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 P0104-00 DTC current?

YES

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

NO

Repair complete.