Diagnosis Procedure

Confirm the detected malfunction (A or B). Refer to "DTC LOGIC ".

Which malfunction is detected? 

A: GO TO 2.

B: GO TO  7.

Check DTC with combination meter. Refer to "CONSULT FUNCTION (METER/M&A) ".

Is the inspection result normal? 

YES: GO TO 3.

NO: Proceed to "COMPONENT FUNCTION CHECK ".

1. Turn ignition switch OFF.
2. Disconnect fuel level sensor unit and fuel pump harness connector.
3. Turn ignition switch ON.
4. Check the voltage between fuel level sensor unit and fuel pump harness connector and ground.

   Fuel level sensor unit and fuel pump		Ground	Voltage (V)
   Connector	Terminal
   B22	4	Ground	Approx. 5

   Is the inspection result normal? 

   YES: GO TO  5.

   NO: GO TO 4.

Check the following.

• Harness for open or short between ECM and fuel level sensor unit and fuel pump
• Loose or poor connection for each connector and harness

  : Repair open circuit, short to ground or short to power in harness or connector.

1. Turn ignition switch OFF.
2. Disconnect unified meter and A/C amp. harness connector.
3. Check the continuity between fuel level sensor unit and fuel pump harness connector and unified meter and A/C amp. harness connector.

   Fuel level sensor unit and fuel pump		Unified meter and A/C amp.		Continuity
   Connector	Terminal	Connector	Terminal
   B22	5	M67	58	Existed

4. Also check harness for short to ground and short to power.

   Is the inspection result normal? 

   YES: GO TO  7.

   NO: GO TO 6.

Check the following.

• Harness for open or short between fuel level sensor unit and fuel pump and unified meter and A/C amp.
• Loose or poor connection for each connector and harness

  : Repair open circuit, short to ground or short to power in harness or connector.

Check FTT sensor. Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 8.

NO: Replace fuel level sensor unit and fuel pump. Refer to "REMOVAL AND INSTALLATION ".

Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

: INSPECTION END