Diagnosis Procedure

1. Turn ignition switch OFF.
2. Check ground connection M95. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 2.

NO: Repair or replace ground connection.

1. Disconnect MAP sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between MAP sensor harness connector and ground.
   TERMINALS VOLTAGE REFERENCE
   
   

   MAP sensor		Ground	Voltage
   Connector	Terminal
   F50	1	Ground	Approx. 5V

Is the inspection result normal? 

YES: GO TO 3.

NO: Repair open circuit or short to ground or short to power in harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between MAP sensor harness connector and ECM harness connector.
   TERMINALS CONTINUITY REFERENCE
   
   

   MAP sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   F50	3	F102	96	Existed

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

Is the inspection result normal? 

YES: GO TO 4.

NO: Repair open circuit or short to ground or short to power in harness or connectors.

1. Check the continuity between MAP sensor harness connector and ECM harness connector.
   TERMINALS CONTINUITY REFERENCE
   
   

   MAP sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   F50	2	F101	38	Existed

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

Is the inspection result normal? 

YES: GO TO 5.

NO: Repair open circuit or short to ground or short to power in harness or connectors.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 6.

NO: Replace MAP sensor.

Refer to "INTERMITTENT INCIDENT ".

INSPECTION END