Diagnosis Procedure
- CHECK GROUND CONNECTION
- Turn ignition switch OFF.
- 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.
- CHECK MAP SENSOR POWER SUPPLY CIRCUIT
- Disconnect manifold absolute pressure (MAP) sensor harness connector.
- Turn ignition switch ON.
- Check the voltage between MAP sensor harness connector and ground.
MAP sensor Ground Voltage (V) Connector Terminal F50 1 Ground Approx. 5 Is the inspection result normal?
YES: GO TO 3.
NO: Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK MAP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between MAP sensor harness connector and ECM harness connector.
MAP sensor ECM Continuity Connector Terminal Connector Terminal F50 3 F102 96 Existed - Also check harness for short to ground and power.
Is the inspection result normal?
YES: GO TO 4.
NO: Repair open circuit, short to ground or short to power in harness or connectors.
- CHECK MAP SENSOR INTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
- Check the continuity between MAP sensor harness connector and ECM harness connector.
MAP sensor ECM Continuity Connector Terminal Connector Terminal F50 2 F101 38 Existed - Also check harness for short to ground and power.
Is the inspection result normal?
YES: GO TO 5.
NO: Repair open circuit, short to ground or short to power in harness or connectors.
- Check the continuity between MAP sensor harness connector and ECM harness connector.
- CHECK MAP SENSOR
Refer to "COMPONENT INSPECTION ".
Is the inspection result normal?
YES: GO TO 6.
NO: Replace MAP sensor.
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
: INSPECTION END