For Mexico

P0550 PSP SENSOR

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

1.Turn ignition switch OFF and wait at least 10 seconds.
2.Turn ignition switch ON.
3.Turn ignition switch OFF and wait at least 10 seconds.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

1.Start engine and let it idle for at least 5 seconds.
2.Check 1st trip DTC.
Is 1st trip DTC detected?
YES- Go to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK POWER STEERING PRESSURE SENSOR POWER SUPPLY CIRCUIT-I

1.Turn ignition switch OFF.
2.Disconnect power steering pressure (PSP) sensor harness connector.
3.Turn ignition switch ON.
4.Check the voltage between PSP sensor harness connector terminals.





Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 2.

2. CHECK POWER STEERING PRESSURE SENSOR POWER SUPPLY CIRCUIT-II

1.Check the voltage between PSP sensor harness connector and the ground.





Is inspection result normal?
YES- GO TO 4.
NO- GO TO 3.

3. CHECK SENSOR POWER SUPPLY CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check harness connector for short to power and short to ground, between the following terminals.





Is inspection result normal?
YES- Perform the trouble diagnosis for power supply circuit. Refer to "Diagnosis Procedure" For Mexico.
NO- Repair or replace error-detected parts.

4. CHECK PSP SENSOR GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check the continuity between PSP sensor harness connector and ECM harness connector.





4.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace error-detected parts.

5. CHECK ECM GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check the continuity between ECM harness connector and the ground.





Is inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace error-detected parts.

6. CHECK PSP SENSOR SIGNAL CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check the continuity between PSP sensor harness connector and ECM harness connector.





4.Also check harness for short to ground and to power.
Is the inspection result normal?
YES- GO TO 7.
NO- Repair or replace error-detected parts.

7. CHECK PSP SENSOR

Refer to "Component Inspection (Power Steering Pressure Sensor)" .
Is the inspection result normal?
YES- GO TO 8.
NO- Replace PSP sensor.

8. CHECK INTERMITTENT INCIDENT

Refer to "Intermittent Incident" Intermittent Incident.
- INSPECTION END


Component Inspection (Power Steering Pressure Sensor)


1. CHECK POWER STEERING PRESSURE SENSOR

1.Turn ignition switch OFF.
2.Reconnect all harness connectors disconnected.
3.Start engine and let it idle.
4.Check the voltage between ECM harness connector terminals under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace power steering pressure sensor.