DTC Diagnosis Procedure
- CHECK POWER STEERING PRESSURE SENSOR POWER SUPPLY CIRCUIT-I
- Turn ignition switch OFF.
- Disconnect power steering pressure (PSP) sensor harness connector.
- Turn ignition switch ON.
- Check the voltage between PSP sensor harness connector terminals.
PSP sensor
Voltage
(Approx.)
Connector
+
-
terminal
F82
3
1
5 V
Is the inspection result normal?
YES
GO TO 6.
NO
GO TO 2.
- CHECK POWER STEERING PRESSURE SENSOR POWER SUPPLY CIRCUIT-II
- Check the voltage between PSP sensor harness connector and the ground.
+
-
Voltage
(Approx.)
PSP sensor
Connector
terminal
F82
3
Ground
5 V
Is inspection result normal?
YES
GO TO 4.
NO
GO TO 3.
- Check the voltage between PSP sensor harness connector and the ground.
- CHECK SENSOR POWER SUPPLY 3 CIRCUIT
Perform Diagnosis Procedure .
Is inspection result normal?
YES
Perform the trouble diagnosis for power supply circuit. Refer to DTC Diagnosis Procedure .
NO
Repair or replace error-detected parts.
- CHECK PSP SENSOR GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between PSP sensor harness connector and ECM harness connector.
+
-
Continuity
PSP sensor
ECM
Connector
Terminal
Connector
Terminal
F82
1
F78
13
Existed
- 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.
- CHECK ECM GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between ECM harness connector and the ground.
+
-
Continuity
ECM
Connector
Terminal
E77
147
Ground
Existed
149
152
Is inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
Repair or replace error-detected parts.
- CHECK PSP SENSOR SIGNAL CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between PSP sensor harness connector and ECM harness connector.
+
-
Continuity
PSP sensor
ECM
Connector
Terminal
Connector
Terminal
F82
2
F78
24
Existed
- 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.
- CHECK PSP SENSOR
Refer to Component Inspection (Power Steering Pressure Sensor) .
Is the inspection result normal?
YES
GO TO 8.
NO
Replace PSP sensor.
- CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident .
INSPECTION END