P0550

DTC P0550 PSP SENSOR




Component Description
Power steering pressure (PSP) sensor is installed to the power steering high-pressure tube and detects a power steering load. This sensor is a potentiometer which transforms the power steering load into output voltage, and emits the voltage signal to the ECM. The ECM controls the electric throttle control actuator and adjusts the throttle valve opening angle to increase the engine speed and adjusts the idle speed for the increased load.




CONSULT-II Reference Value in Data Monitor Mode




On Board Diagnosis Logic

NOTE: If DTC P0550 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229. Refer to "DTC P1229 SENSOR POWER SUPPLY". P1229

DTC Confirmation Procedure

NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

WITH CONSULT-II
1. Turn ignition switch ON.




2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for at least 5 seconds.
4. If 1st trip DTC is detected, go to "Diagnostic Procedure" below.

WITH GST
Follow the procedure "WITH CONSULT-II" above.

EC-PS/SEN-01:

Wiring Diagram

Diagnostic Procedure

Diagnostic Procedure (Step 1):

Diagnostic Procedure (Steps 2 - 5):

Diagnostic Procedure (Step 6):

Component Inspection

POWER STEERING PRESSURE SENSOR
1. Reconnect all harness connectors disconnected.
2. Start engine and let it idle.




3. Check voltage between ECM terminal 12 and ground under the given conditions.