The power steering system increases steering performance and improves steering feel and power-saving effectiveness. The power steering pressure sensor detects the power steering load and converts it into a voltage signal to the PCM. The PCM then controls the idle speed control motor by using the voltage signal from the power steering pressure sensor.
Checking output signals from P/S PS(power steering pressure sensor). under detecting condition, if an signal below 0.1V lasts for over failure limit. PCM sets P0552. MIL(Malfunction Indication Lamp) turns on when the malfunction lasts till cosecutive 2 driving cycle.
Item
Detecting Condition
Possible cause
DTC Strategy
? Detects sensor signal short to low voltage
? Poor connection
? Open in power circuit
? Open or short to ground in signal circuit
? Faulty P/S pressure sensor
? Faulty PCM
Enable Conditions
? Engine works
? 11V = Battery voltage = 16V
Threshold value
? Sensor output voltage< 0.1V
Diagnosis Time
? Continuous
MIL On Condition
? 2 driving cycles
Pressure(Kgf/cm²)
37.9
41.3
68.8
96.4
Voltage(V)
1
2
3
4