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EC-336 < DTC/CIRCUIT DIAGNOSIS > [VQ35DE] P0550 PSP SENSOR Is the inspection result normal? YES >> GO TO 3. NO >> Repair open circuit, short to ground or short to power in harness or connectors. 3. CHECK PSP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 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 4. NO >> Repair open circuit, short to ground short to power in harness or connectors. 4. CHECK PSP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 1. Check the continuity between PSP sensor harness connector and ECM harness connector. 2. Also check harness for short to ground and short to 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. 5. CHECK PSP SENSOR EC-336, "Component Inspection" Is the inspection result normal? YES >> GO TO 6. NO >> Replace PSP sensor. 6. CHECK INTERMITTENT INCIDENT GI-39, "Intermittent Incident" >> INSPECTION END Component Inspection INFOID:0000000005536728 1. CHECK POWER STEERING PRESSURE SENSOR 1. Reconnect all harness connectors disconnected. 2. Start engine and let it idle. 3. Check the voltage between ECM terminals under the following conditions. Is the inspection result normal? PSP sensor ECM Continuity Connector Terminal Connector Terminal F62 1 F8 48 Existed PSP sensor ECM Continuity Connector Terminal Connector Terminal F62 2 F8 41 Existed ECM Condition Voltage Connector + – Terminal Terminal F8 41 (Power steering pressure sensor signal) 48 (Sensor ground) Steering wheel: Being turned. 0.5 - 4.5 V Steering wheel: Not being turned. 0.4 - 0.8 V |