Inspection Procedure
NOTE:
- If different DTCs related to different systems that have terminal E2 as the ground terminal are output simultaneously, terminal E2 may be open.
- Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.
- CHECK POWER STEERING OIL PRESSURE SENSOR
- Connect the hand-held tester or the OBD II scan tool to the DLC3.
- Start the engine.
- Push the hand-held tester or the OBD II scan tool main switch ON.
- Select the item "DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / PS SIGNAL" and read its value displayed on the hand-held tester or the OBD II scan tool.
Result:
RESULTCondition Power Steering Oil Pressure Sensor Turning The Steering Wheel Until It Is Locked ON In An Idle OFF
- OK : CHECK FOR INTERMITTENT PROBLEMS (See CHECK FOR INTERMITTENT PROBLEMS )
- NG : Go to next step.
- CHECK HARNESS AND CONNECTOR (ECM - POWER STEERING OIL PRESSURE SENSOR)
- Disconnect the E3 and E4 ECM connector.
- Disconnect the P2 power steering oil pressure sensor connector.
- Measure the resistance between the wire harness side connectors.
Standard (Check for open):
STANDARD (CHECK FOR OPEN)Tester Connection Specified Condition VOUT (P2-2) - PSP (E4-29) Below 1 Ω VC (P2-3) - VC (E3-18) GND (P2-1) - E2 (E3-28) Standard (Check for short):
STANDARD (CHECK FOR SHORT)Tester Connection Specified Condition VOUT (P2-2) Or PSP (E4-29) - Body Ground 10 kΩ Or Higher VC (P2-3) - VC (E3-18) - Body Ground - Reconnect the power steering oil pressure sensor connector.
- Reconnect the ECM connector.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- NG : REPAIR OR REPLACE HARNESS OR CONNECTOR
- OK : REPLACE POWER STEERING OIL PRESSURE SENSOR