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Inspection Procedure

Check power steering oil pressure sensor.

PREPARATION:

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".

CHECK:

Read signal displayed on the hand-held tester or the OBD II scan tool.

RESULT:

POWER STEERING OIL PRESSURE SENSOR CONDITION

Condition	Power steering oil pressure sensor
Turning the steering wheel until it is locked	ON
In an idle	OFF

OK: Check for intermittent problems (See PRE-CHECK ).

NG: Go to next step.

Check for open and short in harness and connector between ECM and power steering oil pressure sensor.
PREPARATION:
1. Disconnect the E6 and E7 ECM connectors.
2. Disconnect the P2 power steering oil pressure sensor connector.
CHECK:

Measure the resistance between the wire harness side connectors.

OK:

Fig 1: Disconnecting E6 And E7 ECM Connectors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard (Check for open):

Fig 2: Measuring Resistance Between Wire Harness Side Connectors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Specified Condition Table (Check For Open)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard (Check for short):

Fig 4: Specified Condition Table (Check For Short)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Repair or replace harness or connector.

OK: Replace power steering oil pressure sensor (See COMPONENTS ).