3000GT AWD V6-2972cc 3.0L DOHC Turbo (1991)
Power Steering Pressure Switch: Testing and Inspection
Power Steering Load Switch
Power Steering Pressure Switch Circuit
To test the Power Steering Switch, located on the P/S pump, proceed as follows.
COMPONENT TEST
1. Start the engine and warm to operating temperature.
2. Disconnect the power steering load switch (on the P/S pump).
3. Using an ohm meter check for continuity between the switch terminal and ground.
Continuity
Should not exist when the steering wheel is stationary.
Continuity
Should exist when the steering wheel is being turned.
HARNESS TEST
1. Disconnect the power steering pressure sensor connector and turn the key to the ON position.
2. Using a voltmeter, check the voltage between switch harness terminal 1 and ground.
Voltage:
System voltage.
3. Turn the key to the OFF position, disconnect the negative battery cable and the ECU connector.
4. Using an ohm meter, check for continuity between ECU harness connector terminal 107 and switch harness connector terminal 1.
Continuity
Should exist.
5. Using an ohm meter, check for continuity between ECU harness connector terminal 5 and ground.
Continuity
Should not exist.
