Component Tests and General Diagnostics

Power Steering Pressure Test
1 Disconnect the battery ground cable.
For additional information, refer to Specifications Vehicle Jump Starting
2 Remove the air cleaner housing.
For additional information, refer to Air Cleaner Service and Repair

CAUTION: Discard fluid siphoned from the power steering system.
3 Siphon the fluid from the power steering reservoir.
4 Position an absorbent cloth to collect fluid spillage.





CAUTION: Before disconnecting or removing the components, make sure the area around the joint faces and connections are clean. Plug open connections to prevent contamination.

NOTE:
Some fluid spillage is inevitable during this operation.

NOTE:
Care must be taken to avoid contamination of the accessory drive belt.
5 Disconnect the power steering high-pressure pipe union.
Install the O-ring seal.
Install the special tools.
Special Service Tool




Adapter, Power Steering Pressure Test, 211-313

Special Service Tool




Hose, Power Steering Pressure Test, 211-011-02

Special Service Tool




Hose, Power Steering Pressure Test, 211-011-11

Special Service Tool




Valve Block, Power Steering Pressure Test, 211-011-01

Special Service Tool




Hose and Gauge, Power Steering Pressure Test, 211-287

Special Service Tool




Adapter, Power Steering Pressure Test, 211-325
Tie the pressure gauge aside under the hood.

CAUTION: Only use new fluid from a sealed container.
6 Refill and bleed the power steering.
For additional information, refer to Power Steering System Bleeding Service and Repair
7 Connect the battery ground cable.

NOTE:
Make sure the steering components and test equipment are free from leaks.

NOTE:
Maintain the maximum fluid level during the test.

NOTE:
Make sure the steering is in the straight ahead position.
With the test valve open start the engine.
Turn the steering fully lock-to-lock, stop the engine.
Top-up the power steering fluid reservoir.
8 For power steering pressures, refer to the steering specification section.
For additional information, refer to Specifications [1][2]Pressure, Vacuum and Temperature Specifications

CAUTION: Do not hold steering at full lock for longer than 10 seconds.
With the engine at idle, slowly turn the steering wheel and hold on full lock.
Record the pressure reading.
Repeat the above procedure for the other side.
Record the pressure reading.
9 With the engine at idle, release the steering wheel. The pressure should be, at or below, the pressure specified.

10 Pressure outside this tolerance, indicates a fault.

CAUTION: Pump damage will occur if the test valve is closed for longer periods.

11 To determine if the fault is in the steering pump or the steering rack, close the test valve for a maximum of 5 seconds.

12 If the pressures recorded fall outside the given values, replace the power steering pump.

13 If the maximum pump pressure is correct, then suspect the power steering rack.

CAUTION: Discard fluid siphoned from the power steering system.

14 On completion of the test stop the engine, disconnect the battery ground cable and siphon the fluid from the power steering reservoir.

15 Disassemble the test equipment.
Clean the component mating faces.
Install a new O-ring seal.
Connect the high-pressure pipe union to the power steering pump.
Torque to: 25 Nm

16 Install the air cleaner housing.
For additional information, refer to Air Cleaner Service and Repair

17 Connect the battery ground cable.
For additional information, refer to Specifications Vehicle Jump Starting

CAUTION: Only use new fluid from a sealed container.

18 Refill and bleed the power steering.
For additional information, refer to Power Steering System Bleeding Service and Repair