SVX Power Steering Systems on Early Subarus Part 4:
Test SVX Power Steering Connectors
The system has three diagnostic modes:
• D-Check
• Read Memory
• Clear Memory
The trouble codes are displayed by the STEERING light.
To access the D-Check mode:
• Connect a ground wire to the test mode connector terminal #5, then start the engine.
• Move the vehicle at least 31 feet and then remove the ground wire from terminal #5.
• Read the codes emitted by the steering system warning lamp.
To access Read Memory:
• Connect the ground wire to test mode connector terminal #6.
• Start the engine and then remove the ground wire from terminal #6.
• Read the codes emitted by the steering system warning lamp.
To Clear Memory:
• Turn the ignition switch off.
• Connect a jumper wire to terminal #5 and #6.
• Start the engine and remove the jumper wire from terminal #5 and #6. Confirm that the memory is clear.
SVX Power Steering Trouble Codes
The diagnostic trouble codes are:
1 = Reaction solenoid circuit: shorted
2 = Reaction solenoid circuit: open
3 = Vehicle speed sensor fault
4 = Memory back-up circuit fault
5 = Engine speed signal fault
Constant Flashing = System okay.
Note: Always refer to the appropriate model year service manual Section 4-3 troubleshooting procedure section when performing self diagnosis.
Notes and Cautions:
SVX Power Steering Column Removal
Always refer to the appropriate model year Subaru Service Manual and follow the procedure for removal of the SRS “Airbag” Module prior to any repair and servicing or removal of the steering wheel and steering column from all airbag equipped Subaru vehicles.
Always disconnect the U-bolts before loosening the column mounting bolts. Disconnect the wiring harness connectors before removing the column. Remove the XT column carefully to avoid damaging the meter and instrument panel.
SVX Power Steering Gearbox Overhaul:
• Do not crimp the pipes.
• Do not scratch the rack or the cylinder.
• Do not clog the air passages with grease.
• Coat the seal and bushings with ATF fluid before installing them.
• Install the seals with their lips toward the pressure area.
• Use the correct special tools.
Airbag Steering Column Installation
Review the roll connector phasing procedures listed in the appropriate model year service manual, Section 4-3. The roll connector must be phased to the steering system only when the front wheels are centered. Align the inner “center” indicator on the rotating cover (next to window) with the arrow on the connector case.
Complete the following alignment adjustments when the inner indicator in the window shows:
• 1R – rotate cover one full rotation to the right
• 2R – rotate cover two rotations to the right
• 1L – rotate cover one full rotation to the left
• 2L – rotate cover two rotations to the left Use the guide pins to align the roll connector with the steering wheel.
The SVX power steering rack tie-rod dust boots require special servicing procedures because the rack tie-rod dust boots are one time use only. Cut the small end of boot to remove the boot. Always replace the boot if removed. The boot uses a wire tie on the large end of the boot.
The left side (pinion side) tie rod has a groove next to the boot clamp groove. The right side does not have a groove.