Hi Everyone, I'm sure this is yet another post on HICAS. I have had one heck of a time trying to research and figure out all of the parts in the HICAS system that can cause it not to work in an R32 GTR (not SuperHICAS).

So I thought I would post what I have found so far and see if anyone would like to add to it or help me edit where I am off.

First, I thought I'd begin with one of the better diagrams of the HICAS system that I have come across. I'd also like to list the error codes, as well as the components of the HICAS system with Nissan part numbers, including Nissan FAST Section number, and location on the car.

So without further delay, here we go... And as always, I appreciate all feedback.

HICAS Error Codes:

1. HICAS Solenoid R.H.
2. HICAS Solenoid L.H.
3. Fail Safe
4. Constantly normal mode
5. Vehicle Speed Sensor (HICAS PIN 8)
6. Steering Angle Sensor
7. Steering Neutral Position Sensor
8. M/T Clutch Sensor
9. M/T Neutral Sensor


Part Information:

FAST SECTION DESCRIPTION PART NO (LOCATION)
(490) PUMP ASSEMBLY, POWER STEERING 49110-04U01 (Motor)
(497) VALVE ASSEMBLY, PRESSURE CONTROL - 49836-01U00 (Engine Compartment - Driver Side Frame Rail)
(253) SENSOR ASSEMBLY, STEERING - 28475-01U11 (Steering Column)
(253) CONTROL ASSEMBLY, HICAS - 28505-04U55 (Computer under trunk deck)
(431) VALVE ASSEMBLY, CUT OFF - 55780-05U00 (Above Rear Axle)
(321) NEUTRAL POSITION SWITCH - 32006-31G01 (Back of Transmission)

The R32 GTR service manual starting at page 568 covers the whole steering system: https://www.plmsdevelopments.com/files/ ... manual.pdf