Hello,

 

My steering has started playing up this morning

 

The first 60 degrees of steering in either direction are fine and smooth but beyond that the steering goes really heavy and fails to return to the neutral position.

 

Any ideas?

 

Thank you

Pete

Firstly, have you got enough fluid in the power steering pump res?

 

Secondly, how is your speedo? Reading ok? Zeds have speed sensitive steering as apart of the HICAS. Run a HICAS Diagnostic and check if you have any codes

 

Procedure:

 

1. Ignition switch 'off' manual in neutral or A/T in 'P'

 

2. Start the engine

 

3. Within 10 seconds after turning the key to 'ON', start the engine, turn steering wheel from left to right 20 degrees from neutral 5 times or more times & pump the brakes 5 times. Then press the brake pedal again to enter the test mode.

 

4. Turning the steering wheel left or right past 20 degrees from neutral will cause the rear wheels to turn slightly (~1 degree) (1.).

 

5. Drive the car forward 15 feet under 9mph to enter the full diagnostic mode.

 

6. The HICAS dash light will flash a code indicating any problems. Long flash is first digit, short flash is 2nd digit.

 

7. Diagnostic mode is exited when: ignition is turned off, vehicle speed exceeds 9mph, or diagnostic has operated for 5 minutes.

 

HICAS light codes for '90-'93:

 

1. HICAS solenoid R.H.

2. HICAS solenoid L.H.

3. Cut-off valve

4. Power Steering solenoid

5. Vehicle Speed sensor

6. Steering angle sensor

7. Steering Neutral positon sensor

8. A/T: Parking Brake Sensor M/T: Clutch sensor

9. A/T: Inhibitor sensor M/T: Neutral sensor

 

HICAS light codes for '94-'99:

 

11. HICAS control unit

12. HICAS motor power supply not present

13. HICAS motor output not present

21. Vehicle speed signal not present

22. Steering angle sensor angle signal not present

23. Steering angle sensor neutral not present

24. Rear main sensor input not present

25. Rear sub sensor input not present

31. Parking brake sensor input not present

32. Inhibitor switch (A/T) or nuetral switch (M/T) input not present

33. Engine speed signal not present

Thanks for the reply

 

The fluid is fine and the hicas and hicas pump have been removed

Thanks for the reply

 

The fluid is fine and the hicas and hicas pump have been removed

 

From what i have read a failing speed sensor on the gearbox is the most common cause of faults.

From what i have read a failing speed sensor on the gearbox is the most common cause of faults.

 

agreed...

 

check the connections first... might be corroded (best case scenario...lol)

where would i find the speed sensor connector.

The HICAS diagnostic will show up a code for the speed sensor (aswell as the bits youve removed)