gtr r32 relay problem?

[wyld1300]

g'day all

i have an r32 gtr an the whole time iv owned it the relay in the boot, between the tail lights has made a clicking sound every say... 10 seconds. When it clicks it must draw current as all the lights dimer for a second. I have had a couple of people tell me there' does it too.......

Any one now What the hell it is ????

[GTRsean]

It's normal. I have the dealer service manual on CDROM and have read about the funky little systems our GTR's.

The relay(S) you are talking about switch the HICAS 4WD pressure pump on and off. It usually switches in for 1/4 sec every 30 sec or so. Think it tests the pump and solenoid valve and primes itself. (hicas pump is located on top of rear diff).

If you disconnect the relay the pump will not operate and the 4WD light will stay on in the dash until you reconnect it and start engine again.

Hope that helps.

[lwells]

Sean,

Can you post up the relevant section from the service manual?

The relay in my boot is making an very loud clicking noise and causes the voltage meter to bump and lights to dim momentarily every five or so seconds.

Lucien.

[GTRsean]

Sean,

Can you post up the relevant section from the service manual?  

The relay in my boot is making an very loud clicking noise and causes the voltage meter to bump and lights to dim momentarily every five or so seconds.

Lucien.

I'll see what I can do. Does your 4wd light come on the dash. If it does theres a fault. My lights used to dim when it went of too but changing the batter fixed it cos it was stuffed on mine.

[lwells]

I'll see what I can do.  Does your 4wd light come on the dash.  If it does theres a fault.  My lights used to dim when it went of too but changing the batter fixed it cos it was stuffed on mine.

No, the 4WD warning light stays off unless I pull the wires out of the relay

Cheers,

Lucien.

[GTRsean]

No, the 4WD warning light stays off unless I pull the wires out of the relay

Cheers,

Lucien.

My lights and instruments didn"t dim once I changed the battery as well. So it could be that your bat could be on the way out or it doesn't have enough capacity?

[lwells]

Hi Sean,

The battery is only a couple of months old, so its doubtful. Its possible that a higher capacity battery wouldn't experience a dip in voltage, but its not really a major issue and only really noticeable at idle.

I have done some more research and it seems that this is not an uncommon "problem". Its just a noisy (but working) relay. If I have time, I might play around with better earthing the relay.

Lucien.