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Attesa E-Ts Issue

vito_96
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vito_96 Contributor

vito_96

Posted
Posted

Morning Everyone [/size]

I was just wondering if any one can guide me on this issue I am having with my awd system on my r32 gts4. [/size]


When I bought the car the awd system never worked and last night I thought I start playing doctor and see what is causing this system not to work. [/size]

So Symptoms [/size]

1. When you turn the key on no AWD or Hicas lights come on, [/size]
2. Checked 10A fuse under Dash, Fuse is good ( Continuity ) but once u plug it in there is no power or Continuity. [/size]
3. Ecu no red light on & no wires cut [/size]
4. Fuse under hood ( anti-skid 30am) no continuity or power when key is turned on [/size]
5. Relay in the truck next to the latch has power but no continuity [/size]
6. I bypassed the Relay, pump comes on but if you hold it there for a while it makes a nasty noise... [/size]sad.gif
7. There is fluid in Tank located in the truck [/size]


I found a Attesa ECU wiring Diagram and will be working on it tonight, with searching I found that pin 42 sometimes need to be grounded. [/size]

http://www.skylinesaustralia.com/for...ems-need-help/

This video Helped a lot. [/size]

[/size]

I need to Test the power wire to ECU and trace the wire from fuse box under dash to its power and ground, but if any one has had this issue it be great help save me some time and money. [/size]

Cheers [/size]


Rob[/size]
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GTSBoy Grand Master

GTSBoy

Posted
Posted

What do you mean by "has power but no continuity"? Does that mean that there's power on one side of the fuse but not the other? Does that mean that there's power on both sides of the fuse but the wire that goes out to the circuit appears to be broken?

If I inherited a problem like this, I would tend towards the assumption that something mechanical in the AWD system died and the owner took the simple bodgy approach of disconnecting the electrics to it rather than fix it.

blind_elk Grand Master

blind_elk

Posted
Posted

1. When you turn the key on no AWD or Hicas lights come on

Have you checked the globes? The lights should come on when the key is turned to "ON" (before "START") - its a check that the globes are working. Otherwise, if the lights come on while the engine is running, it means there is an error in the HICAS &/or ATTESA.

vito_96 Contributor

vito_96

Posted
  • Author
Posted

What do you mean by "has power but no continuity"? Does that mean that there's power on one side of the fuse but not the other? Does that mean that there's power on both sides of the fuse but the wire that goes out to the circuit appears to be broken? If I inherited a problem like this, I would tend towards the assumption that something mechanical in the AWD system died and the owner took the simple bodgy approach of disconnecting the electrics to it rather than fix it.

The fuse box under the hood does only have power on one side and no continuity, i did find a plug that is unplugged that connects to the fuse box under the hood, but there is nothing to plug it in to... its attached to wire that goes in the strut tower.

yes i aggree that something was wrong with the awd system and he disconnected it electronically, because there is no power going to the ECU but there is power to the relay in the truck

Have you checked the globes? The lights should come on when the key is turned to "ON" (before "START") - its a check that the globes are working. Otherwise, if the lights come on while the engine is running, it means there is an error in the HICAS &/or ATTESA.

no there is no lights that come on the dash, only ebrake and seat belt i think are the only ones,

vito_96 Contributor

vito_96

Posted
  • Author
Posted

I was looking for the Ignition wire to Fuse box to see if that has been cut because the circuit is not complete when the ignition is on. I just dont understand how there is power to the relay in the truck. I got a wiring diagram but doesnt help much i need to find it in the car

blind_elk Grand Master

blind_elk

Posted
Posted

I was looking for the Ignition wire to Fuse box to see if that has been cut because the circuit is not complete when the ignition is on. I just dont understand how there is power to the relay in the truck. I got a wiring diagram but doesnt help much i need to find it in the car

Don't you mean "trunk"?

vito_96 Contributor

vito_96

Posted
  • Author
Posted

Don't you mean "trunk"?

Yes... My bad

In the boot. Just left of the boot lid catch, there are two relays. The bigger one on the left is the 4WD relay.

ya the big one if i bypass the red and yellow wires i hear the pump come on but there is no power to ecu. I did find a plug unplugged that is connected to the ABS wire... doesnt seem like there is anything that connects to it because there is nothing in the area.

Also

I do not have ABS.

can anyone show me what dash lights are suppose to come on in a gts-4 Please

blind_elk Grand Master

blind_elk

Posted
Posted

Can't seem to post a pic, but lights as follows:

left side:

Anti-Lock HICAS

Handbrake Battery

and right side:

Oil

4WD

I believe you must have ABS, because ATTESA uses the ABS wheel sensors to detect slip.

vito_96 Contributor

vito_96

Posted
  • Author
Posted

Can't seem to post a pic, but lights as follows:

left side:

Anti-Lock HICAS

Handbrake Battery

and right side:

Oil

4WD

I believe you must have ABS, because ATTESA uses the ABS wheel sensors to detect slip.

So I am stumped right now I have taken the driver kick panel off and its nothing but wires for the compustar car alarm. Its like a rats nest.

Is there any way that you can cut power to awd and abs.

The 4wd fuse is good both under hood and under dash.

I don't want to touch those wires cuz I am not suee whey they go.

  • 2 months later...

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