Noise from passenger side - ATP related?

[jims-terrano]

Is there anything in a MOT test that if done incorrectly could cause any damage to these trucks? especially if someone has pressed,pulled, forced levers they shouldn't. Rolling roads etc. Do not know how things are tested, should though my father is a mechanic.

Maybe not but did the truck need any work doing to pass the test? Could the mechanic of knocked something and accidentally caused this.

 

[zephyr]

Thank you - and Merry Christmas to you all.

I can't say if MOT did something to cause this issue as this happened after a week Terrano went through MOT. There might be a possibility for it but nothing concrete evidence is there, I feel.

Rick, I think what you mentioned is right, even though if I try to replace this relay, it wouldn't solve - I would try it anyway. In the mean time I was looking for the garage as I don't think I can get into the transfer box to see the connection problem which is causing this issue....

 

[Banshee]

Thank you - and Merry Christmas to you all.

I can't say if MOT did something to cause this issue as this happened after a week Terrano went through MOT. There might be a possibility for it but nothing concrete evidence is there, I feel.

Rick, I think what you mentioned is right, even though if I try to replace this relay, it wouldn't solve - I would try it anyway. In the mean time I was looking for the garage as I don't think I can get into the transfer box to see the connection problem which is causing this issue....

Merry Xmas mate, hope you've had a good one

I'd just get under the truck in some scruffy clothes mate and keep an eye on the transfer lever while someone is in the truck pushing it in the same way that you were to stop the noise and see what you can see.

I think your relay is likely to be fine and the noise it's making is being caused by another factor somewhere near the transfer lever itself

 

[solarman216]

Rick, I think what you mentioned is right, even though if I try to replace this relay, it wouldn't solve - I would try it anyway. In the mean time I was looking for the garage as I don't think I can get into the transfer box to see the connection problem which is causing this issue....

All the switches are screwed in from the outside of the gear box and transfer box all with plugs and sockets so these are what you need to check, Rick

 

[zephyr]

All the switches are screwed in from the outside of the gear box and transfer box all with plugs and sockets so these are what you need to check, Rick

Thank you, Rick. I'll check as much as I can:thumb2 Hope this is an easy fix.

 

[zephyr]

So I got this part bought off from eBay to see if this relay is working without problem;

Ok, actually it's working - making a same noise (as Rick has already mentioned) which I thought would be the case, but good to know this relay is working ok.

Now, when I disconnect this relay from the cable,

this annoying noise stopped, ATP light is off - as I drive only in 2WD, do you think if I can leave it disconnected for a while? The problem is I'm not sure exact impact if this relay wasn't connected. Any way for me to find out or do you know?

 

[Banshee]

So I got this part bought off from eBay to see if this relay is working without problem;

Ok, actually it's working - making a same noise (as Rick has already mentioned) which I thought would be the case, but good to know this relay is working ok.

Now, when I disconnect this relay from the cable,

this annoying noise stopped, ATP light is off - as I drive only in 2WD, do you think if I can leave it disconnected for a while? The problem is I'm not sure exact impact if this relay wasn't connected. Any way for me to find out or do you know?

Check the nearest earth points and make sure there's no corrosion there, have you checked underneath yet when someone moves the transfer lever like you did in the video, see if any wiring etc is being moved whilst that action is being performed?

 

[macabethiel]

Thinking outside the box and blue sky thinking etc ?

The ATP light I suspect informs you that the Park Position is not working as it should possibly due to some downstream issue in the transfer box or in the electrical connections that on my motor would light up the four wheel drive picture on the dash display so there will be position switches on the transfer box.

When the relay is disconnected you might find that when you leave the vehicle in park it will not hold on a hill when the handbrake is not on. If the Park Position still works then that would make me think it's just an electrical problem in the wiring or with the position switching mechanisms.

Have you had any exhaust system work done to the vehicle recently whereby the wiring has been damaged or burnt if there is a loom near the back of the bulkhead?

Might sound crazy but have you checked stuff like the ATF level and the Park Switch situated on the gear shift lever mechanism in the center consul. There are all manner of interconnects on these systems.

On my Terrano r3mR I lost the use of the overdrive switch due to a snagged wire in the gearshift mechanism. I basically re-wired the overdrive switch between the gear lever and the switch wiring loom. It took some doing getting a fine flexible wire down the gearshift tube. I ended up using some wiring for a turntable arm for this as it was nice and thin and would take the moving action when moving the gear lever. It was when I was fixing this that are saw all the various bits of wiring involved in the gear selector systems including the Hi & Lo positions as well as the 2 & 4 WD switches.

Just trying to think what might have caused the problem.

 

[zephyr]

Check the nearest earth points and make sure there's no corrosion there, have you checked underneath yet when someone moves the transfer lever like you did in the video, see if any wiring etc is being moved whilst that action is being performed?

Hi Banshee, I have checked the earth point which looked ok (just above the relay), but haven't been able to check underneath as I haven't got a buddy right now to do this:doh

 

[zephyr]

The ATP light I suspect informs you that the Park Position is not working as it should possibly due to some downstream issue in the transfer box or in the electrical connections that on my motor would light up the four wheel drive picture on the dash display so there will be position switches on the transfer box.

When the relay is disconnected you might find that when you leave the vehicle in park it will not hold on a hill when the handbrake is not on. If the Park Position still works then that would make me think it's just an electrical problem in the wiring or with the position switching mechanisms.

Have you had any exhaust system work done to the vehicle recently whereby the wiring has been damaged or burnt if there is a loom near the back of the bulkhead?

Might sound crazy but have you checked stuff like the ATF level and the Park Switch situated on the gear shift lever mechanism in the center consul. There are all manner of interconnects on these systems.

On my Terrano r3mR I lost the use of the overdrive switch due to a snagged wire in the gearshift mechanism. I basically re-wired the overdrive switch between the gear lever and the switch wiring loom. It took some doing getting a fine flexible wire down the gearshift tube. I ended up using some wiring for a turntable arm for this as it was nice and thin and would take the moving action when moving the gear lever. It was when I was fixing this that are saw all the various bits of wiring involved in the gear selector systems including the Hi & Lo positions as well as the 2 & 4 WD switches.

Just trying to think what might have caused the problem.

I haven't yet tried to park on the hill but still have got a feeling this is wire connections related. The only thing done to Terrano recently is MOT and replacing rear tyres. ATF level seems to be ok as far as I checked today. It's within the level the dip bar indicated.

Snagged wire sounds complicated to recover....I really want to check the connections from the transfer box but haven't been able to remove the centre box (I suppose I need to remove dash/centre box to reach the wire connection from the transfer box?), or the connections are actually underneath of the car?

 

[Banshee]

I haven't yet tried to park on the hill but still have got a feeling this is wire connections related. The only thing done to Terrano recently is MOT and replacing rear tyres. ATF level seems to be ok as far as I checked today. It's within the level the dip bar indicated.

Snagged wire sounds complicated to recover....I really want to check the connections from the transfer box but haven't been able to remove the centre box (I suppose I need to remove dash/centre box to reach the wire connection from the transfer box?), or the connections are actually underneath of the car?

You can check from inside or underneath, I'd probably go for an inside job if you've not got a friend to help right now and looking out the window at the current weather conditions!!

 

[briggie]

from the manual

Automatic transmission park
warning light (ATP )

This light indicates that the automatic transmission
parking function is not engaged. If
the transfer control shift lever is not secured
in any drive position while the automatic
transmission selector lever is in the P (Park)
position, the vehicle may move unexpectedly.
Shift the transfer control shift lever into the
2H, 4H, or 4L position when the warning
light comes on.
c
When parking, always make sure that the
transfer control shift lever is in 2H, 4H, or
4L and the parking brake is set.

c
If the ATP light is ON, this indicates that
the automatic transmission P (Park) position
will not function and the transfer
control shift lever is in the N (Neutral)
position.

c
Failure to engage the transfer control shift
lever in 2H, 4H, or 4L could result in the
vehicle moving unexpectedly, resulting in

serious personal injury or property damage.

 

[zephyr]

You can check from inside or underneath, I'd probably go for an inside job if you've not got a friend to help right now and looking out the window at the current weather conditions!!

Yeah, I didn't really go out over the Christmas holiday and only my partner could help, but she's not soo interested

I was trying to find schematic but still not sure exactly what this relay is related to. Now my job has started and I'd have time only over the weekend:doh Things are becoming difficult, only disconnected relay helped so far. Looks like even if I removed the centre tray, might be difficult to get in to see the plugs for connections?

I'll see if I can get my partner to help though. As long as I can see go underneath, I should be able to see the area where the transfer box is, right? (sorry for basic questions!)

 

[zephyr]

Automatic transmission park
warning light (ATP )

Yeah, briggie, ATP light is a proper warning light, but in my case it appears to be different as my transfer control shift lever is always in 2H, unless this 2H is not properly engaged which might grow into a serious issue.

Currently my Terrano runs without any issue. This ATP flickering comes with the piercing noise, which also sounds like to be affected the car's body movement e.g. ramp, small holes (when I felt impact from the ramp, the noise happens, then became quiet on the flat surface until next ramp etc.) and this made me think somewhere between the transfer case and the relay there might be a connection issue.