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Deafdog



Member Since: 13 Sep 2015
Location: Northern Rivers NSW
Posts: 20
Australia 
Defender My15 90 replacing a Throttle assembly LR030043
Hi
Has anyone changed a Throttle Assembly LR030043 on a Defender My 15 90?

I have error code P2122
Throttle/ Pedal position sensor/switch D circuit low input intermittent

When I accelerate there is a hesitation and it has kicked me into limp mode and for some reason the Direction Stability Control light comes on.

If I turn off the defender and restart, the light goes off but engine check light (amber) stays on.

The other error code I get from the Nanocom is code UO401
Invalid data received from engine control module/powertrain control module intermittent.

I am assuming this is related to a faulty throttle sensor?

I can reset using the Nanocom but it is starting to get worse.

I assume I need a new throttle assembly?

If you change the Throttle assembly do you need to reset anything or is it a remove and replace?

Thanks for any input you may have.

Regards

Deafdog
Post #959942 29th Jul 2022 11:04am
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Deafdog



Member Since: 13 Sep 2015
Location: Northern Rivers NSW
Posts: 20
Australia 
Hi Guys

An Update.

I received a replacement TPS from Island 4x4 in Kent today.

Cost was about half of what I would have paid in Oz.

Even with DHL express shipping.

Sent the 3rd of August, in Sydney custom cleared 6th August, arrived in Lismore 9th August.

Thanks Guys.

In removing the TPS the 3 bolts you have to undo have a nut on the other side of the firewall.

This makes it a two man job to do.

One inside the cab the other underneath to hold the nuts while you remove and retighten the 3 bolts.

Remove the bolts unplug the wires remove old TPS connect wires to new TPS and replace bolts, done.

Started and runs OK and the throttle does what a throttle is supposed to do.

Haven't road tested as yet but so far so good.

Regards

Deafdog
Post #961320 11th Aug 2022 9:15am
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macfrank



Member Since: 05 Nov 2015
Location: somewhere in the north
Posts: 1076
Germany 2015 Defender 110 Puma 2.2 SW Keswick Green
Interesting, thanks for the update. So, I guess for safety reasons you can‘t replace just the sensor? The workshop manual also only says, „unscrew, unplug“ pedal assembly (tighten to 25Nm).

Also interesting IMHO: what they call ‚accelerator pedal position (APP) sensor’ is a set of two potentiometers with independent power supply, and

‚If one of the inputs from the APP sensor fails, or there is a fault with the ground or supply connections, the ECM limits engine response to that produced by the first 28% of accelerator pedal travel.

If both inputs fail, there will be no response to accelerator pedal operation. The engine will idle at a raised value while the brake pedal is released, and at the normal value when the brake pedal is pressed. This allows a restricted limp-home operation‘
Post #961329 11th Aug 2022 10:26am
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