U0117: Perda de comunicação com o módulo de controle da tomada de força
O que fazer
The equipment — tipper, crane, mixer, pump, winch — will most likely not run at all, and the vehicle will drive normally.
That is the safe outcome: when the computer controlling the power take-off goes quiet, the rest of the vehicle assumes it is not engaged and refuses to run the equipment.
One thing to check before driving off, though. If the PTO was engaged when the fault appeared, confirm the equipment is actually disengaged rather than trusting the dashboard, because the dashboard has lost the thing that was telling it.
Contact whoever built or converted the body before a general workshop. This wiring is almost always fitted by the converter rather than the vehicle manufacturer, and the fault is nearly always at the join between their wiring and the chassis wiring — a corroded splice, an earth on painted metal, a cable rubbing on something that moves.
If it works from cold and fails once warm, or fails on rough ground, say so. Both descriptions point straight at that join and save a great deal of searching.
O que este código significa
The power take-off control module has stopped being heard from. The general reasoning is at U0100, and U0465 explains what a PTO is and why its published state governs a set of safety interlocks.
Silence and bad data fail differently here, and the difference is worth stating because one of them is much better than the other.
A module reporting an implausible state leaves the interlocks acting on something untrue. A module that has gone silent normally makes every other system default to not engaged — which is the safe assumption, and usually means the equipment simply will not run.
So the common outcome is a vehicle that drives perfectly and a tipper, crane or pump that does nothing, which is inconvenient rather than dangerous. The uncommon outcome is the one to check for: if the PTO was engaged when communication was lost, the mechanism may still be engaged while the vehicle believes it is not. Confirm the equipment is actually disengaged before driving, rather than trusting a dashboard that has lost its source.
Where the fault is has the same answer as U0465, and it is worth acting on rather than reading past. PTO wiring is installed by the body builder rather than the vehicle manufacturer, so the fault is almost always at the join between the chassis harness and the body harness — a spliced connection that has corroded, an earth taken to painted metal, a cable routed against something that moves. A vehicle that works from cold and fails once warm, or fails on rough ground, is describing that join.
Contacting the converter before a franchised workshop is usually the shorter route, because they installed it and hold the drawings.
Causas prováveis
Comece aqui
- Emenda de fiação malfeita em instalação de terceiros · moderado
- Conector corroído ou frouxo · fácil
- Conexão de massa corroída · moderado
- Chicote elétrico danificado · moderado
Menos comum
Sintomas
Componentes envolvidos
Informação, não instrução
O CarGeek é uma referência, não um manual de serviço. Suas páginas são escritas a partir de fontes públicas e do que outras pessoas constataram, nunca a partir da documentação de serviço do fabricante, de modo que podem estar erradas ou incompletas para o seu veículo específico. Parte do que descrevem envolve risco real: alta tensão, combustível sob pressão, energia acumulada e peças quentes ou em movimento.
Antes de agir com base em qualquer orientação, peça a verificação de uma pessoa com formação técnica, seguindo o procedimento do próprio fabricante para o seu veículo. Nada aqui substitui esse procedimento.
Experiência da comunidade
Seja o primeiro a documentar isto
Ainda não há publicações sobre isto. Vale a pena anotar tudo o que você descobriu — até um beco sem saída poupa a mesma tarde de outra pessoa.
O que faz valer a leitura:
- O carro — marca, modelo, ano e motor. A mesma falha se comporta de forma diferente em cada um.
- O que você mediu, não só o que trocou.
- O que realmente resolveu — ou que nada resolveu, o que também vale saber.
Entrar ou criar uma conta para adicionar o que você descobriu sobre U0117.