Toyota Stepper Motor Failure

At Bailey’s Diesel, we’ve been receiving an increased number of phone calls for Toyota 1KD, or Toyota Hilux , Prado and Hiace fitted with 1KD engines, and turbocharger Stepper motor related fault codes, or running engine problems.

The Problem

Generally speaking, they will throw a code that states faulty stepper motor. It can be a bit of a troublesome fault code to solve, because it’s quite common that the Stepper motor driver, which is an external computer system or external ECU from the main ECU, has failed, not the actual stepper motor.

Before replacing a complete turbocharger with the Stepper motor assembly, it is worth ensuring that the external Stepper motor driver is not the issue, before spending the money.

The Solution

The next situation is that in many instances, the actual Turbo charger itself is fine, but the Stepper motor itself has failed. Where previously you would have to replace the entire turbo-charger at a cost of $3,500 dollars, Bailey’s Diesel now has the Stepper motor available as a separate item, which saves the customer a few grand in the process. It’s a simple solution to a simple problem.

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