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Spent last few weeks drawing out my new wiring diagram.

I've come across an issue i need help with clarifying.

Employing DBW which will be on AUX 1 and AUX 2 outputs.

The data sheet that came with the 57007 sensors says any AUX output is OK for heater -ve.

However, I recently read that the NTK heater circuits won't work unless they're on the high current outputs AUX 1 and AUX 2. And if those outputs taken by DBW i need to use a PWM relay.

1) Is that true?

2) If yes, will one relay be OK?

3) Is the Bosch-style Hella relay suitable? (i'm aware the pinouts are different to normal relays)

4) Wiring - low side output from ECU connects to -VE of relay and +ve to A26?

Thanks!

Hi,

Where was that information posted?

There is no issue with running the NTK sensors on the other Aux Outputs.

SDean wrote:There is no issue with running the NTK sensors on the other Aux Outputs.

Thanks for quick reply. That's great news - my wiring plans can remain unchanged!

SDean wrote:Where was that information posted?

On the Facebook MoTeC Tuning Forum

From Help

9 : Lambda Sensor Heater Control
Controls the current to the Lambda sensor heater.
This is required for all wide band sensors that connect directly
to the ECU.
Note: The sensor heater should normally be connected to either
Auxiliary Output 1 or 2, however if these are required for
another function such as DBW then another Auxiliary output
or Ignition Output may be used.
Note: Not suitable for the Injector Outputs due to tripping the
short circuit limit when the sensor is cold.

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