4ZB1 engine ecu communication problem - Isuzu Forums - Isuzu Enthusiasts Forum


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Old 08-02-2017, 12:58 PM
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Join Date: Aug 2017
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Default 4ZB1 engine ecu communication problem

Hello....

We have a ISUZU engine its a brand new 4 cylinder 1.8 Ltr petrol engine and runs on Bosch ECU...
Attached is picture of ECU

we only have engine as we are making test rig to perform certain experiments...

We start engine by giving direct supply to its self.

the engine is running good but the problem is that is is not communication to OBD2. The supply comes in obd module(Light glows on bluetooth module) and when we use obd to usb cable it try to communicate to ecu as led flases but ecu is not responding.

I think there is somme issue in data handshake as we are not giving any valid key ecu though ignotion system or what else can be solution.


looking for your views...

Thanks in advance...

Regards
Davinder
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