renault-symbol-instrumant-panel-repair

Renault Symbol Instrument Panel Repair

Renault Symbol 1.5 DCI owner called our garage and reported that there was a problem with the ECU and display of his vehicle(Symbol Instrument Panel Repair).

We asked him to remove the ECU and the indicator of the vehicle and send it to us. We took the SAGEM brand S3000 coded engine Ecu and indicator to the desktop.


Using the Ecutest Ecu Simulation and Test Device, we connected the ECU, which is SAGEM S3000, and the indicator to the device by looking at the pin diagrams.

Ecutest Ecu Simulation and Test Device is the device that allows us to control the ECU and the instrument panel as if we were on the vehicle.

We set up our connection by looking at the schematics loaded in the Ecutest Ecu Simulation and Tester and run our simulation by powering 12V.

Since the Ecutest Ecu Simulation and Testing Device is a test device that provides the opportunity to adjust the firing time of the sensors, valves, injectors inside the ECU and the firing times of the ignition coils, our job is very easy. We have observed the change in the display by running our simulation screen and playing with the sensor values.

ecutest-ecu-test-simulator
ecutest-ecu-test-simulator

As a result of this observation, we saw that when we changed the value of the ECT (Engine Coolant Temperature Sensor), which is the Engine Coolant Temperature Sensor, on the Ecutest Ecu Simulation and Test Device simulation screen, there was no change in the display of the vehicle.

Thus, we have determined that the problem is not in the ECU, but in the indicator. When we opened the back of the indicator, we examined the needle showing the engine temperature affected by the ECT.

When we examined the way to the needle indicating the engine temperature, we found that the diode exploded, did not transmit power and consequently prevented the correct operation of the needle indicating the engine temperature.


With the help of a soldering iron, we carefully remove the defective diode, which has lost its function, without damaging the indicator. We carefully replace the solid diode.

We check the disassembly and assembly process we made with the help of the multimeter and see that it is okay. When we connected our indicator and ECU back to the Ecutest Ecu Simulation and Test Device, we observed that the indicator also changed when we changed the value of the Engine Coolant Sensor. When we checked the other sensors, we found that there was no problem, they were working without any problems.

Thus, thanks to the Ecutest Ecu Simulation and Testing Device, we tested both the ECU and the Instrument Panel very easily and in the shortest time. Later, we delivered the ECU and the Instrument Panel to our customer.

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