We have a problem with one of our 2013 Polaris Ranger EFI 500 4x4s that we are trying to fix and it has utterly thwarted us. When the issue first presented it self, we were informed that it "just stopped" while driving along. It seemed like running out of fuel so I refilled it and it would not start. It was -20 degrees Celsius outside at the time. Bringing it into the workshop I got the fault codes off it which are;
22 – TPS Open Circuit/Short to ground or battery Voltage
41 – Intake Air Temp sensor Open Circuit/Short to ground or battery Voltage
42 – Engine Temp sensor Open Circuit/Short to ground or battery Voltage
45 – Manifold Absolute Pressure Sensor Open Circuit/Short to ground
46 – Manifold Absolute Pressure Sensor Short to Battery Voltage
51 – Injector Open Circuit/Short to ground or battery Voltage
So, at the same time we checked the spark which is strong, set gap on the plug and cleaned it. Also checked the fuel pump for operation and cleaned the strainer filter. The injector is injecting fuel when the engine is cranking. We tried cleaning all the sensors and then swapped out the Coil, Ignition module, TPS, IAT, ETS, MAP, Crank angle sensor and Injector with the other identical Polaris we have and the same codes were returned after resetting the ECU. We also swapped the ECU. We compression tested the engine and found it to be slightly low, but not low enough to prevent it from firing. We also found that the engine oil was diluted with fuel and water, so the lubrication system was flushed many times with diesel and oil until clean and new oil and filter added. Upon bore inspection with a camera we found damage present that is indicative of the diluted oil.
Then we started testing the wiring loom. We checked continuity between all of the sensor plugs and the plug on the ECU and also for short to ground or battery +ve, all sensors plugs had continuity with no (little) resistance back to the ECU plug and there were no shorts found. We traced out the entire wiring diagram and checked everything we could think of that was common to the fault codes returned as well as the wiring for the injector which is not directly connected to the other sensors.
Still it will not start. We have run out of options for testing things and were hoping someone may have had a similar or same issue before with this model.
We have a problem with one of our 2013 Polaris Ranger EFI 500 4x4s that we are trying to fix and it has utterly thwarted us. When the issue first presented it self, we were informed that it "just stopped" while driving along. It seemed like running out of fuel so I refilled it and it would not start. It was -20 degrees Celsius outside at the time. Bringing it into the workshop I got the fault codes off it which are;
22 – TPS Open Circuit/Short to ground or battery Voltage
41 – Intake Air Temp sensor Open Circuit/Short to ground or battery Voltage
42 – Engine Temp sensor Open Circuit/Short to ground or battery Voltage
45 – Manifold Absolute Pressure Sensor Open Circuit/Short to ground
46 – Manifold Absolute Pressure Sensor Short to Battery Voltage
51 – Injector Open Circuit/Short to ground or battery Voltage
So, at the same time we checked the spark which is strong, set gap on the plug and cleaned it. Also checked the fuel pump for operation and cleaned the strainer filter. The injector is injecting fuel when the engine is cranking. We tried cleaning all the sensors and then swapped out the Coil, Ignition module, TPS, IAT, ETS, MAP, Crank angle sensor and Injector with the other identical Polaris we have and the same codes were returned after resetting the ECU. We also swapped the ECU. We compression tested the engine and found it to be slightly low, but not low enough to prevent it from firing. We also found that the engine oil was diluted with fuel and water, so the lubrication system was flushed many times with diesel and oil until clean and new oil and filter added. Upon bore inspection with a camera we found damage present that is indicative of the diluted oil.
Then we started testing the wiring loom. We checked continuity between all of the sensor plugs and the plug on the ECU and also for short to ground or battery +ve, all sensors plugs had continuity with no (little) resistance back to the ECU plug and there were no shorts found. We traced out the entire wiring diagram and checked everything we could think of that was common to the fault codes returned as well as the wiring for the injector which is not directly connected to the other sensors.
Still it will not start. We have run out of options for testing things and were hoping someone may have had a similar or same issue before with this model.
