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 Car Talk › Re: How Do I Fix This Persistent Error Codes. by DMechy: 1:12pm On Apr 15, 2021 |
The Oxygen Sensor and Evap Code I have a hunch they are related, having gone through the wiring diagrams. To save diagnostic time, Check this first. Fuse 14, in the fuse box. It is 15A, and PGM-FI sub relay, they both feed power to the evap valve and heater circuit. Test. With your tester end lead on negative terminal. Check if it works, by putting the test end on battery positive. 2. Probe the two ends of the fuse, the tester should light up on both ends. If only one lights up. Remove fuse, physically inspect, and see if it is broken. If broken, replace fuse. In fact, test all fuse in the fuse box and replace all broken fuse Problem Solved. Wipe code, and see if it comes back. Step 3 If fuse is good! Relay is next, swap the PGM-FI relay with a similar relay in the box Wipe code, and start vehicle. If fault returns, then we need to go through diagnostic steps. This should be the problem. Whether it is or not, we will go through the test process to diagnose the fault on both system for knowledge sake and in the interest of those following the thread. Oga Kelvin30286063, come do work
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| Car Talk › Re: How Do I Fix This Persistent Error Codes. by DMechy: 12:37pm On Apr 15, 2021 |
Starting with you ECT sensor. Why? it is the easiest to diagnose, and affects closed loop for fuel trims, and evap operation. Though the fault code from the oxygen sensor is from the heater circuit, i don't think they are related. Diagnosis. To diagnose a system, you need to understand how the system works and the Engine Coolant Temperature is not a complex system that is had to diagnose. Though a simple system, it is very much significant for the optimum performance of your vehicle. It feeds values to your Engine Control Module, a fault in the system can greatly affect your vehicle. Systems that depends on the Engine Coolant Temperature Sensor. 1. Main Input for cranking air/fuel ratio and warm up fuel curve. - The colder the engine, the richer the ratio i.e, a faulty Engine Coolant Temperature sensor or system, can lead to high fuel consumption or incomplete combustion. 2. Input for electronic control Fan With this input, the ECU knows when to turn your fan on. Of course, if the vehicle has not been abused and the fans connected direct. 3. One of the input for electronic climate control system - Indicates heater core temperature. 4. One of the inputs for Idle speed control. - Cold engine, fast idle speed. The reason why vehicles have idle, then stabilize when first started in the morning. 5. Other systems AC clutch, Egr Control, Air pump, spark timing, open and closed loop operation. So. The Engine Coolant System can make - Your ac not work, shuts off when overheating, or when it is assumed overheating due to fault in the system - No EGR (Engine Gas Recirculation) on cold engine -No air on warm engine -No closed loop below 150 degree Fahnherite. How does the System Work. We will focus on type in yours. They are most times 2 wired or 3. The most common are the 2 wired. The two wired. - A ground - Power(Not really power, but a 5v refrence) The Engine Coolant Temperature Sensor is a thermistor. A Resistor that decreases in Resistance with increase in temperature. The variation in resistance is what the ECU uses in determining engine temperature. The simple design, makes testing easy too. How To Diagnose An Engine Coolant Temperature System. In diagnosing A system, you need to analyze what could be wrong. The retrieved fault codes are the first pointers, makes diagnosis easy. For the Acura. P2185 - Engine Coolant Temperature Sensor 2 Circuit High Circuit: Leaning to a sensor not connected, a wiring problem or a bad sensor. It is also worthy of note, that a broken sensor will lead to a circuit fault too. Circuit High: -The sensor is probably not plugged, - Open wire (broken wire) -Bad Sensor In this order. Now, the best diagnostic tool is the cheapest in the market, Cost less than a A Naira. Name: Your Senses. Sense of sight, Smell,Taste, Feel.. Add. So here, Before going all techy. Do a physical Inspection. Is your fan connected directly, this is a pointer to. Obviously, the ecu no longer controls the fan due to rewiring (abuse) 2. Check the Sensor Is it connected? Inspect the grips and connection. If all of this is Ok Then Test. What do you test. Wiring Integrity. All wires in a vehicle lead to the ECU and other modules that communicate with the ECU With a wiring diagram and common sense, you become a pro in fixing cars. It is good to use Google, it contains a wealth of information, but someone put that information there, which might not necessarily be the same fault with yours, and of course, if there is no someone with knowledge, there's no google. Wiring Diagram. Your ECT wires are Green and Red Location, under engine compartment, near thermostat casing From the Wiring Diagram Green - 5v reference Red - Sensor Ground or either of them should be 5v Both wires go to the ECU, Test for Wiring integrity:. From Diagnostic instruction, jumper the terminals, Check the dash, the temperature gauge should either go up or down. This shows good wiring integrity. At this point, you should be worried about a bad sensor. With the voltmeter, negative lead to Battery ground Positive to the Green. You should read 5 volts, if not, test the red. One should. 5v confirms, wiring to the ecm is good. Test red lead wire. : Should read 0.1 volts or less. Shows sensor ground is good. If not, open in wire. Test For the Sensor. Put your multimeter in continuity mode, in continuity mode, theres a beeping sound to show continuity Test the two leads of of the sensor. You should hear a beeping sound. no beeping sound. Sensor is bad. Replace Sensor. From The diagnostic code and experience: I think the sensor is not connected, or a bad sensor. Whatever the problem is, the diagnostic test will reveal the fault. Do this, lets get a feedback
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| Family › Re: How To Catch A Cheating Wife, Husband, Girlfriend, Boyfriend, Etc (pics) by DMechy(op): 7:25am On Apr 15, 2021 |
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| Autos › Re: 2008 Carefully Used Toyota Camry....Sold!!! by DMechy: 2:19am On Apr 15, 2021 |
Everybody don ask you how much tire. If you no talk, i will tell my boys, to help you slize onions on it, so you can have it for breakfast. As your shakara don dey gara. By the way, sweet ride. Happy rewarding sales 3 Likes |
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