DIY: Diagnose Daihatsu Mira Engine Through Diagnose Socket

Here is one of the nicest post that shows how to diagnose Daihatsu Mira engine. This is good that not many mechanics outside there do have a...

Here is one of the nicest post that shows how to diagnose Daihatsu Mira engine. This is good that not many mechanics outside there do have a diagnostic meter for such an engine. Normally when the engine check light is on which means that there is something wrong of your car's sensors. Most probably these sensors are not working or having problem. Anyway do not panic, we can check which sensors that are giving up their way through the   diagnostic socket.

Continue to read more for more detail information.

1.Tool that needed. Short wires.

2. Open up the diagnostic socket which located at the engine bay.

3. Short the wire at the terminal socket.

4. Turn the key to ON position. Then count how many times the engine check light blink. If there is no problem with all the sensors, the engine check light will keep on blinking without pausing while if there is a problem with either one of the sensor, the engine check light will blink then pause and then blink again. This is to show what is the engine error code. For instant, if the engine check light blink 5 times then pause and then blink 2 times again, this indicate that the error code is 52.

5. Here below are the Error Code.

Code	Diagnose Item	Diagnose Content	Trouble Area
13	Engine Revolution Signal	When engine revolution signal is not input while the starter switch is ON	Cam angel sensor and circuit
21	Oxygen sensor signal	When input signal from Oxygen sensor shows too lean. Air to fuel ration under certain condition	Oxygen sensor circuit and Oxygen sensor
31	Pressure sensor signal	When input signal from the pressure sensor becomes more than 4.9v or less than 0.7v	Pressure sensor circuit and pressure sensor
41	Throttle position sensor signal	When both idle switch, power switch position sensor become ON condition.	Throttle position sensor circuit and Throttle position sensor and ECU
42	Cooling water temperature signal	When the engine cooling water temperature sensor circuit become OPEN or SHORTED	Water temp sensor circuit, water temp sensor
43	Intake air temp signal	When the intake air temp sensor circuit becomes OPEN and SHORTED	Air temp sensor circuit, air temp sensor
44	A/C evaporator temp sensor	When the A/C evaporator temp sensor circuit exhibits OPEN or SHORTED	A/C evaporator temp sensor circuit, A/C evaporator sensor
45	A/C Compressor	When the A/C switch is turn ON, the rotation signal from the A/C compressor becomes too low because of slipping of the magnet clutch or overload	A/C magnet clutch and A/C lock sensor circuit
51	Switch signal	When the A/C switch is turn ON, the idle switch is turned off with the test terminal of the diagnostic connector SHORTED. However no more memoryzing will take place	A/C switch, Idle switch circuit, Throttle position sensor
52	Vehicle speed sensor signal	When the vehicle speed signal circuit exhibits OPEN wire or SHORTED circuit	Vehicle speed sensor circuit and vehicle speed sensor
81	Immobilizer signal	When the rolling codes cannot be exchanged between the EFi ECU and the Immobilizer ECU or the rolling codes are not matched	Wire harness between the immobilizer ECU and EFi ECU. Immobilizer ECU. EFi ECU
83	Immobilizer signal	When the rolling codes cannot be exchanged in the EFi ECU	EFi ECU

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