Attached Table 2: Fault code table

The MT05 fault code table
The fault code	description	Corresponding to the decimal number
P0107	Open circuit for intake pressure sensor or signal end pins shorted to battery negative
P0108	Intake air pressure sensor signal end pins shorted to battery positive
P0112	Intake air temperature sensor signal end pins shorted to the battery negative
P0113	Open circuit for Intake air temperature sensor or signal end pins shorted to battery positive
P0117	Cylinder head temperature sensor signal end pins shorted to battery negative
P0118	Open circuit foe cylinder head temperature sensor or signal end pins shorted to the battery positive
P0122	Open circuit foe throttle position sensor or the signal end pins shorted to battery negative
P0123	Throttle position sensor signal end pins shorted to battery positive
P0131	Front cylinder oxygen sensor signal end pins shorted to battery negative
P0132	Front cylinder oxygen sensor signal end pins shorted to battery positive
P0031	Front cylinder oxygen sensor heating end pins shorted to battery negative
P0032	Front cylinder oxygen sensor heating end pins shorted to battery positive	49.
P0201	Front cylinder injector fault
P0202	Back cylinder injector fault (such as fuel injector plug is not plugged in)
P0230	Pump open or short circuit to the battery negative
P0232	Pump short circuit to battery positive
P0336	Crankshaft position sensor interference
P0337	Crankshaft position sensor without signals
P0351	Front cylinder ignition coil fault
P0352	Back cylinder ignition coil fault
P0562	EFI system voltage is too low
P0563	EFI system voltage too high
P0560	Fault for fault lamp (bad filament or plug-in board is not plugged in)
P1693	Tachometer line short-circuit to the battery negative
P1694	Tachometer line short-circuit to the battery positive
P0137	Back cylinder oxygen sensor signal end pin shorted to the battery negative
P0138	Back cylinder oxygen sensor signal end pin shorted to the battery positive
P0038	Back cylinder oxygen sensor heating end pins shorted to battery positive
P0037	Back cylinder oxygen sensor heating end pins shorted to battery negative	55.

Common troubleshooting

Maintenance tools

a) Disassemble of the electronic control system components - withdrawal tools of automotive mechanical parts are often used

b) Electronic control system circuit and system signals - digital multimeter (with buzzer)

c) Fault diagnosis of electronic control system and detection of engine's working condition

n Electronic control system malfunction diagnostic apparatus (recommended)

n Failure diagnostic software (PCHUD,) and interface connection wire (conditional use)

d) Electronic control system failure fault code table (emergency use)

e) Fuel pressure gauge, range 0 ~ 300kPa

Diagnostic apparatus displays engine operating data stream

Use the engine operational data stream the diagnostic apparatus displays to analyze and determine the engine failure.

Step 1

a) Engine wiring harness and vacuum tube - may affect the system to control air flow and fuel supply

b) Whether the oxygen sensor installation is in place - may affect system's judgment of the air-fuel ratio.

c) Engine fault indicator - impacts system failure alarm

d) Battery voltage - to determine the adequacy of battery power

e) According to experience to judge whether the displayed value of coolant temperature sensor, intake air temperature sensor, intake manifold absolute pressure sensor and oxygen sensor is normal

f) Operating range of the throttle position sensor - that it cannot be fully opened or fully closed may affect engine dynamic performance and some system functions

Step 2

Whether the ECU power supply is turned off - communication between the diagnostic apparatus and system is terminated after the key switch is turned off.

Step 3

a) Coolant temperature and coolant temperature cycling - indicates whether the thermostat is working properly

b) Battery voltage - indicates whether the generator is working properly.

Too high: It may be the generator regulator failure;

Too low: It may be the improper generator connection or generator failure

c) Intake manifold pressure - may indicate whether there is leakage in inlet air and problem for valve clearance.

Valve clearance is too small: this value is on the high side; it may affect the power of the engine, and because of the exhaust valve too early to open, that the exhaust temperature increases greatly shortens the life of the oxygen sensors and catalytic converters;

The valve clearance is too large: it will cause the intake manifold pressure is on the low side, and impact judgment of the system on the engine operating state, resulting in idling exception while warming up the enginecycle.

In addition, if the exhaust system is blocked, for example, foreign body presents in the exhaust passage, excessive oil consumption resulting in clogging catalytic converter and blockage resulting from the internal fragmentation of the catalytic converter, and it will cause this value is too high.

d) Number of cycles of the oxygen sensor values - too little number of cycles, indicating the oxygen sensor failure.

Concise troubleshooting

Please repair fuel injection systems according to the following sequence of steps; if troubleshooting can be finished in some step, the follow-up steps may be omitted. And then with use of diagnostic equipment, make inspection and erase the fault code according to 14.4.2.

In use of diagnostic equipment, the battery voltage is not less than 8.5 volts.

Daily use and maintenance

l Petrol should be such high quality unleaded petrol as 92# or 95#.

l ECU has a moisture barrier, but its shell may not be washed with water cannon.3}

l Replace the fuel filter every 7,000 ~ 10,000km.

l Under normal conditions of use, clean the throttle body once every 10,000 km or 1 year.