Wechai Power engines PDF manuals, wiring diagrams and Fault Codes

View errors

The corresponding element in the

Questions

The cause of the error

Method of eliminating

Error code

Errors associated with starting the engine

AD converter malfunction in ECU

ECU. Error in signal processing has led to failure, did not even start the engine.

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Replacing The ECU

1

1

1

Bug synchronous signals

Signal synchronization errors can lead to abnormal fuel injection, hard starting, exhaust black smoke, abnormal noise of engine etc.

Error signals measured sensor crankshaft or camshaft speed sensor

Check connections and crankshaft sensor. Check the clearances of the crankshaft sensor and the flywheel within 1.0 ± 0.5 mm

1

1

2

1

1

3

1

1

4

Item error processing time at ECU

Engine stalls, won't start

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Replace The ECU

1

1

5

-

Lack of engine power

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Switch off the power and ECU reset ECU, if the problem is not resolve itself, replace the ECU

1

1

6

Error starting relay

The engine does not start.

Damage to the wiring harness, damage the actuator relay

Check the Starter relay and its circuit

1

2

1

Switch error T15

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-

Check breaker T15

1

2

2

Switch error T50

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Activation switch more 120s

Check the switch T50

1

2

3

Battery

Power fault

Battery voltage too high (> 36V) or too low (< 6V)

Check the wiring harness battery, engine and car

1

2

4

Pulse spectrum diagram FMTC

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Error setting

Change setting

1

2

5

The power supply of the sensor in ECU

Error in ECU or short circuit pressure sensor inlet (2.33), oil pressure sensor (2.32) with power car (24V) or grounding

Check the wiring harnesses, pressure sensors, inlet oil pressure (maximum current supply 90mA)

1

3

1

Lack of engine power

Error in ECU or KZ supply (1.84) sensor no. 2 accelerator pedal

Check sensor no. 2 accelerator pedal (maximum current supply for SSP2 90mA)

Lack of engine power

Error in ECU or shorted power supply (1.84) sensor no. 1 pedal or SHORT CIRCUIT pressure sensor line (2.13)

Check sensor no. 1 pedal pressure sensor line (SSP3 power Max current 50mA)

Error main relay

General pipe pressure limiting valve (PRV) is open, the engine's lack of

Short circuit element flow measurement (3.09 3.10)

Check wires on flow sensor SHORT CIRCUIT or open circuit

1

3

2

Output short circuit power supply ECU (1.04 2.03)

Check the wires for the presence of: 2.03 1.04? CZ (Note: you must use the power output of the ECU is not allowed to use external power supply)

The relevant elements of the common system backbone

Pressure sensor line

Open the pressure limiting valve tubes General Highway

Flow measurement element damage or SHORT-CIRCUITS, open circuit

Check flow measurement items and a bunch of wires on the presence of a SHORT CIRCUIT or breakage

1

3

3

Faulty pressure limiting valve common Highway

The issue of fuel lines. Pressure sensor line, the element flow measurement, occlusion and bypass the supplied fuel will lead to too many perenastrojkam backbone pressure

Check out toplioprovody and a pressure sensor line, flow measurement element

1

3

4

Flow dimension member error

Flow measurement element is damaged or kz, open circuit wiring harness

Check flow measurement elements and a bundle of wires

1

3

5

General line item

Dekompressirovanija valve for line pipes

Serious valve wear dekompressirovanija causes abnormal fluctuation of pressure line

Occlusion the low pressure fuel line (including the fuel feed and bypass fuel) causes frequent opening or opening the valve of dekompressirovanija too long

Replace the ramp

1

3

6

Injector

Error injector cylinder 1

Lack of engine power, unstable (engine troit)

Bad contact harnesses atomizers or breakage of the wires

Check wiring harness and their connection with nozzle

1

4

1

Error injector cylinder 2

1

4

2

Error injector cylinder 3

1

4

3

Error injector cylinder 4

1

4

4

Error injector cylinder 5

1

4

5

Error injector cylinder 6

1

4

6

Capacitor control injector

Error 1 condenser control nozzles 1.2.3

1

5

1

Error 1 condenser control nozzles 4.5.6

1

5

2

Chip injection

Injector control chip error

1

5

3

Injection

Does not reach the minimum number of normal working nozzles

Stopping the engine

Short-circuit or disconnection harnesses more than 3 cylinders

Check wiring harness injectors each cylinder

1

5

4

Limitation of nozzles in ECU

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-

-

1

5

5

The important switches, sensors

Water in fuel

Water content indicator lamp in the fuel burning, the water level alarm

Diesel fuel coarse purification filter filled with water

Drain the water from diesel fuel

2

1

1

Sensor error 1 pedals

Revolutions of the crankshaft around 1000 rpm

Open circuit or defective accelerator pedal

Check the chain on the presence of breakage and SHORT CIRCUIT, Replace the accelerator pedal

2

2

1

Sensor error 2 pedals

Clutch sensor error

Cruise cannot be executed

Faulty sensors or open circuit

Check sensor wiring harness

2

2

3

Brake switch error

2

2

3

Brake switch error

Activating the brake fails, it is not allowed to carry out cruise

Before the cruise, you should press the brake pedal

2

2

3

Confidence check error valve gas and brake

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Simultaneous pressing the pedal of acceleration and brake pedals

Check the chain sensor brakes on presence of CZ

2

2

5

Motor protection

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Overclocking engine (> 2650rpm)

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2

2

6

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-

-

2

2

7

Reconfiguring the engine torque

Not successfully increase torque

Too large an input torque transmission box

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2

2

8

Remote valve gas pedal

Not effect pedal remote gas valve

Sensor error valve gas pedal or short circuit, open wire harnesses

Check the sensor wire harness, if necessary replacement pedals gas valve

2

2

9

Inlet pressure sensor

Emergency towing

Sensor error or short circuit, open circuit

Check the sensor wire harness, if necessary, replace the sensor

2

3

1

Atmospheric pressure sensor

This sensor installed on the ECU, check the likelihood of clogging

2

3

2

Intake temperature sensor

Check the sensor wire harness, if necessary, replace the sensor

2

3

3

Coolant temperature sensor

Emergency towing is not the normal operation of the heater air inlet

Check the sensor wire harness, if necessary, replace the sensor

2

4

1

Coolant temperature too high

When the coolant temperature is above 105 degrees, the engine is operated with limited capacity

Coolant temperature too high

Check engine cooling system

2

4

2

Oil pressure too high

Oil pressure distortion if the device uses a CAN bus

Error sensor oil pressure or oil pressure too high

Too high oil temperature

2

4

3

Oil pressure too low

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Oil pressure too low

Oil temperature sensor

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Too high oil temperature

2

4

4

Too high oil temperature alarm

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Too high oil temperature

Test water temperature sensor

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-

-

2

4

5

Monitoring of fuel pressure in the line

High-pressure fuel line issue/low pressure fuel line (leaked)

Hard start, will not start. Open the pressure limiting valve, leaking large amount of high-pressure fuel

Too much flow resistance of fuel or fuel leaks.
Too much resistance fuel bypass

Check the fuel lines to the engine. If you need replacement filters, fuel line, etc.

2

5

1

2

5

2

2

5

3

2

5

4

2

5

5

2

5

6

2

5

7

ECU

ECU system return to its original position

Open the pressure limiting valve, emergency towing

Internal error in ECU

After disconnecting the AC switch. If the matter is not resolved, you should replace the ECU

2

6

1

-

Test on overclocking

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-

-

2

6

2

ECU check and measurement equipment internal ECU

Chip CJ940

Engine ignition fault

Communication error

After disconnecting the current restart System

2

6

3

Too high tension

Too low internal stress

ECU chip and Watchdog

Fault ignition engine (after AC restart)

Communication error

2

6

4

EEPROM (erasable programmable read only memory)

On kilometre information may not be registered

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Replacing The ECU

2

6

5

ECU functions and switches

Solenoid valve exhaust brake

Exhaust brake is defective

Short circuit motor brake solenoid valve (2.06) with meals

Check the exhaust brake solenoid valve circuit

3

1

1

Short circuit motor brake solenoid valve (2.06) weighing

AC Compressor Relay

AC compressor not working

Error connecting AC Compressor Relay

Check the relay and its compounds

3

1

3

Inlet heating relay

Heating air inlet may not function correctly.

Short circuit relay with ground or power

To verify a connection relay heating air inlet

3

2

1

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-

3

2

2

3

2

3

Vehicle speed sensor

May not be a cruise out of the car button has no effect

Exceeding the maximum speed of the car or not reliable signals of the speed of the car, not a stable voltage

Check the vehicle speed sensor connection, if necessary, replace the sensor

3

2

4

Many provisions of the switch

Torque limitation, limiting speed and other functions cannot be performed

Error wiring harnesses or resistor

Error wiring harnesses or resistor

3

2

7

Lamp system

The indicator function of the respective lamps are not met

Connection failed or connection is not implemented

Test connection

3

3

1

Lamp cold start

3

3

2

Signal lamp

3

3

3

Water in fuel lamp

3

3

4

Cruise switch

May not be a cruise/PTO, or cruise/PTO goes out of action

Cruise switch error

It is recommended that you switch samovosstanovitelnyj

3

4

1

Exhaust brake switch

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-

-

3

4

2

Switch out of the car

Start without a car could not be implemented

Sticking switch

Check the circuit breaker or circuit wires

3

4

3

External dimension

Check Disable ignition

Lack of engine power, not stable operation

Disabling cylinder No. 1

Check the appropriate nozzle, sealing lid cylinder, valve clearance, etc.

5

1

1

Disabling cylinder No. 2

5

1

2

Disabling cylinder # 3

5

1

3

Disabling multiple cylinders

5

1

4

Disabling cylinder No. 4

5

3

1

Disabling cylinder # 5

5

3

2

Disabling cylinder # 6

5

3

3

External dimension

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-

5

3

4

These faults relate to functional indication. When applying the diagnostic tool for the revitalization of internal measuring functions will turn out good, ate ECU measurement, then saves the Flash code.

5

2

1

5

2

2

5

2

3

Issues related to starting

The issue of synchronous signals

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Poor surface of the teeth of the flywheel

Replacement flywheel

5

4

1