SsangYong: Engine Euro 4. Manual - part 63

 

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SsangYong: Engine Euro 4. Manual - part 63

 

 

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

40

DIAGNOSIS

ECU

Limp

Home

Mode

Immedi-

ately

Engine Stop

Delayed

Engine

Stop

Torque

Reduction

(max.50%)

Torque

Reduction

(max.20%)

New DTC

DTC

Trouble

Help

P1253

P1254

Minimum Rail Pressure
Control Malfunction (IMV
Fault)

Maximum Rail Pressure
Control Malfunction (IMV
Fault)

- Rail pressure faults: Too low

- Check the IMV wiring harness.

- Check the ECU wiring harness.

• Check the ECU pin #87 for open

and short.

- Check the high pressure fuel lines, fuel

rails and high pressure pipes for leaks.

- Check the rail pressure sensor.

• Supply voltage: 5 ± 0.1 V

• Output voltage at 1600 bar:

4.055 ±  0.125 V

• Output voltage at atmospheric

pressure: 0.5 ± 0.04 V

- Check the transfer pressure fuel

pressure lines.

• Check the fuel level in fuel tank.

Check the fuel system for air influx.

• Check the fuel filter specification.

- Check the IMV resistance: 5.44 

Ω

• When out of specified value: re-

place high pressure pump and IMV

- Replace the ECU if required.

- Rail pressure faults: Too high

- Check the IMV wiring harness.

- Check the ECU wiring harness.

• Check the ECU pin #87 for open

and short.

- Check the high pressure fuel lines, fuel

rails and high pressure pipes for leaks.

- Check the rail pressure sensor.

• Supply voltage: 5 ± 0.1 V

• Output voltage at 1600 bar:

4.055 ± 0.125 V

• Output voltage at atmospheric

pressure: 0.5 ± 0.04 V

- Check the transfer pressure fuel

pressure lines.

• Check the fuel level in fuel tank.

Check the fuel system for air influx.

• Check the fuel filter specification.

- Check the IMV resistance: 5.44 

Ω

• When out of specified value: re-

place high pressure pump and IMV

- Replace the ECU if required.

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

41

DIAGNOSIS

ECU

BRAKE

ECU

TCU

A/BAG

TC

RK-STICS

FFH

R/SENSOR

FA

T

C

TGS-LEVER

P/TRUNK

CCCS

Limp

Home

Mode

Immedi-

ately

Engine Stop

Delayed

Engine

Stop

Torque

Reduction

(max.50%)

Torque

Reduction

(max.20%)

New DTC

DTC

Trouble

Help

P1256

P1257

Too Small Transfer
Pressure Fuel in Rail
Pressure System

Too Large Transfer
Pressure Fuel in Rail
Pressure System

- Rail pressure fault: IMV current trim

too high, drift.

- Check the IMV wiring harness.

- Check the ECU wiring harness.

• Check the ECU pin #87 for open

and short.

- Check the rail pressure sensor.

• Supply voltage: 5 ± 0.1 V

• Output voltage at 1600 bar:

4.055 ± 0.125 V

• Output voltage at atmospheric

pressure: 0.5 ± 0.04 V

- Check the transfer pressure fuel

pressure lines.

• Check the fuel level in fuel tank.

Check the fuel system for air influx.

• Check the fuel filter specification.

- Check the high pressure fuel system.

• Check the fuel rails and high

pressure pipes for leaks.

- Check the IMV resistance: 5.44 

Ω

• When out of specified value: re-

place high pressure pump and IMV

- Replace the ECU if required.

- Rail pressure fault: IMV current trim

too high, drift.

- Check the IMV wiring harness.

- Check the ECU wiring harness.

• Check the ECU pin #87 for open

and short.

- Check the rail pressure sensor.

• Supply voltage: 5 ± 0.1 V

• Output voltage at 1600 bar:

4.055 ± 0.125 V

• Output voltage at atmospheric

pressure: 0.5 ± 0.04 V

- Check the transfer pressure fuel

pressure lines.

• Check the fuel level in fuel tank.

Check the fuel system for air influx.

• Check the fuel filter specification.

- Check the high pressure fuel system.

• Check the fuel rails and high

pressure pipes for leaks.

- Check the IMV resistance: 5.44 

Ω

• When out of specified value: re-

place high pressure pump and IMV

- Replace the ECU if required.

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

42

DIAGNOSIS

ECU

Limp

Home

Mode

Immedi-

ately

Engine Stop

Delayed

Engine

Stop

Torque

Reduction

(max.50%)

Torque

Reduction

(max.20%)

New DTC

DTC

Trouble

Help

P1258

P1259

Too Small High Pressure
Fuel in Rail Pressure
System

Too Large High Pressure
Fuel in Rail Pressure
System

- Rail pressure fault: IMV current trim

too high, drift.

- Check the IMV wiring harness.

- Check the ECU wiring harness.

• Check the ECU pin #87 for open

and short.

- Check the rail pressure sensor.

• Supply voltage: 5 ± 0.1 V

• Output voltage at 1600 bar:

4.055 ± 0.125V

• Output voltage at atmospheric

pressure: 0.5 ± 0.04 V

- Check the transfer pressure fuel lines.

• Check the fuel level in fuel tank.

Check the fuel system for air influx.

• Check the fuel filter specification.

- Check the high pressure fuel system.

• Check the fuel rails and high

pressure pipes for leaks.

- Check the IMV resistance: 5.44 

Ω

• When out of specified value: re-

place high pressure pump and IMV

- Replace the ECU if required.

- Rail pressure fault: IMV current trim

too high, drift.

- Check the IMV wiring harness.

- Check the ECU wiring harness.

• Check the ECU pin #87 for open

and short.

- Check the rail pressure sensor.

• Supply voltage: 5 ± 0.1 V

• Output voltage at 1600 bar:

4.055 ± 0.125 V

• Output voltage at atmospheric

pressure: 0.5 ± 0.04 V

- Check the transfer pressure fuel lines.

• Check the fuel level in fuel tank.

Check the fuel system for air influx.

• Check the fuel filter specification.

- Check the high pressure fuel system.

• Check the fuel rails and high

pressure pipes for leaks.

- Check the IMV resistance: 5.44 

Ω

• When out of specified value: re-

place high pressure pump and IMV

- Replace the ECU if required.

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

43

DIAGNOSIS

ECU

BRAKE

ECU

TCU

A/BAG

TC

RK-STICS

FFH

R/SENSOR

FA

T

C

TGS-LEVER

P/TRUNK

CCCS

Limp

Home

Mode

Immedi-

ately

Engine Stop

Delayed

Engine

Stop

Torque

Reduction

(max.50%)

Torque

Reduction

(max.20%)

New DTC

DTC

Trouble

Help

P1260

Too high IMV Driving
Current

- Abnormal rail pressure, IMV

CURRENT TRIM TOO HIGH, DRIFT

- Check the IMV wiring harnesses.

- Check the ECU wiring harnesses.

• Check ECU's pin A76 for open

and short.

- Check the Rail pressure sensor.

• Supply voltage: 5 ± 0.1V

• Output voltage at 1600 bar:

4.055 ± 0.125V

• Output voltage at atmospheric

pressure: 0.5 ± 0.04V

- Check low-pressure fuel system.

• Check fuel in fuel reservoir and

air penetration.

• Check fuel filter's specification.

- Check high-pressure fuel system.

• Check fuel rail and high-

pressure pipe for leaks.

- Check IMV's resistance (5.44 

Ω).

• If the resistance is out of

specification, replace the high-
pressure pump and IMV.

P1286

Low Resistance for Injec-
tor #1 wiring harness

- Out of range about wiring harness

resistance for Injector #1.

• Low: Less than 0.150 

Ω

(injector circuit open)

- Check the injector #1 wiring

harness and electric isolation.

- Check the injector #1 wiring

harness for open circuit.

• If the pin in injector #1 is defective,

replace injector #1 and perform
C2I coding, then check again.

• If the pin in injector #1 is not

defective, check the ECU wiring
harness.

- Replace the ECU if required.

P1287

High Resistance for Injec-
tor #1 wiring harness

- Out of range about wiring harness

resistance for Injector #1.

• High: More than 0.573 

Ω (injector

circuit short)

- Check the injector #1 wiring

harness and electric isolation.

- Check the injector #1 wiring

harness for short circuit.

• If the trouble still exists after

removing the injector connector,
replace injector #1 and perform
C2I coding, then check again.

• If the trouble is fixed after

removing the injector connector,
check the wiring harness
between ECU and injector.

- Replace the ECU if required.

 

 

 

 

 

 

 

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