10445909

1.

Possible DTC: P1181

2.

Actual value for evaluation: Conform actual value of RPS

＊ CC-CODE

(1)

C005 (Max. pressure excceed)

C008 ( Actuator sticks in closed position)

A.

Possible causes of trouble :

Rail pressure sensor (RPS) defective

Pressure regulator valve defective

Injectors defective

High pressure pump defective

(2)

C006 (Min.pressure at low engine speed)

C009 (Leakage), C010 (Governor deviation at high engine speed)

A.

Possible causes of trouble :

Rail pressure sensor (RPS) defective

Pressure regulator valve defective

Injectors defective

High pressure pump defective

Leakage

3.

Any additionally stored faults are to be rectified first. Cancel the fault memory and then perform the test drive. Start by checking above-mentionedcomponents if fault code is stored again.

4.

Visually check the pipes, rail and connections for leakage.

5.

Check the low pressure circuit.

A.

Possible causes of trouble: Leakage, fuel filter clogged, electric fuel pump

(1)

Connect the pressure gauge between fuel filter and high pressure pump. Ignition on. Fuel pump delivery for 30 seconds.

Pressure ＞ 3.5 bar

Opening pressure at overflow valve of fuel filter is too high Replacle the valve

Pressure ＜ 1.5 bar

Block the hose between overflow valve and return flow collector

Pressure ＞ 3.5 bar

Overflow valve defective

Pressure ＜ 3.5 bar

Check the electric fuel pump

(2)

Connect the pressure gauge to the entire return fuel line toward the tank

Ignition on. (High pressure pump delivery)

Pressure ＜ 1 bar : Return line clogged

(3)

Connect the pressure gauge to upstream of filter

Ignition on. (High pressure pump delivery)

Pressure ＜ 2.8 bar : Filter or inlet clogged

6.

Check the high pressure circuit

A.

Possible causes of trouble: Leakage, rail pressure sensor, regulator, injectors,high pressure pump

(1)

Visually inspect for leakage and check all connectors

(2)

Block the fuel return line of function block

(3)

Pull off the electric connector of all injectors.

Connect the self-diagnosis tester (HI-SCAN)

(4)

Ignition on. Operate starting motor for 5 seconds

Actual value read out : Rail pressure

Actual value ＜ 150 bar :

High pressure pump defective