SSANGYONG 2004 Rexton 2.7XDi Workshop Manual page 412

DI10-52
DTC Trouble
P1191 Pressure Build Up - Too
Slow
P0255 IMV Driver Circuit Malfunc-
tion - Open
P0251 IMV Driver Circuit Malfunc-
tion - Short
P0253 IMV Driver Circuit Malfunc-
tion - Short to Ground
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
Help
- The pressure build up during cranking
is too slow.
- 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 pres-
sure pipes for leaks.
- Check the IMV resistance: 5.44 Ω
• When out of specified value: replace
high pressure pump and IMV
- Replace the ECU if required.
- IMV driver circuit malfunction: Open
- Check the IMV wiring harness.
• Check the ECU pin #87 for open.
- Check the ECU wiring harness.
- Check the IMV resistance.
• When out of specified value: replace
high pressure pump and IMV
- Replace the ECU if required.
- IMV driver circuit malfunction: Short
- Check the IMV wiring harness.
• Check the ECU pin #87 for short.
- Check the ECU wiring harness.
- Check the IMV resistance.
• When out of specified value: replace
high pressure pump and IMV
- Replace the ECU if required.
- IMV driver circuit malfunction: Short to
ground
- Check the IMV wiring harness.
• Check the ECU pin #87 for short to
ground.
- Check the ECU wiring harness.
- Check the IMV resistance.
• When out of specified value: replace
high pressure pump and IMV
- Replace the ECU if required.
Torque Torque Delayed
Reduction Reduction Engine
(max.50%) (max.20%) Stop
O
O
O
Immediately Limp
Engine Home
Stop Mode
O
O
O
DIAGNOSIS
DI ENG SM - 2004.4