SSANGYONG 2004 Rexton 2.7XDi Workshop Manual page 416

DI10-56
DTC Trouble
P1252 Too High IMV Pressure
P1120 Accelerator Pedal Sensor
#1 Malfunction
P1121 Accelerator Pedal Sensor
#2 Malfunction
P1122 Accelerator Pedal Sensor
Malfunction (Limp Home
Mode)
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
Help
- The rail pressure is excessively high.
- 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.
- The potentiometer 1 is not plausible
with potentiometer 2.
- Check the supply voltage to sensor.
- Check the wiring harness.
• Check the ECU pin #72, 53 and #32,
14 for open and short.
- Check the accelerator pedal module.
- Check the ECU wiring harness.
- Replace the ECU if required.
- The potentiometer 1 is not plausible
with potentiometer 2.
- Check the supply voltage to sensor.
- Check the wiring harness.
• Check the ECU pin #72, 53 and #32,
14 for open and short.
- Check the accelerator pedal module.
- Check the ECU wiring harness.
- Replace the ECU if required.
- When triggering limp home mode.
- Check the supply voltage to sensor.
- Check the wiring harness.
• Check the ECU pin #72, 71, 53 and
#57, 32, 14 for open and short.
- Check the accelerator pedal module.
- Check the ECU wiring harness.
- Replace the ECU if required.
Torque Torque Delayed
Reduction Reduction Engine
(max.50%) (max.20%) Stop
O
O
Immediately Limp
Engine Home
Stop Mode
DIAGNOSIS
DI ENG SM - 2004.4