P1109 Booster Pressure Sensor Initial Check Fault; P0571 Brake Pedal Switch Fault - SSANGYONG 2004 Rexton 2.7XDi Workshop Manual

DI10-34
DTC Trouble
P1109 Booster Pressure Sensor
Initial Check Fault
P0571 Brake Pedal Switch Fault
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
Help
- Implausible signal values or range about
boost pressure sensor at Engine run-
ning condition (Higher than specified
values).
- Check the supply voltage to sensor.
- Actual boost pressure vs. Output volt-
ages
• Raw Signal Range: 0.545 ~ 2.490 bar
• 0.4 bar: 0.6120 V
• 1.4 bar: 2.6520 V
• 2.4 bar: 4.6920 V
- Check the sensor wiring harness for
ECU pin #99 and #100 (open, poor
contact).
- Visually check sensor and replace if
required.
- Replace the ECU if required.
- Check whether existing or not about
turbo boosting control malfunction
(P1235) simultaneously.
- If there is turbo boost control fault,
Should be checked followings also;
• Leakage before turbo system
• Vacuum pump malfunction
• Waste gate' solenoid valve
• Turbo charger system defect or mal-
function itself
• Air inlet restriction
• Exhaust system restriction
- The brake pedal switch or light switch
is faulty.
• Brake pedal switch: Normal Close
(NC)
• Light switch: Normal Open (NO)
• When operating the brake switch,
one signal (NO) is sent to auto
cruise and the other (NC) is sent to
brake lamp.
- Check the brake and light switch wir-
ing harness.
- Check the supply voltage to brake and
light switch (12 V).
- Check the brake and light switch for
contact.
- Check the ECU wiring harness for ECU
pin #77 and #58 (short, poor contact).
- Replace the ECU if required.
Torque Torque Delayed
Reduction Reduction Engine
(max.50%) (max.20%) Stop
Immediately Limp
Engine Home
Stop Mode
DIAGNOSIS
DI ENG SM - 2004.4