P0117 Coolant Temperature Sensor Malfunction - Open; P0685 Main Relay Malfunction; P1405 Egr Solenoid Valve Malfunction - Short To Ground; P1406 Egr Solenoid Valve Malfunction - Short To+Batt - SSANGYONG 2004 Rexton 2.7XDi Workshop Manual

DI10-40
DTC Trouble
P0117 Coolant Temperature Sen-
sor Malfunction - Open
P0115 Supply Voltage Fault to
Coolant Temperature Sen-
sor
P0685 Main Relay Malfunction
P1405 EGR Solenoid Valve
Malfunction - Short to
ground
P1406 EGR Solenoid Valve
Malfunction - Short to
+Batt
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
Help
- Malfunction in recognition of coolant
temperature
• Less than minimum values (Circuit
Open)
• External power supply malfunction
- If Fuel temperature is invalid, the previ-
ous coolant temperature is retained.
- Check the supply voltage to sensor.
- Actual air temp. vs. Resistance
• 20°C: 2449 Ω
• 50°C: 826.3 Ω
• 80°C: 321.4 Ω
• 100°C: 112.9 Ω
- Check the wiring harness (open and
poor contact).
• ECU pin #101 and #102
- Visually check the sensor and replace
if required.
- Replace the ECU if required.
- Check if the supply voltage of approx.
12 V is applied.
- The the main relay is unexpectedly
high/low state (ECU is supplied after 3
seconds).
- Relay resistance: 92 ± 9 Ω (at 20°C)
- Check the relay wiring harness (open,
short and poor contact).
• Check for open and short: ECU pin #9.
- If the forced operation is not available,
replace the ECU.
- Out of range about EGR gas: High.
• EGR controller circuit: Open or short
to ground
- Check the EGR actuator wiring harness.
- Check the supply voltage to EGR sole-
noid valve.
- Check the EGR solenoid valve.
- Check the EGR valve for stick.
- Check the resistance of EGR actuator:
15.4 Ω.
- Check the ECU wiring harness for open
and short.
• ECU pin #96
- Out of range about EGR gas: Low.
• EGR controller circuit: Short to battery
- Check the EGR actuator wiring harness.
- Check the supply voltage to EGR sole-
noid valve.
- Check the EGR solenoid valve.
- Check the EGR valve for stick.
- Check the resistance of EGR actuator:
15.4 Ω
- Check the ECU wiring harness for open
and short.
• ECU pin #96
Torque Torque Delayed
Reduction Reduction Engine
(max.50%) (max.20%) Stop
Immediately Limp
Engine Home
Stop Mode
DIAGNOSIS
DI ENG SM - 2004.4