SsangYong: Engine Euro 4. Service manual - part 56

 

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SsangYong: Engine Euro 4. Service manual - part 56

 

 

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

12

DIAGNOSIS

ECU

Limp

Home

Mode

Immedi-

ately

Engine Stop

Delayed

Engine

Stop

Torque

Reduction

(max.50%)

Torque

Reduction

(max.20%)

New DTC

DTC

Trouble

Help

P0112

Intake Air Temperature Cir-
cuit Malfunction - Open

- The intake air temperature sensing

value is lower than maximum value
of 150°C: Open

- Check the supply voltage to sensor.

• Actual air temperature vs. Voltages

• 20°C: 2.65 

Ω

• 30°C: 2.18 

Ω

• 50°C: 1.40 

Ω

• Recovery values when intake air

temperature sensor failure: 50°C

- Check the sensor wiring harness.

• Check the source power circuit

for short to ground.

- Check the sensor resistance.

• Actual air temperature vs. Resis-

tance

• -40°C: 39.260 

Ω

• -20°C: 13.850 

Ω

• 0°C: 5.499 

Ω

• 20°C: 2.420 

Ω

• 40°C: 1.166 

Ω

• 60°C: 0.609 

Ω

• 80°C: 0.340 

Ω

• 100°C: 0.202 

Ω

• 120°C: 0.127 

Ω

• Recovery values when intake air

temperature sensor failure: 50°C

- Check the ECU wiring harness.

• Check the ECU pin #64 and #84

for open.

- Replace the ECU if required.

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

13

DIAGNOSIS

ECU

BRAKE

ECU

TCU

A/BAG

TC

RK-STICS

FFH

R/SENSOR

FA

T

C

TGS-LEVER

P/TRUNK

CCCS

Limp

Home

Mode

Immedi-

ately

Engine Stop

Delayed

Engine

Stop

Torque

Reduction

(max.50%)

Torque

Reduction

(max.20%)

New DTC

DTC

Trouble

Help

P0113

Intake Air Temperature Cir-
cuit Malfunction - Short

- The intake air temperature sensing

value is lower than maximum value
of 150°C: Open

- Check the supply voltage to sensor.

• Actual air temperature vs. Voltages

• 20°C: 2.65 

Ω

• 30°C: 2.18 

Ω

• 50°C: 1.40 

Ω

• Recovery values when intake air

temperature sensor failure: 50°C

- Check the sensor wiring harness.

• Check the source power circuit

for short to ground.

- Check the sensor resistance.

• Actual air temperature vs. Resis-

tance

• -40°C: 39.260 

Ω

• -20°C: 13.850 

Ω

• 0°C: 5.499 

Ω

• 20°C: 2.420 

Ω

• 40°C: 1.166 

Ω

• 60°C: 0.609 

Ω

• 80°C: 0.340 

Ω

• 100°C: 0.202 

Ω

• 120°C: 0.127 

Ω

• Recovery values when intake air

temperature sensor failure: 50°C

- Check the ECU wiring harness.

• Check the ECU pin #64 and #84

for open.

- Replace the ECU if required.

P0115

Supply Voltage Fault to
Coolant Temperature
Sensor

- Check if the supply voltage of

approx. 12 V is applied.

P0117

Coolant Temperature
Sensor Malfunction -
Open

- Malfunction in recognition of coolant

temperature

• Less than minimum values

(Circuit Open)

• External power supply malfunction

- If Fuel temperature is invalid, the pre-

vious 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.

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

14

DIAGNOSIS

ECU

Limp

Home

Mode

Immedi-

ately

Engine Stop

Delayed

Engine

Stop

Torque

Reduction

(max.50%)

Torque

Reduction

(max.20%)

New DTC

P0122

P0123

Accelerator Pedal Sensor
#1 Malfunction - Open

Accelerator Pedal Sensor
#1 Malfunction - Short

- Out of range about potentiometer 1

of pedal sensor: lower than
specified values

- Check the supply voltage to sensor.

- Check the wiring harness.

• Check the circuit for open and short.

• Check the ECU pin #71, #53 for

open and poor contact.

- Check the accelerator pedal.

- Check the ECU wiring harness.

- Replace the ECU if required.

- Out of range about potentiometer 1

of pedal sensor: higher than
specified values

- Check the supply voltage to sensor.

- Check the wiring harness.

• Check the circuit for open and short.

• Check the ECU pin #71, #53 for

short and poor contact.

- Check the accelerator pedal.

- Check the ECU wiring harness.

- Replace the ECU if required.

DTC

Trouble

Help

P0118

Coolant Temperature Sen-
sor Malfunction - Short

- Malfunction in recognition of coolant

temperature

• More than maximum values

(Circuit Short)

• External power supply malfunc-

tion

- If Fuel temperature is invalid, the pre-

vious 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 (short

and poor contact).

• ECU pin #101 and #102

- Visually check the sensor and

replace if required.

- Replace the ECU if required.

P0120

Accelerator Pedal Sensor
#1 Malfunction - Supply
Voltage Fault

O

- The supply voltage is faulty.

- Check the supply voltage to sensor.

- Check the wiring harness.

• Check the circuit for open and short.

• Check the ECU pin #72, #53 for

open and short.

- Check the accelerator pedal.

- Check the ECU wiring harness.

- Replace the ECU if required.

O

O

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

15

DIAGNOSIS

ECU

BRAKE

ECU

TCU

A/BAG

TC

RK-STICS

FFH

R/SENSOR

FA

T

C

TGS-LEVER

P/TRUNK

CCCS

Limp

Home

Mode

Immedi-

ately

Engine Stop

Delayed

Engine

Stop

Torque

Reduction

(max.50%)

Torque

Reduction

(max.20%)

New DTC

DTC

Trouble

Help

P0147

P0148

P0171

P0172

P0173

P0174

P0175

Impossible to Learn Idle
MDP

Impossible to Learn
Drive MDP

Insufficient MDP of
Injector #1

Insufficient MDP of
Injector #2

Insufficient MDP of
Injector #3

Insufficient MDP of
Injector #4

Insufficient MDP of
Injector #5

- Causes (Idle range MDP learning)

• The MDP is not learned again

until driving over 50,000 km after
the MDP is learned.

- Conditions for MDP learning (Idle)

• Leaning twice for each cylinder

(attempt every 5 sec.)

• Initial MDP learning: coolant

temperature > 60°C

• Fuel temperature: 0 ~ 80°C

• Vehicle speed: Idle.

• The tachometer's needle

vibrates while learning idle MDP.

• Replace ECU after learning.

- Causes

• It occurs twice for each cylilnder

if MDP is not learned again until
driving over 50,000 km after the
MDP is learned.

- Actions

• Check knock sensor and wiring.

• Check injector specification.

• Check C3I/C2I.

- MDP learning value is decreased

due to aged injector #1.

- MDP learning value is decreased

due to aged injector #2.

- MDP learning value is decreased

due to aged injector #3.

- MDP learning value is decreased

due to aged injector #4.

- MDP learning value is decreased

due to aged injector #5.

P0180

Fuel Temperature
Sensor - Malfunction

- The power source circuit is faulty for

fuel temperature sensor. (Fuel tem-
perature sensor is mounted in high
pressure pump)

- Actual fuel temp. vs. Resistance

• -40°C: 75.780 

Ω -20°C: 21.873 Ω

• -10°C: 12.462 

Ω 0°C: 7.355 Ω

• 10°C: 4.481 

Ω

20°C: 2.812 

Ω

• 25°C: 2.252 

Ω

30°C: 1.814 

Ω

• 40°C: 1.199 

Ω

50°C: 0.811 

Ω

• 70°C: 0.394 

Ω

90°C: 0.206 

Ω

• 120°C: 0.087 

Ω

- Recovery values when fuel

temperature sensor failure: 95°C

- Check the supply voltage to sensor.

- Check the wiring harness for open,

short and poor contact.

• ECU pin: #109, #110

- Check the ECU wiring and replace

the ECU if required.

 

 

 

 

 

 

 

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