SsangYong Stavic / SsangYong Rodius (2005 year). Service manual - part 52

1F-49

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE CONTROLS

M162 GSL ENG SM - 2005.7

Specified Value (V)

3.57

1.22

0.78

Circuit Description

The ECT sensor uses a thermistor to control the signal voltage to the ECM. The ECM supplies a voltage on the signal
circuit to the sensor. When the engine coolant is cold, the resistance is high; therefore the ECT signal voltage will be high.

Engine Coolant Temperature Sensor Inspection

1. Turn the ignition switch to “ON” position.

2. Measure the voltage between the ECM pin No. 78 and No. 79.

Temperature (°C)

20

80

100

Failur Code

Description

Trouble Area

Maintenance Hint

• Monitoring the actual coolant

temperature through scan tool

• Inspection the ECM pin 78, 79

about short circuit or open with
bad contact

• Inspection the ECT sensor

• Inspection the ECM

Engine coolant

temperature sensor low

voltage

ECT sensor short circuit to

ground or open

00

Engine coolant

temperature sensor

high voltage

ECT sensor short circuit to

power

01

Engine coolant

temperature sensor

plausibility

Malfunction in recognition of ECT

When drop to about 50°C below

after warm up

02

Engine coolant

temperature insufficient

for closed loop fuel

control

Malfunction in recognition of ECT

When minimum temperature for

lambda control after warm up

06

1F-50

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE CONTROLS

M162 GSL ENG SM - 2005.7

3. Turn the ignition switch to “OFF” position.

4. Disconnect the ECT sensor connector.

5. Turn the ignition switch to “ON” position.

6. Measure the resistance between the ECT sensor terminal pin No. 1 and No. 4.

Notice

Replace wiring and coolant temperature sensor if out of specified value.

Specified Value (V)

2,500

322

185

Temperature (°C)

20

80

100

1F-51

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE CONTROLS

M162 GSL ENG SM - 2005.7

ACCELERATOR PEDAL MODULE

The Acceleration Pedal Position (APP) sensor is mounted on the accelerator pedal assembly. The sensor is actually
two individual APP sensors and one housing. This sensor works with the Throttle Position (TP) sensor to provide input
to the Engine Control Module (ECM) regarding driver requested accelerator pedal and throttle angle at the throttle body.

When the APP Sensor is Defected

When the APP1 or APP 2 sensor is defected condition, the engine is still running at idle condition but, the accelerator
pedal reaction is not response correctly and also, the engine rpm will be reacted to 4,000 rpm slowly. If the APP 1
sensor is out of order, the APP 2 sensor will be conducted with signal as a default signal but, the throttle valve opening
is limited 60% and delayed opening speed.

When the TP Sensor or Servo Motor is Defected

When the TP 1, 2 sensor or servo motor is defected condition, the throttle valve will be closed to the spring capsule by
spring force, at this condition, the throttle valve will open 10° ~ 20°and engine rpm will be controlled by ECM with opening
(ON/OFF) time of injector. The engine rpm will be maintaining 900 rpm (at idle) to 1,800 according to the engine load.

1. Accelerator pedal

2. Accelerator pedal sensor

3. Bolts

4. 6-pin connector

5. Bolt

1F-52

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE CONTROLS

M162 GSL ENG SM - 2005.7

Failur Code

Description

Trouble Area

Maintenance Hint

• Monitoring the actual values

through scan tool

• Inspection the ECM pin 31, 47,

32, 48, 59, 51 about short circuit
or open with

• Inspection the APP sensor

• Inspection the ECM

Acceleration pedal

position sensor signal

failure

When malfunction of APP

sensor

122

Acceleration pedal

position 1 sensor low

voltage

APP 1 sensor short circuit to

ground or open

160

Acceleration pedal

position sensor 1 high

voltage

APP 1 sensor short circuit to

power

161

Acceleration pedal

position sensor 2 low

voltage

APP 2 sensor short circuit to

ground or open

162

Acceleration pedal

position sensor 2 high

voltage

APP 2 sensor short circuit to

power bad contact

163

Accelerator pedal

position sensor 1 not

plausible with

accelerator pedal
position sensor 2

When difference between APP 1

sensor and APP 2 sensor

164

Both setpoint

accelerator pedal

position sensor

defective

When defective of both APP

sensor

167