SsangYong Rexton. Manual - part 434

M161 ENGINE CONTROLS  1F2-57

SSANGYONG  Y200

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.

Temperature (°C)

20

80

100

Specified Value (

Ω

Ω

Ω

Ω

Ω

)

2,500

322

185

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

SSANGYONG  Y200

1F2-58  M161 ENGINE CONTROLS

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 theThrottle 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 APP 1 or APP 2 sensor is defected condition, the engineis 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 adefault 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 servomotor 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 will  opening (On/Off) time of injector. The engine rpm will be maintaining 900 rpm (at idle) to 1,800
according to the engine load.

ACCELERATOR PEDAL MODULE

YAD1F480

1 Accelerator Pedal
2 Accelerator Pedal Sensor
3 Bolts

4 6-Pin Connector
5 Kick-down Switch
6 Nut

M161 ENGINE CONTROLS  1F2-59

SSANGYONG  Y200

YAD1F490

Circuit Description

The ECM supplies a 5 or 2.5 volt reference signal and a ground to the APP sensor 1 or 2. The ECM calculates on
these signal lines. The APP sensor output changes as the accelerator pedal is moved. The output of the APP 1
and APP 2 sensor are low, about 0.4 ~ 0.7 volts and 0.2 ~ 0.35 volts respectively at the closed throttle position.
As pushing the accelerator pedal, the output increases so that the output voltages will be about 4.3 ~ 4.8 volts
and 2.1 ~ 2.4 volts individually when accelerating fully with the kick down, at Wide Open Throttle (WOT).

Failure

Code

Description

Trouble  Area

Maintenance Hint

Acceleration pedal

position sensor signal

failure

Acceleration pedal

position 1 sensor low

voltage

Acceleration pedal

position sensor 1 high

voltage

Acceleration pedal

position sensor 2 low

voltage

Acceleration pedal

position sensor 2 high

voltage

Accelerator pedal

position sensor 1 not

plausible with

accelerator pedal

position sensor 2

Both setpoint

accelerator pedal

position sensor defective

When malfunction of APP

sensor

APP 1 sensor short circuit to

ground or open

APP 1 sensor short circuit to

power

APP 2 sensor short circuit to

ground or open

APP 2 sensor short circuit to

power

When difference between

APP 1 sensor and APP 2

sensor

When defective of both APP

sensor

•

Monitoring the actual values through
scan tool

•

Inspection the ECM pin 31, 47, 32, 48,
59, 51 about short circuit or open with
bad contact

•

Inspection the APP sensor

•

Inspection the ECM

122

160

161

162

163

164

167

SSANGYONG  Y200

1F2-60  M161 ENGINE CONTROLS

Acceleration Pedal Position Sensor 1 Inspection

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

2. Measure the signal voltage between the ECM pin No. 47 and No. 31 while operating the accelerator pedal as

following conditions.

•

Not depress the pedal (closed throttle position)

•

Fully depress the pedal (full throttle with kick down)

Condition of Throttle

Valve

Closed Throttle Valve

Fully Depressed Throttle

Valve

Specified Value (V)

0.3 ~ 0.7

4.3 ~ 4.8

Notice:  If measured value is not within the specified value, check the pedal valve sensor and the supply
voltage to APP 1 sensor.

Acceleration Pedal Position Sensor 2 Inspection

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

2. Measure the signal voltage between the ECM pin No. 48 and No. 50 while operating the accelerator pedal as

following conditions.

•

Not depress the pedal (closed throttle position)

•

Fully depress the pedal (full throttle with kick down)

Condition of Throttle

Valve

Closed Throttle Valve

Fully Depressed Throttle

Valve

Specified Value (V)

0.1 ~ 0.4

2.1 ~ 2.5

Notice:  If measured value is not within the specified value, check the pedal valve sensor and the supply
voltage to APP sensor 2.