SsangYong Korando II (1996-2006 year). Manual — part 122
1F2 -- 68 M161 ENGINE CONTROLS
DAEWOO MY_2000
ACCELERATOR PEDAL MODULE
YAA1F620
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 APP 1 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 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.
M161 ENGINE CONTROLS 1F2 -- 69
DAEWOO MY_2000
KAB1F270
Failure
Code
Description
Trouble Area
Maintenance Hint
122
Acceleration pedal
position sensor signal
failure
When malfunction of APP
Sensor
160
Acceleration pedal
position 1 sensor low
voltage
APP 1 sensor short circuit to
ground or open
161
Acceleration pedal
position sensor 1 high
voltage
APP 1 sensor short circuit to
power
D
Monitoring the actual values through
162
Acceleration pedal
position sensor 2 low
voltage
APP 2 sensor short circuit to
ground or open
Monitoring the actual values through
scan tool
D
Inspection the ECM pin 31, 47, 32, 48,
59, 51 about short circuit or open with
bad contact
163
Acceleration pedal
position sensor 2 high
voltage
APP 2 sensor short circuit to
power
bad contact
D
Inspection the APP sensor
D
Inspection the ECM
164
Accelerator pedal
position sensor 1 not
plausible with
accelerator pedal
position sensor 2
When difference between
APP 1 sensor and APP 2
sensor
167
Both setpoint
Accelerator pedal
position sensor defective
When defective of both APP
sensor
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).
1F2 -- 70 M161 ENGINE CONTROLS
DAEWOO MY_2000
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 follow-
ing conditions.
D
Not depress the pedal (closed throttle position)
D
Fully depress the pedal (full throttle with kick down)
Condition of Throttle Valve
Specified Value (V)
Closed Throttle Valve
0.3 ~ 0.7
Fully Depressed Throttle Valve
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 follow-
ing conditions.
D
Not depress the pedal (closed throttle position)
D
Fully depress the pedal (full throttle with kick down)
Condition of Throttle Valve
Specified Value (V)
Closed Throttle Valve
0.1 ~ 0.4
Fully Depressed Throttle Valve
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.
M161 ENGINE CONTROLS 1F2 -- 71
DAEWOO MY_2000
BLANK
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