Hyundai Santa Fe (2006 year). Manual — part 472
FL -498
FUEL SYSTEM
DTC P2128 THROTTLE/PEDAL POSITION SENSOR/SWITCH "E" CIRCUIT
HIGH INPUT
COMPONENT LOCATION
E004DBE2
Refer to DTC P2123.
GENERAL DESCRIPTION
EA08D8FF
Refer to DTC P2123.
DTC DESCRIPTION
E8F8F8E8
P2128 is set when output voltage of APS 2 is above the maximum value of 2.463V for more than 0.18 sec. This code is
due to the short to battery in APS 2 power circuit and signal circuit or open in sensor ground circuit.
DTC DETECTING CONDITION
E25721DC
Item
Detecting Condition
Possible Cause
DTC Strategy
• Voltage monitoring
Enable Conditions
• IG KEY "ON"
Threshold Value
• When output signal is above the maximum
value (above 2.463V)
Diagnostic Time
• 0.18 sec.
Fuel cut
NO
EGR Off
NO
Fuel Limit
YES
Fail Safe
Check
Lamp
YES
• APS standard value is 0%.
• Limp home idle is fixed
at (1200RPM)
• A/C operation stops
according to Vehicle/Engine
speed
• Cruise control deactivated
(for Cruise control option
applied vehicle)
• APS 2 Circuit
• APS component
SPECIFICATION
E2D40DF9
Refer to DTC P2123.
SCHEMATIC DIAGRAM
E6DC1215
Refer to DTC P2123.
SIGNAL WAVEFORM AND DATA
E345F746
Refer to DTC P2123.
MONITOR SCANTOOL DATA
E646E8EC
Refer to DTC P2123.
DTC TROUBLESHOOTING PROCEDURES
FL -499
TERMINAL AND CONNECTOR INSPECTION
EF3928C7
Refer to DTC P2123.
POWER CIRCUIT INSPECTION
EEBAE6DF
1.
IG KEY "OFF", ENGINE "OFF"
2.
Disconnect APS connector.
3.
IG KEY "ON"
4.
Measure the voltage of terminal 1 of APS connector.
Specification : 4.8V~5.1V
5.
Is the measured voltage within the specification?
YES
▶
Go to "Signal Circuit Inspection".
NO
▶
If the measured voltage is not within the specified value, find and repair short to battery in APS 2 power circuit and
go to "Verification of Vehicle Repair".
SIGNAL CIRCUIT INSPECTION
EF45BD9E
1.
Check open in signal circuit
1)
IG KEY "OFF", ENGINE "OFF"
2)
Disconnect APS connector and ECM connector.
3)
Check continuity between APS connector terminal 3 and ECM connector (C230-K) terminal 31.
Specification : Continuity (below 1.0
Ω
)
4)
Is the measured resistance within the specification?
YES
▶
Go to "Check short to battery in signal circuit" as follows.
NO
▶
Repair open in signal circuit and go to "Verification of Vehicle Repair".
2.
Check short to battery in signal circuit
1)
IG KEY "OFF", ENGINE "OFF"
2)
Disconnect APS connector and ECM connector.
3)
IG KEY "ON"
4)
Measure the voltage of terminal 3 of APS connector.
FL -500
FUEL SYSTEM
Specification : 0.0V~0.1V
5)
Is abnormal voltage detected in signal circuit with both connector disconnected?
YES
▶
Repair short to battery and go to "Verification of Vehicle Repair".
NO
▶
Go to "Ground Circuit Inspection".
GROUND CIRCUIT INSPECTION
E31BE44D
1.
IG KEY "OFF", ENGINE "OFF"
2.
Disconnect APS connector.
3.
IG KEY "ON"
4.
Measure the voltage of APS terminal 1. [ TEST "A" ]
5.
Measure the voltage of APS terminal 1 and terminal 6. [ TEST "B" ]
( terminal 1 : Check + prove , terminal 6 : Check - prove )
Specification : [TEST "A"] Voltage - [TEST "B"] Voltage = below 200mV
6.
Is the measured voltage within the specification?
YES
▶
Go to "Component Inspection".
NO
▶
When "B" voltage is not detected : Repair open in ground circuit and go to "Verification of Vehicle Repair".
▶
When the voltage difference between "A" and "B" is above 200mV : Eliminate the causes of excessive resistance
and go to "Verification of Vehicle Repair".
COMPONENT INSPECTION
E186656E
1.
IG KEY "OFF", ENGINE "OFF".
2.
Disconnect APS connector (C256).
3.
Check resistance for each terminal refering to Resistance characteristic table.
DTC TROUBLESHOOTING PROCEDURES
FL -501
SPECIFICATION : RESISTANCE CHARACTERISTIC TABLE FOR EACH TERMINAL
Resistance( K
Ω
20
℃
)
checking point
Pedal
Depressed
Pedal released
Characteristic
Component Connector
Shape
4(power)-
5(ground)
1.0±0.1K
Ω
1.0±0.1K
Ω
Unchanged
4(power)-
2(signal)
1.8±0.1K
Ω
1.1±0.1K
Ω
Resistance drops
APS 1
2(signal)-
5(ground)
1.1±0.1K
Ω
1.8±0.1K
Ω
Resistance rises
1(power)-
6(ground)
2.0±0.1K
Ω
2.0±0.1K
Ω
Unchanged
1(power)-
3(signal)
2.9±0.1K
Ω
2.1±0.1K
Ω
Resistance drops
APS 2
3(signal)-
6(ground)
1.1±0.1K
Ω
1.8±0.1K
Ω
Resistance rises
SCMFL6395L
4.
Are resistances for each terminal measured correctly?
YES
▶
Go to "Verification of Vehicle Rapair".
NO
▶
Replace APS and go to "Verification of Vehicle Rapair".
VERIFICATION OF VEHICLE REPAIR
EE983AD1
Refer to DTC P2123.
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