Hyundai Santa Fe (2006 year). Manual — part 440
FL -370
FUEL SYSTEM
DTC P0653 SENSOR REFERENCE VOLTAGE "B" CIRCUIT HIGH
GENERAL DESCRIPTION
E6E1BFEF
Refer to DTC P0652.
DTC DESCRIPTION
EBEA1843
P0653 is set when the voltage above 5.158V - maximum voltage of sensor power supply 2 generates from ECM - is
detected for more than 0.1 sec.. This code is due to the short to battery in sensor power circuit or the voltage problem
inside of ECM.
DTC DETECTING CONDITION
E1037AE3
Item
Detecting Condition
Possible Cause
DTC Strategy
• Voltage monitoring
Enable Conditions
• IG KEY "ON"
Threshold Value
• when the voltage is above the maximum voltage
of sensor power supply.(above 5.158V )
Diagnostic Time
• 0.1 sec.
Fuel cut
NO
EGR Off
NO
Fuel Limit
YES
Fail Safe
Check
Lamp
NO
• RPS power supply circuit
• APS 2 power supply circuit
• BPS power supply circuit
• ECM component
SPECIFICATION
E88D96CE
Refer to DTC P0652.
SCHEMATIC DIAGRAM
E9721A2D
Refer to DTC P0652.
DTC TROUBLESHOOTING PROCEDURES
FL -371
SIGNAL WAVEFORM AND DATA
E3F156DC
Fig.1
Fig.2
Fig.1) APS2 and RPS power supply signals are measured simultaneously. Check if the voltages are within the specification
( 4.8~5.1V) at IG KEY "ON".
Fig.2) BPS and RPS power supply signals are measured simultaneously. Check if the voltages are within the specification
( 4.8~5.1V) at IG KEY "ON".
RPS power
APS 2 power
RPS power
BPS power
LFIG347A
TERMINAL AND CONNECTOR INSPECTION
E40BAF73
Refer to DTC P0652.
POWER CIRCUIT INSPECTION
EF4E87F8
1.
Check power circuit voltage
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnector RPS connector, APS connector and BPS connector.
3)
IG KEY "ON".
4)
Measure the voltage of RPS connector terminal 1, APS connector terminal 1 and BPS terminal 2.
Specification : 4.8V~5.1V
5)
Is the measured voltage within the specification?
YES
▶
Go to "Component Inspection".
NO
▶
Go to "2. Check open in power circuit" as follows
2.
Check open in power circuit
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnector RPS connector, APS connector, BPS connector and ECM connector.
FL -372
FUEL SYSTEM
3)
Measure the registance between RPS connector terminal 1 and ECM connector(C230-A) terminal 28.
Measure the registance between APS connector terminal 1 and ECM connector(C230-K) terminal 46.
Measure the registance between BPS connector terminal 2 and ECM connector(C230-A) terminal 13.
Specification : Continuity (below 1.0
Ω
)
4)
Is the measured resistance within the specification?
YES
▶
Go to "3. Check short to battery in power circuit" as follows.
NO
▶
Repair open in power circuit and go to "Verification of Vehicle Repair".
3.
Check short to battery in power circuit
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnector RPS connector, APS connector, BPS connector and ECM connector.
3)
IG KEY "ON".
4)
Measure the voltage between RPS connector terminal 1 or APS connector terminal 1 or BPS connector terminal
2 and chassis ground.
Specification : 0.0V~0.1V
5)
Is the measured voltage within the specification?
YES
▶
If the circuit is insulated well and the sensor power supply from ECM is high, replace ECM and go to "Verifi-
cation of Vehicle Repair".
NO
▶
Repair short to battery and go to "Verification of Vehicle Repair".
COMPONENT INSPECTION
E89CFEE5
1.
IG KEY "OFF", ENGINE "OFF".
2.
Disconnect RPS connector, APS connector, BPS connector.
3.
Check that sensor connector power supply is within the specification after turning IG KEY "ON".
4.
Connect RPS connector and APS connector in turn.
5.
Measure the voltage of power circuit of each sensor with all connector connected.
Specification : sensor power supply should not change as connecting RPS connector, APS connector, BPS connector.
( If the change of sensor power supply occur as connecting sensor connector, this means
the occurrence of short inside of sensor.)
6.
Does change of sensor power supply occur as connecting sensor connector?
DTC TROUBLESHOOTING PROCEDURES
FL -373
YES
▶
Replace related sensors.(rail pressure sensor, accel pedal sensor, boost pressure sensor)
NO
▶
Go to "Verification of Vehicle Repair".
VERIFICATION OF VEHICLE REPAIR
E4C6AA40
Refer to DTC P0652.
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