Hyundai Santa Fe (2006 year). Manual — part 553
FLA -278
FUEL SYSTEM
2.
Clear DTC with scantool.
3.
Start the engine and warm it up until the radiator fan comes on( more than at least 10 minutes).
4.
Drive at a steady speed between 45-55 mph(72-88 km/h) for 120 sec.
5.
Stop and then maintain idle state.
6.
Check if O2 sensor monitoring readiness is complete.
7.
Does the scan tool show DTC P0153?
YES
▶ Substitute with a known - good PCM and check for proper operation.
If the problem is corrected, go to "Verification of Vehicle Repair" procedure.
NO
▶ Troubleshooting is finished.
VERIFICATION OF VEHICLE REPAIR
EC659C03
Refer to DTC P0151.
DTC TROUBLESHOOTING PROCEDURES
FLA -279
DTC P0154 HO2S CIRCUIT NO ACTIVITY DETECTED (BANK 2 / SENSOR
1)
COMPONENT LOCATION
E927328A
Refer to DTC P0151.
GENERAL DESCRIPTION
E6703041
Refer to DTC P0151.
DTC DESCRIPTION
E6CCAEA2
Checking output signals from HO2S under detecting condition, if an output voltage is approx.0.45V or 3.5V for more
than predeterminate time, PCM sets P0154. MIL(Malfunction Indication Lamp) turns on when the malfunction lasts till
consecutive 2 driving cycle.
DTC DETECTING CONDITION
EEBE7B45
Item
Detecting Condition
Possible cause
DTC Strategy
• Monitor signal voltage
Enable Conditions
• Battery voltage ≥ 10V
• Engine running ≥ 60 sec.
• Engine warm-up state
• No disable faults
Case 1
• 1.2V ≤ Voltage of HO2S ≤ 3.9V
(at pumping current ON)
Thresh-
old value
Case 2
• 0.415V ≤ Voltage of HO2S ≤ 0.515V
(at pumping current OFF)
Diagnosis Time
• Continuous
(more than 76.5 sec.failure for every 90 sec.test)
MIL On Condition
• 2 driving cycles
• Poor connection
• Open in harness
• HO2S(B2/S1)
• PCM
SPECIFICATION
E3400454
Refer to DTC P0151.
SCHEMATIC DIAGRAM
E529691E
Refer to DTC P0151.
SIGNAL WAVEFORM AND DATA
E3453427
Refer to DTC P0151.
MONITOR DTC STATUS
E5E864C4
Refer to DTC P0151.
FLA -280
FUEL SYSTEM
TERMINAL AND CONNECTOR INSPECTION
EEA2C5E9
Refer to DTC P0151.
SIGNAL CIRCUIT INSPECTION
E2E9407E
1.
IG "OFF" and disconnect HO2S(B2/S1) connector.
2.
IG "ON" and ENG "OFF"
3.
Measure voltage between termianl 1 of HO2S(B2/S1) harness connector and chassis ground.
Specification :
Approx. 3.5V - when pumping current is ON
Approx. 0.45V - when pumping current is OFF
4.
Is the measured voltage within specification?
YES
▶ Go to "Ground circuit inspection" procedure.
NO
▶ Repair open in harness, and go to "Verification of Vehicle Repair" prcedure.
GROUND CIRCUIT INSPECTION
ED75DEA6
1.
IG "ON" and disconnect HO2S(B2/S1) connector.
2.
Measure voltage between terminal 1 of HO2S(B2/S1) harness connector and chassis ground.
3.
Measure voltage between terminals 1 and 2 of HO2S(B2/S1) harness connector.
Specification : Voltage difference between measurement "A" and "B" is below 200mV.
4.
Is the measured voltage within specification?
YES
▶ Go to "Component inspection" procedure.
NO
▶ Repair open or contact resistance in harness, and go to "Verification of Vehicle Repair" prcedure.
COMPONENT INSPECTION
EFACB6A1
1.
Check the Signal waveform of HO2S
1)
IG "OFF" and connect HO2S connector.
2)
Engine start.
3)
After warming-up, monitor signal waveform of HO2S with scantool.?
DTC TROUBLESHOOTING PROCEDURES
FLA -281
Fig) Signal waveform of front(the upper) and rear(the lower) HO2S at idle
SCMF16225L
4)
Is the sensor switching properly?
YES
▶ Go to "Check HO2S" as below.
NO
▶ Substitute with a known - good HO2S and check for proper operation.
If the problem is corrected, go to "Verification of Vehicle Repair" procedure.
2.
Check HO2S
1)
IG "OFF" and disconnect HO2S connector.
2)
Check that the HO2S is securely installed.
3)
Check the HO2S for contamination or damage
4)
Is the sensor normal?
YES
▶ Substitute with a known - good PCM and check for proper operation.
If the problem is corrected, go to "Verification of Vehicle Repair" procedure.
NO
▶ Substitute with a known - good HO2S and check for proper operation.
If the problem is corrected, go to "Verification of Vehicle Repair" procedure.
NOTE
There is a memory reset function on scantool that can erase optional parts automatically detected and memorized
by PCM. Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others.
VERIFICATION OF VEHICLE REPAIR
EEA84363
Refer to DTC P0151.
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