Hyundai Santa Fe (2006 year). Manual — part 549
FLA -262
FUEL SYSTEM
▶ 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
EC5462E1
Refer to DTC P0137.
DTC TROUBLESHOOTING PROCEDURES
FLA -263
DTC P0140 HO2S CIRCUIT NO ACTIVITY DETECTED (BANK 1 / SENSOR
2)
COMPONENT LOCATION
EEBC2F3C
Refer to DTC P0137.
GENERAL DESCRIPTION
ECB75069
Refer to DTC P0137.
DTC DESCRIPTION
EF2F1633
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 P0140. MIL(Malfunction Indication Lamp) turns on when the malfunction lasts till
consecutive 2 driving cycle.
DTC DETECTING CONDITION
EFF97065
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(B1/S2)
• PCM
SPECIFICATION
E0BF53DA
Refer to DTC P0137.
SCHEMATIC DIAGRAM
E35BC6DB
Refer to DTC P0137.
SIGNAL WAVEFORM AND DATA
E4AE5538
Refer to DTC P0137.
MONITOR DTC STATUS
EB63EA5F
Refer to DTC P0137.
FLA -264
FUEL SYSTEM
TERMINAL AND CONNECTOR INSPECTION
E6400FE2
Refer to DTC P0137.
SIGNAL CIRCUIT INSPECTION
E7FA65CA
1.
IG "OFF" and disconnect HO2S(B1/S2) connector.
2.
IG "ON" and ENG "OFF"
3.
Measure voltage between terminal 1 of HO2S(B1/S2) 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" procedure.
GROUND CIRCUIT INSPECTION
E909D35D
1.
IG "ON" and disconnect HO2S(B1/S2) connector.
2.
Measure voltage between terminal 1 of HO2S(B1/S2) harness connector and chassis ground.
3.
Measure voltage between terminals 1 and 2 of HO2S(B1/S2) 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.
DTC TROUBLESHOOTING PROCEDURES
FLA -265
COMPONENT INSPECTION
EE664101
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.?
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.
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