sensor INFINITI QX56 2011 Factory Service Manual
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![INFINITI QX56 2011 Factory Service Manual
EC-222
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0125 ECT SENSOR
P0125 ECT SENSOR
DTC LogicINFOID:0000000006288280
DTC DETECTION LOGIC
NOTE:
If DTC P0125 is displayed with P0117 or P0118,
first perform the](/img/42/57033/w960_57033-2245.png "INFINITI QX56 2011 Factory Service Manual
EC-222
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0125 ECT SENSOR
P0125 ECT SENSOR
DTC LogicINFOID:0000000006288280
DTC DETECTION LOGIC
NOTE:
If DTC P0125 is displayed with P0117 or P0118,
first perform the")
EC-222
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0125 ECT SENSOR
P0125 ECT SENSOR
DTC LogicINFOID:0000000006288280
DTC DETECTION LOGIC
NOTE:
If DTC P0125 is displayed with P0117 or P0118,
first perform the trouble diagnosis for DTC P0117,
P0118. Refer to EC-217, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.CHECK ENGINE COOLANT TEMPERATURE SENSOR FUNCTION
WITH CONSULT-III
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-III.
3. Check that “COOLAN TEMP/S” is above 10 °C (50 °F).
WITH GST
Follow the procedure “With CONSULT-III” above.
Is the temperature above 10
°C (50°F)?
YES >> INSPECTION END
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE
WITH CONSULT-III
1. Start engine and run it for 65 minutes at idle speed. If “COOLAN TEMP/S” increases to more than 10 °C (50 °F) within 65 minutes, stop engine because
the test result will be OK.
CAUTION:
Never overheat engine.
2. Check 1st trip DTC.
WITH GST
Follow the procedure “With CONSULT-III” above.
Is 1st trip DTC detected?
YES >> EC-222, "Diagnosis Procedure"
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006288281
1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-218, "
Component Inspection (Engine Coolant Temperature Sensor)".
Is the inspection result normal?
YES >> GO TO 2.
DTC No. Trouble diagnosis name
(Trouble diagnosis content) DTC detecting condition Possible cause
P0125 ECT SENSOR
(Insufficient engine coolant
temperature for closed loop
fuel control) Voltage sent to ECM from the sensor is not
practical, even when some time has passed
after starting the engine.
Engine coolant temperature is insufficient for closed loop fuel control. Harness or connectors
(High resistance in the circuit)
Engine coolant temperature sensor
Thermostat
Revision: 2010 May2011 QX56
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P0125 ECT SENSOREC-223
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NO >> Replace engine coolant temperature sensor.
2.CHECK THERMOSTAT OPERATION
When the engine is cold [lower](/img/42/57033/w960_57033-2246.png "INFINITI QX56 2011 Factory Service Manual
P0125 ECT SENSOREC-223
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NO >> Replace engine coolant temperature sensor.
2.CHECK THERMOSTAT OPERATION
When the engine is cold [lower")
P0125 ECT SENSOREC-223
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NO >> Replace engine coolant temperature sensor.
2.CHECK THERMOSTAT OPERATION
When the engine is cold [lower than 70 °C (158 °F)] condition, grasp lower radiator hose and confirm that the
engine coolant does not flow.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace thermostat. Refer to CO-20, "
Removal and Installation".
3.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Component Inspection (Engine Coolant Temperature Sensor)INFOID:0000000006288610
1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
1. Turn ignition switch OFF.
2. Disconnect engine coolant temperature sensor harness connector.
3. Remove engine coolant temperature sensor.
4. Check resistance between engine coolant temperature sensor
terminals by heating with hot water as shown in the figure.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace engine coolant temperature sensor. Refer to EM-86, "
Exploded View".
Terminals Condition Resistance (k Ω)
1 and 2 Temperature [ °C ( °F)] 20 (68) 2.35 - 2.73
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
JMBIA0080ZZ
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Service Manual
EC-224
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P0127 IAT SENSOR
P0127 IAT SENSOR
DTC LogicINFOID:0000000006288283
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
1. Turn ignition switch OF](/img/42/57033/w960_57033-2247.png "INFINITI QX56 2011 Factory Service Manual
EC-224
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0127 IAT SENSOR
P0127 IAT SENSOR
DTC LogicINFOID:0000000006288283
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
1. Turn ignition switch OF")
EC-224
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P0127 IAT SENSOR
P0127 IAT SENSOR
DTC LogicINFOID:0000000006288283
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
This test may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road
test is expected to be easier, it is unnecessary to lift the vehicle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
WITH CONSULT-III
1. Wait until engine coolant temperature is less than 90 °C (194 °F)
- Turn ignition switch ON.
- Select “DATA MONITOR” mode with CONSULT-III.
- Check the engine coolant temperature.
- If the engine coolant temperature is not less than 90 °C (194 °F), turn ignition switch OFF and cool down
engine.
NOTE:
Perform the following steps before engine coolant temperature is above 90 °C (194 °F).
2. Turn ignition switch ON.
3. Select “DATA MONITOR” mode with CONSULT-III.
4. Start engine.
5. Hold vehicle speed at more than 70 km/h (43 MPH) for 100 consecutive seconds.
CAUTION:
Always drive vehicle at a safe speed.
6. Check 1st trip DTC.
WITH GST
Follow the procedure “With CONSULT-III” above.
Is 1st trip DTC detected?
YES >> Proceed to EC-224, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006288284
1.CHECK INTAKE AIR TEMPERATURE SENSOR
Refer to EC-225, "
Component Inspection (Intake Air Temperature Sensor)".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace mass air flow sensor (with intake air temperature sensor).
2.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
DTC No. Trouble diagnosis name
(Trouble diagnosis content) DTC detecting condition Possible cause
P0127 IAT SENSOR-B1
(Intake air temperature too
high) Rationally incorrect voltage from the sensor is
sent to ECM, compared with the voltage signal
from engine coolant temperature sensor. Harness or connectors
(The intake air temperature sensor
circuit is open or shorted)
Intake air temperature sensor
Revision: 2010 May2011 QX56
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P0127 IAT SENSOREC-225
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>> INSPECTION END
Component Inspection (Intak
e Air Temperature Sensor)INFOID:0000000006288285
1.CHECK INTAKE](/img/42/57033/w960_57033-2248.png "INFINITI QX56 2011 Factory Service Manual
P0127 IAT SENSOREC-225
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>> INSPECTION END
Component Inspection (Intak
e Air Temperature Sensor)INFOID:0000000006288285
1.CHECK INTAKE")
P0127 IAT SENSOREC-225
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>> INSPECTION END
Component Inspection (Intak
e Air Temperature Sensor)INFOID:0000000006288285
1.CHECK INTAKE AIR TEMPERATURE SENSOR
1. Turn ignition switch OFF.
2. Disconnect mass air flow sensor harness connector.
3. Check resistance between mass air flow s ensor terminals as per the following.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace mass air flow sensor (with intake air temperature sensor). Refer to EM-30, "
Removal and
Installation".
Terminals Condition Resistance (kΩ)
1 and 2 Temperature [ °C ( °F)] 25 (77) 1.94 - 2.06
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Service Manual
EC-226
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0128 THERMOSTAT FUNCTION
P0128 THERMOSTAT FUNCTION
DTC LogicINFOID:0000000006288286
DTC DETECTION LOGIC
NOTE:
If DTC P0128 is displayed with DTC P0300, P0301](/img/42/57033/w960_57033-2249.png "INFINITI QX56 2011 Factory Service Manual
EC-226
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0128 THERMOSTAT FUNCTION
P0128 THERMOSTAT FUNCTION
DTC LogicINFOID:0000000006288286
DTC DETECTION LOGIC
NOTE:
If DTC P0128 is displayed with DTC P0300, P0301")
EC-226
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0128 THERMOSTAT FUNCTION
P0128 THERMOSTAT FUNCTION
DTC LogicINFOID:0000000006288286
DTC DETECTION LOGIC
NOTE:
If DTC P0128 is displayed with DTC P0300, P0301,
P0302, P0303, P0304, P0305, P0306, P0307 or P0308,
first perform the trouble diagnosis for DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307,
P0308. Refer to EC-291, "
DTC Logic".
Engine coolant temperature has not risen enough to open the thermostat even though the engine has run long
enough.
This is due to a leakage in the seal or the thermostat being stuck open.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
For best results, perform at ambient temperature of –10 °C (14 °F) or higher.
For best results, perform at en gine coolant temperature of –10 °C (14 °F) to 52 °C (126 °F).
Before performing the following procedure, do not add fuel.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
WITH CONSULT-III
1. Turn A/C switch OFF.
2. Turn blower fan switch OFF.
3. Turn ignition switch ON.
4. Select “COOLAN TEMP/S” in “DATA MONITOR” mode with CONSULT-III.
5. Check the indication of “COOLAN TEMP/S”. If it is below 52 °C (126 °F), go to next step.
If it is above 52 °C (126 °F), cool engine down to less than 52 °C (126 °F). Then go to next step.
6. Start engine and drive vehicle for 10 consec utive minutes under the following conditions.
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “COOLAN TEMP/S” increases to more than 71 °C (160 °F) within 10 minutes, turn ignition switch
OFF because the test result will be OK.
7. Check 1st trip DTC.
WITH GST
Follow the procedure “With CONSULT-III” above.
Is 1st trip DTC detected?
YES >> Proceed to EC-227, "Diagnosis Procedure".
NO >> INSPECTION END
DTC No. Trouble diagnosis name
(Trouble diagnosis content) DTC detecting condition Possible cause
P0128 THERMSTAT FNCTN
(Thermostat function) The engine coolant temperature does not
reach to specified temperature even
though the engine has run long enough. Thermostat
Leakage from sealing portion of thermostat
Engine coolant temperature sensor
Vehicle speed More than 56 km/h (35 MPH)
Revision: 2010 May2011 QX56
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P0128 THERMOSTAT FUNCTIONEC-227
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Diagnosis ProcedureINFOID:0000000006288287
1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-22](/img/42/57033/w960_57033-2250.png "INFINITI QX56 2011 Factory Service Manual
P0128 THERMOSTAT FUNCTIONEC-227
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Diagnosis ProcedureINFOID:0000000006288287
1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-22")
P0128 THERMOSTAT FUNCTIONEC-227
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Diagnosis ProcedureINFOID:0000000006288287
1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-227, "
Component Inspection (Engine Coolant Temperature Sensor)".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace engine coolant temperature sensor.
2.CHECK THERMOSTAT
Remove and Check the thermostat. Refer to CO-20, "
Removal and Installation" and CO-21, "Inspection".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace thermostat.
Component Inspection (Engine Coolant Temperature Sensor)INFOID:0000000006288288
1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
1. Turn ignition switch OFF.
2. Disconnect engine coolant temperature sensor harness connector.
3. Remove engine coolant temperature sensor.
4. Check resistance between engine coolant temperature sensor
terminals by heating with hot water as shown in the figure.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace engine coolant temperature sensor.
Terminals Condition Resistance (k Ω)
1 and 2 Temperature [ °C ( °F)] 20 (68) 2.35 - 2.73
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
JMBIA0080ZZ
Revision: 2010 May2011 QX56
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![INFINITI QX56 2011 Factory Service Manual
EC-228
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0130, P0150 A/F SENSOR 1
P0130, P0150 A/F SENSOR 1
DTC LogicINFOID:0000000006217804
DTC DETECTION LOGIC
To judge malfunctions, the diagnosis checks that the](/img/42/57033/w960_57033-2251.png "INFINITI QX56 2011 Factory Service Manual
EC-228
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0130, P0150 A/F SENSOR 1
P0130, P0150 A/F SENSOR 1
DTC LogicINFOID:0000000006217804
DTC DETECTION LOGIC
To judge malfunctions, the diagnosis checks that the")
EC-228
< DTC/CIRCUIT DIAGNOSIS >[VK56VD]
P0130, P0150 A/F SENSOR 1
P0130, P0150 A/F SENSOR 1
DTC LogicINFOID:0000000006217804
DTC DETECTION LOGIC
To judge malfunctions, the diagnosis checks that the A/
F signal computed by ECM from the A/F sensor 1 sig-
nal fluctuates according to fuel feedback control.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
1. Start engine and warm it up to normal operating temperature.
2. Let engine idle for 2 minutes.
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-230, "Diagnosis Procedure".
NO-1 >> With CONSULT-III: GO TO 3.
NO-2 >> With GST: GO TO 7.
3.CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
WITH CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Select “A/F SEN1 (B1)” or “A/F SEN1 (B 2)” in “DATA MONITOR” mode with CONSULT-III.
3. Check “A/F SEN1 (B1)” or “A/F SEN1 (B2)” indication.
Does the indication fluctuate around 1.5 V?
YES >> GO TO 4.
NO >> Go to EC-230, "
Diagnosis Procedure".
4.PERFORM DTC CONFIRMATION PR OCEDURE FOR MALFUNCTION B-I
1. Select “A/F SEN1 (B1) P1276” (for DTC P0130) or “A/F SEN1 (B2) P1286” (for DTC P0150) of “A/F
SEN1” in “DTC WORK SUPPORT” mode with CONSULT-III.
2. Touch “START”.
3. When the following conditions are met, “T ESTING” will be displayed on the CONSULT-III screen.
DTC No.Trouble diagnosis name
(Trouble diagnosis content) DTC detecting condition Possible Cause
P0130 A/F SENSOR1 (B1)
[Air fuel ratio (A/F) sensor 1
(bank 1) circuit] A)
The A/F signal computed by ECM from the A/F
sensor 1 signal is constantly in a range other
than approx. 1.5 V.
Harness or connectors(The A/F sensor 1 circuit is open
or shorted.)
A/F sensor 1
B)
The A/F signal computed by ECM from the A/F
sensor 1 signal is constantly approx. 1.5 V.
P0150 A/F SENSOR1 (B2)
[Air fuel ratio (A/F) sensor 1
(bank 2) circuit] A)
The A/F signal computed by ECM from the A/F
sensor 1 signal is constantly in a range other
than approx. 1.5 V.
B) The A/F signal computed by ECM from the A/F
sensor 1 signal is constantly approx. 1.5 V.
Revision: 2010 May2011 QX56
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P0130, P0150 A/F SENSOR 1EC-229
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If “TESTING” is not displayed after 20 seconds, retry from step 2.
CAUTION:
Always drive vehicle](/img/42/57033/w960_57033-2252.png "INFINITI QX56 2011 Factory Service Manual
P0130, P0150 A/F SENSOR 1EC-229
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If “TESTING” is not displayed after 20 seconds, retry from step 2.
CAUTION:
Always drive vehicle")
P0130, P0150 A/F SENSOR 1EC-229
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If “TESTING” is not displayed after 20 seconds, retry from step 2.
CAUTION:
Always drive vehicle at a safe speed.
Is
“TESTING” displayed on CONSULT-III screen?
YES >> GO TO 5.
NO >> Check A/F sensor 1 function again. GO TO 3.
5.PERFORM DTC CONFIRMATION PR OCEDURE FOR MALFUNCTION B-II
Release accelerator pedal fully.
NOTE:
Never apply brake when releasing the accelerator pedal.
Which does
“TESTING” change to?
COMPLETED>>GO TO 6.
OUT OF CONDITION>>Retry DTC CO NFIRMATION PROCEDURE. GO TO 4.
6.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B-III
Touch “SELF-DIAG RESULT”.
Which is displayed on CONSULT-III screen?
YES >> INSPECTION END
NO >> Go to EC-230, "
Diagnosis Procedure".
7.PERFORM COMPONENT FUNCTION CHECK FOR MALFUNCTION B
WITH GST
Perform component function check. Refer to EC-229, "
Component Function Check".
NOTE:
Use component function check to check the overall function of the A/F sensor 1 circuit. During this check, a
1st trip DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-230, "
Diagnosis Procedure".
Component Function CheckINFOID:0000000006217805
1.PERFORM COMPONENT FUNCTION CHECK
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in the suitable gear position.
3. Shift the selector lever position to D, then rel ease the accelerator pedal fully until the vehicle speed
decreases to 50 km/h (31 MPH).
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
Never apply brake when releasing the accelerator pedal.
4. Repeat steps 2 and 3 for 5 times.
5. Stop the vehicle and turn ignition switch OFF.
6. Wait at least 10 seconds and turn ignition switch ON.
7. Turn ignition switch OFF and wait at least 10 seconds.
8. Restart engine.
9. Repeat steps 2 and 3 for 5 times.
10. Stop the vehicle.
11. Check 1st trip DTC.
ENG SPEED 1,750 - 3,200 rpm
VHCL SPEED SE More than 64 km/h (40 mph)
B/FUEL SCHDL 1.0 - 8.0 msec
Selector lever D position
Revision: 2010 May2011 QX56
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EC-230
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P0130, P0150 A/F SENSOR 1
Is 1st trip DTC detected?
YES >> Go to
EC-230, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:00000000062178](/img/42/57033/w960_57033-2253.png "INFINITI QX56 2011 Factory Service Manual
EC-230
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P0130, P0150 A/F SENSOR 1
Is 1st trip DTC detected?
YES >> Go to
EC-230, \"Diagnosis Procedure\".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:00000000062178")
EC-230
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P0130, P0150 A/F SENSOR 1
Is 1st trip DTC detected?
YES >> Go to
EC-230, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006217806
1.CHECK AIR FUEL RATIO SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect air fuel ratio (A/F) sensor 1 harness connector.
2. Turn ignition switch ON.
3. Check the voltage between A/F sensor 1 harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
2.CHECK A/F SENSOR 1 INPUT SIGN AL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.
4. Check the continuity between A/F sensor 1 harness connector and ground, or ECM harness connector
and ground.
5. Also check harness for short to power.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
3.CHECK A/F SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.
4. Also check harness for short to power.
Is the inspection result normal?
DTC A/F sensor 1
Ground Voltage
Bank Connector Terminal
P0130 1 F67 4 Ground 3.0 V
P0150 2 F68 4
DTC A/F sensor 1 ECM
Continuity
Bank Connector Terminal Connector Terminal
P0130 1 F67 3 F11088
Existed
P0150 2 F68 3 78
DTC A/F sensor 1 ECM
Ground Continuity
Bank Connector Terminal Connector Terminal
P0130 1 F67 3 F11088
Ground Not existed
P0150 2 F68 3 78
DTC A/F sensor 1 ECM
Continuity
Bank Connector Terminal Connector Terminal
P0130 1 F67 6 F11094
Existed
P0150 2 F68 6 74
Revision: 2010 May2011 QX56
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P0130, P0150 A/F SENSOR 1EC-231
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YES >> GO TO 4.
NO >> Repair open circuit, short to ground or short to power in harness or connector](/img/42/57033/w960_57033-2254.png "INFINITI QX56 2011 Factory Service Manual
P0130, P0150 A/F SENSOR 1EC-231
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YES >> GO TO 4.
NO >> Repair open circuit, short to ground or short to power in harness or connector")
P0130, P0150 A/F SENSOR 1EC-231
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YES >> GO TO 4.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
4.CHECK INTERMITTENT INCIDENT
Perform GI-40, "
Intermittent Incident".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace malfunctioning part.
5.REPLACE A/F SENSOR 1
Replace malfunctioning A/F sensor 1. Refer to EM-40, "
Removal and Installation".
CAUTION:
Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.
Before installing new A/F senso r, clean exhaust system threads using Oxygen Sensor Thread
Cleaner [commercial service tool (J-43897-18 or J-43897-12)] and approved anti-seize lubricant
(commercial service tool).
>> INSPECTION END
Revision: 2010 May2011 QX56