Infiniti QX56 (Z62). Manual — part 576
EC-282
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
P0191 FRP SENSOR
Is the inspection result normal?
YES
>> INSPECTION END.
NO
>> Replace FRP sensor. Refer to
+
−
Condition
Value
(Approx.)
ECM
Connector
Terminal
Connector
Terminal
F111
31
F111
40
[Engine is running]
• Warm-up condition
• Idle speed
0.98 – 1.2 V
[Engine is running]
• Warm-up condition
• Revving engine from idle to 4,000 rpm quickly
1.1 – 2.9 V
P0196 EOT SENSOR
EC-283
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0196 EOT SENSOR
DTC Logic
INFOID:0000000006288301
DTC DETECTION LOGIC
NOTE:
If DTC P0196 is displayed with P0197 or P0198, first perform the trouble diagnosis for DTC P0197,
P0198. Refer to
.
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-I
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Turn ignition switch ON.
4.
Turn ignition switch OFF and wait at least 10 seconds.
5.
Start engine and let it idle for 5 minutes and 10 seconds.
6.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>>
.
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE-II
WITH CONSULT-III
1.
Select “DATA MONITOR” mode with CONSULT-III.
2.
Check that “COOLAN TEMP/S” indicates above 80
°
C (176
°
F).
If it is above 80
°
C (176
°
F), go to the following steps.
If it is below 80
°
C (176
°
F), warm engine up until “COOLAN TEMP/S” indicates more than 80
°
C (176
°
F).
Then perform the following steps.
3.
Turn ignition switch OFF and soak the vehicle in a cool place.
4.
Turn ignition switch ON.
NOTE:
Do not turn ignition switch OFF until step 8.
5.
Select “DATA MONITOR” mode with CONSULT-III.
6.
Check the following.
If they are within the specified range, perform the following steps.
If they are out of the specified range, soak the vehicle to meet the above conditions. Then perform the fol-
lowing steps.
DTC No.
Trouble diagnosis name
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0196
EOT SENSOR
(Engine oil temperature sen-
sor range/performance)
Rationally incorrect voltage from the sensor is
sent to ECM, compared with the voltage signals
from engine coolant temperature sensor and in-
take air temperature sensor.
• Harness or connectors
(The EOT sensor circuit is open or
shorted)
• Engine oil temperature sensor
COOLAN TEMP/S
Below 40
°
C (104
°
F)
INT/A TEMP SE
Below 40
°
C (104
°
F)
Difference between “COOLAN TEMP/S” and “INT/A TEMP SE”
Within 6
°
C (11
°
F)
EC-284
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
P0196 EOT SENSOR
NOTE:
• Do not turn ignition switch OFF.
• If it is supposed to need a long period of time, do not deplete the battery.
7.
Start engine and let it idle for 5 minutes.
8.
Check 1st trip DTC.
WITH GST
Follow the procedure “With CONSULT-III” above.
Is 1st trip DTC detected?
YES
>>
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006288302
1.
CHECK ENGINE OIL TEMPERATURE SENSOR
EC-284, "Component Inspection (Engine Oil Temperature Sensor)"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace engine oil temperature sensor. Refer to
2.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
>> INSPECTION END
Component Inspection (Engine Oil Temperature Sensor)
INFOID:0000000006288303
1.
CHECK ENGINE OIL TEMPERATURE SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect engine oil temperature sensor harness connector.
3.
Remove engine oil temperature sensor.
4.
Check resistance between engine oil temperature sensor termi-
nals by heating with hot water as shown in the figure.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace engine oil 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
P0197, P0198 EOT SENSOR
EC-285
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0197, P0198 EOT SENSOR
DTC Logic
INFOID:0000000006217832
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.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and wait at least 5 seconds.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006217833
1.
CHECK ENGINE OIL TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1.
Disconnect engine oil temperature (EOT) sensor harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between EOT sensor 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 EOT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between EOT sensor harness connector and ECM harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
DTC No.
Trouble diagnosis name
(Trouble diagnosis content)
DTC Detecting Condition
Possible Cause
P0197
EOT SEN/CIRC
(Engine oil temperature
sensor circuit low input)
An excessively low voltage from the sensor
is sent to ECM.
• Harness or connectors
(The engine oil temperature sensor circuit
is open or shorted.)
• Engine oil temperature sensor
P0198
EOT SEN/CIRC
(Engine oil temperature
sensor circuit high input)
An excessively high voltage from the sensor
is sent to ECM.
EOT sensor
Ground
Voltage (V)
Connector
Terminal
F38
1
Ground
Approx. 5
EOT sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
F38
2
F111
40
Existed
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