Infiniti QX56 (Z62). Manual — part 577
EC-286
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
P0197, P0198 EOT SENSOR
YES
>> GO TO 3.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
CHECK ENGINE OIL TEMPERATURE SENSOR
EC-286, "Component Inspection (Engine Oil Temperature Sensor)"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace engine oil temperature sensor. Refer to
4.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
>> INSPECTION END
Component Inspection (Engine Oil Temperature Sensor)
INFOID:0000000006217834
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. Refer to
.
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
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208 INJECTOR
EC-287
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208 INJECTOR
DTC Logic
INFOID:0000000006217835
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:
Before performing the following procedure, comfirm that battery voltage is 11 V or more at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Start the engine and let it idle at least 30 seconds.
3.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006217836
1.
PERFORM TROUBLE DIAGNOSIS FOR INJECTOR
EC-498, "Component Function Check"
.
Is inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
NO
>> Repair or replace error-detected parts.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0201
No.1 fuel injector circuit
ECM detects No. 1 injector circuit
is open or shorted.
• The fuel injector circuit is open or shorted
• Fuel injector
• ECM
P0202
No. 2 fuel injector circuit
ECM detects No. 2 injector circuit
is open or shorted.
P0203
No. 3 fuel injector circuit
ECM detects No. 3 injector circuit
is open or shorted.
P0204
No. 4 fuel injector circuit
ECM detects No. 4 injector circuit
is open or shorted.
P0205
No. 5 fuel injector circuit
ECM detects No. 5 injector circuit
is open or shorted.
P0206
No. 6 fuel injector circuit
ECM detects No. 6 injector circuit
is open or shorted.
P0207
No. 7 fuel injector circuit
ECM detects No. 7 injector circuit
is open or shorted.
P0208
No. 8 fuel injector circuit
ECM detects No. 8 injector circuit
is open or shorted.
EC-288
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
P0222, P0223 TP SENSOR
P0222, P0223 TP SENSOR
DTC Logic
INFOID:0000000006217837
DTC DETECTION LOGIC
NOTE:
If DTC P0222 or P0223 is displayed with DTC P0643, perform the trouble diagnosis for DTC P0643.
Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 8 V or more at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for 1 second.
2.
Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006217838
1.
CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT-I
1.
Disconnect electric throttle control actuator harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between electric throttle control actuator 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 THROTTLE POSITION SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between electric throttle control actuator and ECM harness connector.
DTC No.
Trouble diagnosis name
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0222
TP SEN 1/CIRC-B1
(Throttle position sensor 1
circuit low input)
An excessively low voltage from the TP
sensor 1 is sent to ECM.
• Harness or connectors
(TP sensor 1 circuit is open or shorted.)
• Electric throttle control actuator
(TP sensor 1)
P0223
TP SEN 1/CIRC-B1
(Throttle position sensor 1
circuit high input)
An excessively high voltage from the TP
sensor 1 is sent to ECM.
Electric throttle control actuator
Ground
Voltage (V)
Connector
Terminal
F66
2
Ground
Approx. 5
P0222, P0223 TP SENSOR
EC-289
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
C
D
E
F
G
H
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K
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M
A
EC
N
P
O
4.
Also check harness for short to ground and 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 THROTTLE POSITION SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between electric throttle control actuator and ECM harness connector.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK THROTTLE POSITION SENSOR
EC-289, "Component Inspection (Throttle Position Sensor)"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 5.
5.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
Replace electric throttle control actuator. Refer to
EM-30, "Removal and Installation"
>> INSPECTION END
6.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection (Throttle Position Sensor)
INFOID:0000000006217839
1.
CHECK THROTTLE POSITION SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
.
4.
Turn ignition switch ON.
5.
Set selector lever position to D.
6.
Check the voltage between ECM harness connector terminals under the following conditions.
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F66
4
F110
97
Existed
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F66
1
F110
91
Existed
ECM
Condition
Voltage (V)
Connector
+
–
Terminal
Terminal
F110
91
(TP sensor 1 signal)
97
(Sensor ground)
Accelerator pedal
Fully released
More than 0.36
Fully depressed
Less than 4.75
79
(TP sensor 2 signal)
Fully released
Less than 4.75
Fully depressed
More than 0.36
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