Infiniti FX35, FX50 (S51). Manual — part 678
P0197, P0198 EOT SENSOR
EC-253
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005236852
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection M95. Refer to Ground Inspection in
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK ENGINE OIL TEMPERATURE (EOT) SENSOR POWER SUPPLY CIRCUIT
1.
Disconnect 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 3.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
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?
YES
>> GO TO 4.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK EOT SENSOR
EC-253, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace engine oil temperature sensor.
5.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000005236853
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.
EOT sensor
Ground
Voltage (V)
Connector
Terminal
F38
1
Ground
Approx. 5
EOT sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
F38
2
F102
84
Existed
EC-254
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
P0197, P0198 EOT 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)
2.1 - 2.9
50 (122)
0.68 - 1.00
90 (194)
0.236 - 0.260
JMBIA0080ZZ
P0222, P0223, P2132, P2133 TP SENSOR
EC-255
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0222, P0223, P2132, P2133 TP SENSOR
Description
INFOID:0000000005236854
Electric throttle control actuator consists of throttle control motor,
throttle position (TP) sensor, etc. The throttle position sensor
responds to the throttle valve movement.
The throttle position sensor has two sensors. These sensors are a
kind of potentiometers which transform the throttle valve position into
output voltage, and emit the voltage signal to the ECM. In addition,
these sensors detect the opening and closing speed of the throttle
valve and feed the voltage signals to the ECM. The ECM judges the
current opening angle of the throttle valve from these signals and the
ECM controls the throttle control motor to make the throttle valve
opening angle properly in response to driving condition.
DTC Logic
INFOID:0000000005236855
DTC DETECTION LOGIC
NOTE:
If DTC P0222, P0223, P2132 or P2133 is displayed with DTC P0643, first perform the trouble diagnosis
for DTC P0643. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
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 more than 10 V 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
PBIB0145E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0222
Throttle position (TP)
sensor 1 (bank 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
Throttle position (TP)
sensor 1 (bank 1) circuit
high input
An excessively high voltage from the TP sensor
1 is sent to ECM.
P2132
Throttle position (TP)
sensor 1 (bank 2) circuit
low input
An excessively low voltage from the TP sensor
1 is sent to ECM.
P2133
Throttle position (TP)
sensor 1 (bank 2) circuit
high input
An excessively high voltage from the TP sensor
1 is sent to ECM.
EC-256
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
P0222, P0223, P2132, P2133 TP SENSOR
Diagnosis Procedure
INFOID:0000000005236856
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection M95. Refer to Ground Inspection in
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT
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 3.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
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 harness connector and ECM harness con-
nector.
4.
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 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
5.
CHECK THROTTLE POSITION SENSOR
EC-257, "Component Inspection"
DTC
Electric throttle control actuator
Ground
Voltage (V)
Bank
Connector
Terminal
P0222, P0223
1
F6
6
Ground
Approx. 5
P2132, P2133
2
F27
1
DTC
Electric throttle control actuator
ECM
Continuity
Bank
Connector
Terminal
Connector
Terminal
P0222, P0223
1
F6
3
F101
40
Existed
P2132, P2133
2
F27
4
48
DTC
Electric throttle control actuator
ECM
Continuity
Bank
Connector
Terminal
Connector
Terminal
P0222, P0223
1
F6
4
F101
30
Existed
P2132, P2133
2
F27
2
31
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