Infiniti QX56 (Z62). Manual — part 560
EC-218
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
P0117, P0118 ECT SENSOR
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 ENGINE COOLANT TEMPERATURE SENSOR
EC-218, "Component Inspection (Engine Coolant Temperature Sensor)"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace engine coolant temperature sensor.
4.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
>> INSPECTION END
Component Inspection (Engine Coolant Temperature Sensor)
INFOID:0000000006217800
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
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
P0122, P0123 TP SENSOR
EC-219
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0122, P0123 TP SENSOR
DTC Logic
INFOID:0000000006217801
DTC DETECTION LOGIC
NOTE:
If DTC P0122 or P0123 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:0000000006217802
1.
CHECK THROTTLE POSITION SENSOR 2 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 2.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
2.
CHECK THROTTLE POSITION SENSOR 2 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.
DTC No.
Trouble diagnosis name
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0122
TP SEN 2/CIRC-B1
(Throttle position sensor 2
circuit low input)
An excessively low voltage from the TP
sensor 2 is sent to ECM.
• Harness or connectors
(TP sensor 2 circuit is open or shorted.)
• Electric throttle control actuator
(TP sensor 2)
P0123
TP SEN 2/CIRC-B1
(Throttle position sensor 2
circuit high input)
An excessively high voltage from the TP
sensor 2 is sent to ECM.
Electric throttle control actuator
Ground
Voltage
Connector
Terminal
F66
2
Ground
Approx. 5 V
EC-220
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
P0122, P0123 TP SENSOR
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 2 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 4.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
CHECK THROTTLE POSITION SENSOR
EC-220, "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:0000000006217803
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
3
F110
79
Existed
P0122, P0123 TP SENSOR
EC-221
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
Replace electric throttle control actuator. Refer to
EM-30, "Removal and Installation"
>> INSPECTION END
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
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст