Infiniti QX56 (Z62). Manual — part 624
EC-474
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
P2127, P2128 APP SENSOR
>> INSPECTION END
Component Inspection (Accelerator Pedal Position Sensor)
INFOID:0000000006217977
1.
CHECK ACCELERATOR PEDAL POSITION SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
Turn ignition switch ON.
4.
Check the voltage ECM harness connector terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE ACCELERATOR PEDAL ASSEMBLY
Replace accelerator pedal assembly. Refer to
ACC-3, "MODELS WITHOUT DISTANCE CONTROL ASSIST
SYSTEM : Removal and Installation"
(Without distance control assist system) or
DISTANCE CONTROL ASSIST SYSTEM : Removal and Installation"
(With distance control assist system).
>> INSPECTION END
ECM
Condition
Voltage (V)
Connector
+
–
Terminal
Terminal
E80
136 (APP sensor 1)
140
Accelerator pedal
Fully released
0.65 - 0.87
Fully depressed
4.3 - 4.8
126 (APP sensor 2)
129
Fully released
0.28 - 0.48
Fully depressed
2.0 - 2.5
P2135 TP SENSOR
EC-475
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P2135 TP SENSOR
DTC Logic
INFOID:0000000006217978
DTC DETECTION LOGIC
NOTE:
If DTC P2135 is displayed with DTC P0643, perform the trouble diagnosis for DTC P0643. 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 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:0000000006217979
1.
CHECK THROTTLE POSITION SENSOR 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 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
P2135
TP SENSOR-B1
(Throttle position sensor circuit
range/performance)
Rationally incorrect voltage is sent to
ECM compared with the signals from
TP sensor 1 and TP sensor 2.
• Harness or connector
(TP sensor 1 or 2 circuit is open or shorted.)
• Electric throttle control actuator
(TP sensor 1 or 2)
Electric throttle control actuator
Ground
Voltage (V)
Connector
Terminal
F66
2
Ground
Approx. 5
EC-476
< DTC/CIRCUIT DIAGNOSIS >
[VK56VD]
P2135 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 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-476, "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:0000000006217980
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
3
79
P2135 TP SENSOR
EC-477
< 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
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