Infiniti F50. Manual — part 492
DTC P2122, P2123 APP SENSOR
EC-609
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EC
Wiring Diagram
EBS00MMY
TBWM0127E
EC-610
DTC P2122, P2123 APP SENSOR
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure
EBS00MMZ
1.
RETIGHTEN GROUND SCREWS
1.
Turn ignition switch “OFF”.
2.
Loosen and retighten engine ground screws.
>> GO TO 2.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
87
L/W
Accelerator pedal position
sensor 1
[Ignition switch “ON”]
●
Engine stopped
●
Selector lever: “D”
●
Accelerator pedal is released
More than 0.36V
[Ignition switch “ON”]
●
Engine stopped
●
Selector lever: “D”
●
Accelerator pedal is fully depressed
Less than 4.75V
89
B
Sensor ground
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
94
G
Accelerator pedal position
sensor 2 power supply
[Ignition switch “ON”]
Approximately 2.5V
100
BR
Accelerator pedal position
sensor 2 ground
[Ignition switch “ON”]
Approximately 0V
103
L
Sensor power supply
[Ignition switch “ON”]
Approximately 5V
117
B/R
Accelerator pedal position
sensor 2
[Ignition switch “ON”]
●
Engine stopped
●
Selector lever: “D”
●
Accelerator pedal is released
More than 0.18V
[Ignition switch “ON”]
●
Engine stopped
●
Selector lever: “D”
●
Accelerator pedal is fully depressed
Less than 2.37V
PBIB0011E
DTC P2122, P2123 APP SENSOR
EC-611
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EC
2.
CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1.
Disconnect electric throttle control actuator harness connector.
2.
Turn ignition switch “ON”.
3.
Check voltage between electric throttle control actuator terminal
7 and ground with CONSULT-II or tester.
OK or NG
OK
>> GO TO 3.
NG
>> Repair open circuit or short to ground or short to power
in harness or connectors.
3.
CHECK APP SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch “OFF”.
2.
Check harness continuity between electric throttle control actuator terminal 9 and ECM terminal 89.
Refer to Wiring Diagram.
3.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Joint connector-30
●
Harness for open or short between ECM and electric throttle control actuator
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK APP SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Disconnect ECM harness connector.
2.
Check harness continuity between ECM terminal 87 and electric throttle control actuator terminal 8.
Refer to Wiring Diagram.
3.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 6.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB0015E
Voltage: Approximately 5V
PBIB1147E
Continuity should exist.
Continuity should exist.
EC-612
DTC P2122, P2123 APP SENSOR
6.
CHECK APP SENSOR
Refer to
EC-618, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 7.
7.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace the electric throttle control actuator.
2.
Perform
EC-46, "Accelerator Pedal Released Position Learning"
.
3.
Perform
EC-46, "Throttle Valve Closed Position Learning"
4.
Perform
EC-46, "Idle Air Volume Learning"
>> INSPECTION END
8.
CHECK INTERMITTENT INCIDENT
Refer to
EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
EBS00MN0
ACCELERATOR PEDAL POSITION SENSOR
1.
Reconnect all harness connectors disconnected.
2.
Turn ignition switch “ON”.
3.
Check voltage between ECM terminals 87 (APP sensor 1 sig-
nal), 117 (APP sensor 2 signal) and engine ground under the fol-
lowing conditions.
4.
If NG, replace accelerator pedal assembly.
5.
Perform
EC-46, "Accelerator Pedal Released Position Learning"
.
6.
Perform
EC-46, "Throttle Valve Closed Position Learning"
7.
Perform
EC-46, "Idle Air Volume Learning"
Removal and Installation
EBS00MN1
ACCELERATOR PEDAL
Refer to
ACC-2, "ACCELERATOR CONTROL SYSTEM"
.
Terminal
Accelerator pedal
Voltage
87
(Accelerator pedal position
sensor 1)
Fully released
More than 0.36V
Fully depressed
Less than 4.75V
117
(Accelerator pedal position
sensor 2)
Fully released
More than 0.18V
Fully depressed
Less than 2.37V
PBIB0184E
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