Infiniti M35/M45 Y50. Manual — part 714
DTC P2118 THROTTLE CONTROL MOTOR
EC-1329
[VK45DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P2118 THROTTLE CONTROL MOTOR
PFP:16119
Component Description
NBS005O6
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.
On Board Diagnosis Logic
NBS005O7
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation Procedure
NBS005O8
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1.
Turn ignition switch ON and wait at least 2 seconds.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Start engine and let it idle for 5 seconds.
4.
EC-1331, "Diagnostic Procedure"
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P2118
2118
Throttle control motor
circuit short
ECM detects short in both circuits between
ECM and throttle control motor.
●
Harness or connectors
(Throttle control motor circuit is shorted.)
●
Electric throttle control actuator
(Throttle control motor)
Engine operating condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return
spring.
SEF058Y
EC-1330
[VK45DE]
DTC P2118 THROTTLE CONTROL MOTOR
Wiring Diagram
NBS005O9
TBWT1501E
DTC P2118 THROTTLE CONTROL MOTOR
EC-1331
[VK45DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic Procedure
NBS005OA
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten ground screws on the body.
Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
3
R
Throttle control motor relay
power supply
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
4
W
Throttle control motor
(Close)
[Ignition switch: ON]
●
Engine: Stopped
●
Selector lever: D
●
Accelerator pedal: Released
0 - 14V
5
B
Throttle control motor
(Open)
[Ignition switch: ON]
●
Engine: Stopped
●
Selector lever: D
●
Accelerator pedal: Fully depressed
0 - 14V
104
O
Throttle control motor relay
[Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]
0 - 1.0V
PBIB1104E
PBIB1105E
1.
Body ground M70
2.
Body ground M16
PBIB2782E
EC-1332
[VK45DE]
DTC P2118 THROTTLE CONTROL MOTOR
2.
CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Disconnect electric throttle control actuator (1) harness connec-
tor.
–
Illustration shows the view with intake air duct removed.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between the following terminals.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace.
3.
CHECK THROTTLE CONTROL MOTOR
Refer to
EC-1332, "Component Inspection"
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 5.
4.
CHECK INTERMITTENT INCIDENT
Refer to
EC-857, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace harness or connectors.
5.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace the electric throttle control actuator.
2.
Perform
EC-788, "Throttle Valve Closed Position Learning"
.
3.
Perform
EC-788, "Idle Air Volume Learning"
.
>> INSPECTION END
Component Inspection
NBS005OB
THROTTLE CONTROL MOTOR
1.
Disconnect electric throttle control actuator harness connector.
2.
Check resistance between terminals 5 and 6.
3.
If NG, replace electric throttle control actuator and go to next
step.
4.
Perform
EC-788, "Throttle Valve Closed Position Learning"
.
5.
Perform
EC-788, "Idle Air Volume Learning"
.
Electric throttle control
actuator terminal
ECM terminal
Continuity
5
5
Should not exist.
4
Should exist.
6
5
Should exist.
4
Should not exist.
PBIB2690E
Resistance: Approximately 1 - 15
Ω
[at 25
°
C (77
°
F)]
PBIB2909E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст