Nissan Murano: Dtc/circuit Diagnosis / P2118 Throttle Control Motor
DTC Description
DTC DETECTION LOGIC
| DTC |
CONSULT screen terms
(Trouble diagnosis content) |
DTC detection condition |
| P2118 |
ETC MOT-B1
(Throttle actuator control motor current range/performance) |
Diagnosis condition |
Start engine and let it idle |
| Signal (terminal) |
Throttle control motor circuit |
| Threshold |
ECM detects short in both circuits between ECM and throttle control motor |
| Diagnosis delay time |
— |
POSSIBLE CAUSE
FAIL-SAFE
| Engine operating condition in fail-safe mode |
| Fail safe mode | Nissan Murano Vehicle behavior |
| Throttle control motor |
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring. |
DTC Confirmation Procedure
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
-
Turn ignition switch OFF and wait at least 10 seconds.
-
Turn ignition switch ON.
-
Turn ignition switch OFF and wait at least 10 seconds.
>>
GO TO 2.
PERFORM DTC CONFIRMATION PROCEDURE
-
Turn ignition switch ON and wait at least 2 seconds.
-
Start engine and let it idle for 5 seconds.
-
Check DTC.
Is DTC detected?
YES>>
Proceed to Diagnosis Procedure.
NO>>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO>>
Confirmation after repair: INSPECTION END
Diagnosis Procedure
CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
-
Disconnect electric throttle control actuator harness connector.
-
Disconnect ECM harness connector.
-
Check the continuity between electric throttle control actuator harness connector and ECM harness connector.
| Electric throttle control actuator | ECM | Continuity |
| Connector | Terminal | Connector | Terminal |
| F50 |
1 |
F78 |
1 |
Not existed |
| 3 |
Existed |
| 2 |
1 |
Existed |
| 3 |
Not existed |
-
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES>>
GO TO 2.
NO>>
Repair or replace malfunctioning part.
CHECK THROTTLE CONTROL MOTOR
Check throttle control motor. Refer to Component Inspection.
Is the inspection result normal?
YES>>
INSPECTION END
NO>>
Replace electric throttle control actuator. Refer to Removal and Installation.
Component Inspection
CHECK THROTTLE CONTROL MOTOR
-
Turn ignition switch OFF.
-
Disconnect electric throttle control actuator harness connector.
-
Check resistance between electric throttle control actuator terminals as per the following.
| Terminals | Resistance |
| 1 and 2 |
Approx. 1 - 15 Ω [at 25°C (77°F)] |
Is the inspection result normal?
YES>>
INSPECTION END
NO>>
Replace electric throttle control actuator. Refer to Removal and Installation.
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P2101
ETC FNCTN/CIRC-B1
(Throttle actuator “A” control motor circuit range/performance)
Diagnosis condition
Start engine and let it idle
Signal (terminal)
—
Threshold
Electric throttle control function does not operate properly
Diagnosis delay time
—
POSSIBLE CAUSE
Harness or connectors
(Throttle control motor circuit is open or shorted)
Electric throttle control actuator
FAIL-SAFE Engine operating condition in fail-safe mode
Fail safe mode Nissan Murano Vehicle behavior
Electric throttle control function
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx...
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P2119
ETC ACTR-B1
(Throttle actuator control throttle body range/performance)
1
Diagnosis condition
—
Signal (terminal)
—
Threshold
Electric throttle control actuator does not function properly due to the return spring malfunction
Diagnosis delay time
—
2
Diagnosis condition
—
Signal (terminal)
—
Threshold
Throttle valve opening angle in fail-safe mode is not in specified range
Diagnosis delay time
—
3
Diagnosis condition
—
Signal (terminal)
—
Threshold
ECM detects that the throttle valve is stuck open
Diagnosis delay time
—
POSSIBLE CAUSE
Electric throttle control actuator
FAIL-SAFE Engine operating condition in fail-safe mode
Fail safe mode Nissan Murano Vehicle behavior
Electric throttle control actuator
(When electric throttle control actuator does not function properly due to the return spring malfunction:)
ECM controls the electric throttle actuator by regulating the throttle opening around the idle position...
Other information:
Component Function Check
DATA MONITOR
CONSULT
Select “SLIDE SW-FR”, “SLIDE SW-RR” in “Data Monitor” mode of “AUTO DRIVE POS.”.
Check that the function operates normally according to the following conditions:
Monitor item Condition Status
SLIDE SW-FR
Sliding switch (forward)
Operate
ON
Release
OFF
SLIDE SW-RR
Sliding switch (backward)
Operate
ON
Release
OFF
Is the inspection result normal?
YES>>
Inspection End...
Abbreviation List
The following ABBREVIATIONS are used:A ABBREVIATION DESCRIPTION
A/C
Air conditioner
Air conditioning
A/F sensor
Air fuel ratio sensor
A/T
Automatic transaxle/transmission
ABS
Anti-lock braking system
ACCS
Advance climate control system
ACL
Air cleaner
AEB
Automatic Emergency Braking
AP
Accelerator pedal
APP
Accelerator pedal position
ATF
Automatic transmission fluid
ATR
Active torque rod
AV
Audio visual
AVM
Around view monitor
AWD
All wheel drive
B ABBREVIATION DESCRIPTION
BARO
Barometric pressure
BCI
Backup collision intervention
BCM
Body control module
BLSD
Brake limited slip differential
BPP
Brake pedal position
BSI
Blind spot intervention
BSW
Blind spot warning
C ABBREVIATION DESCRIPTION
CGW
Can Gateway
CKP
Crankshaft position
CL
Closed loop
CMP
Camshaft position
CPP
Clutch pedal position
CTP
Closed throttle position
CVT
Continuously variable transaxle/transmission
D ABBREVIATION DESCRIPTION
D1
Drive range first gear
D2
Drive range second gear
D3
Drive range third gear
D4
Drive range fourth gear
DCA
Distance control assist
DDS
Downhill drive support
DFI
Direct fuel injection system
DLC
Data link connector
DTC
Diagnostic trouble code
E ABBREVIATION DESCRIPTION
E/T
Exhaust temperature
EBD
Electric brake force distribution
EC
Engine control
ECD
Electronic controlled deceleration
ECL
Engine coolant level
ECM
Engine control module
ECT
Engine coolant temperature
ECV
Electrical control valve
EEPROM
Electrically erasable programmable read only memory
EFT
Engine fuel temperature
EGR
Exhaust gas recirculation
EGRT
Exhaust gas recirculation temperature
EGT
Exhaust gas temperature
ELD
Electronic locking differential
EOP
Engine oil pressure
EP
Exhaust pressure
EPR
Exhaust pressure regulator
EPS
Electronically controlled power steering
Electronic power steering
ESP
Electronic stability program system
EVAP canister
Evaporative emission canister
EVSE
Electric Nissan Murano vehicle supply equipment
EXC
Exhaust control
F ABBREVIATION DESCRIPTION
FC
Fan control
FCW
Forward collision warning
FEB
Forward Emergency Braking
FIC
Fuel injector control
FP
Fuel pump
FR
Front
FRP
Fuel rail pressure
FRT
Fuel rail temperature
FTP
Fuel tank pressure
FTT
Fuel tank temperature
G ABBREVIATION DESCRIPTION
GND
Ground
GPS
Global positioning system
GST
Generic scan tool
H ABBREVIATION DESCRIPTION
HBMC
Hydraulic body-motion control system
HDD
Hard disk drive
HO2S
Heated oxygen sensor
HOC
Heated oxidation catalyst
HPCM
Hybrid powertrain control module
I ABBREVIATION DESCRIPTION
I/M
Inspection and maintenance
IA
Intake air
IAC
Idle air control
IAT
Intake air temperature
IBA
Intelligent brake assist
IC
Ignition control
ICC
Intelligent cruise control
ICM
Ignition control module
IPDM E/R
Intelligent power distribution module engine room
ISC
Idle speed control
ISS
Input shaft speed
ITS
Information technology suite
IVC
In-Nissan Murano vehicle communications
K ABBREVIATION DESCRIPTION
KS
Knock sensor
L ABBREVIATION DESCRIPTION
LBC
Li-ion battery controller
LCD
Liquid crystal display
LCU
Local control unit
LDP
Lane departure prevention
LDW
Lane departure warning
LED
Light emitting diode
LH
Left-hand
LHD
Left-hand drive
LIN
Local interconnect network
M ABBREVIATION DESCRIPTION
M/T
Manual transaxle/transmission
MAF
Mass airflow
MAP
Manifold absolute pressure
MDU
Multi display unit
MI
Malfunction indicator
MIL
Malfunction indicator lamp
MOD
Moving object detection
N ABBREVIATION DESCRIPTION
NOX
Nitrogen oxides
O ABBREVIATION DESCRIPTION
O2
Oxygen
O2S
Oxygen sensor
OBD
On board diagnostic
OC
Oxidation catalytic converter
OD
Overdrive
OL
Open loop
OSS
Output shaft speed
P ABBREVIATION DESCRIPTION
P/S
Power steering
PBR
Potentio balance resistor
PCV
Positive crankcase ventilation
PFCW
Predictive forward collision warning
PNP
Park/Neutral position
PSP
Power steering pressure
PTC
Positive temperature coefficient
PTO
Power takeoff
PWM
Pulse width modulation
R ABBREVIATION DESCRIPTION
RAM
Random access memory
RAS
Rear active steer
RH
Right-hand
RHD
Right-hand drive
ROM
Read only memory
RPM
Engine speed
RR
Rear
S ABBREVIATION DESCRIPTION
SAE
Society of Automotive Engineers, Inc...