Nissan Pathfinder (2006 year). Manual — part 214
DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-571
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D
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F
G
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A
EC
2006 Pathfinder
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
UBS00KC9
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF
2.
Loosen and retighten three 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
V
Throttle control motor relay
power supply
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
4
L/W
Throttle control motor
(Close)
[Ignition switch: ON]
●
Engine: Stopped
●
Shift lever: D
●
Accelerator pedal: Fully released
0 - 14V
5
L/B
Throttle control motor
(Open)
[Ignition switch: ON]
●
Engine: Stopped
●
Shift 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
BBIA0539E
EC-572
DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION
2006 Pathfinder
2.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
Check voltage between ECM terminal 3 and ground under the fol-
lowing conditions with CONSULT-II or tester.
OK or NG
OK
>> GO TO 9.
NG
>> GO TO 3.
3.
CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I
1.
Turn ignition switch OFF.
2.
Check voltage between ECM terminal 104 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 4.
4.
CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II
1.
Disconnect ECM harness connector.
2.
Disconnect IPDM E/R harness connector E122.
3.
Check continuity between ECM terminal 104 and IPDM E/R terminal 47.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK FUSE
1.
Disconnect 20A fuse.
2.
Check 20A fuse for blown.
OK or NG
OK
>> GO TO 8.
NG
>> Replace 20A fuse.
Ignition switch
Voltage
OFF
Approximately 0V
ON
Battery voltage
(11 - 14V)
MBIB0028E
Voltage: Battery voltage
PBIB1171E
Continuity should exist.
DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-573
C
D
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F
G
H
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K
L
M
A
EC
2006 Pathfinder
6.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect IPDM E/R harness connector E119.
4.
Check continuity between ECM terminal 3 and IPDM E/R terminal 6.
Refer to Wiring Diagram.
5.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 7.
7.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E2, F32
●
Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.
CHECK INTERMITTENT INCIDENT
Refer to
EC-144, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
OK or NG
OK
PG-18, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
.
NG
>> Repair or replace harness or connectors.
9.
CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1.
Turn ignition switch OFF.
2.
Disconnect electric throttle control actuator harness connector.
3.
Disconnect ECM harness connector.
4.
Check harness continuity between the following terminals.
Refer to Wiring Diagram.
5.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 10.
NG
>> Repair or replace.
Continuity should exist.
Electric throttle control
actuator terminal
ECM terminal
Continuity
5
5
Should not exist
4
Should exist
6
5
Should exist
4
Should not exist
BBIA0543E
EC-574
DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION
2006 Pathfinder
10.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1.
Remove the intake air duct.
2.
Check if foreign matter is caught between the throttle valve and
the housing.
OK or NG
OK
>> GO TO 11.
NG
>> Remove the foreign matter and clean the electric throttle
control actuator inside.
11.
CHECK THROTTLE CONTROL MOTOR
EC-574, "Component Inspection"
OK or NG
OK
>> GO TO 12.
NG
>> GO TO 13.
12.
CHECK INTERMITTENT INCIDENT
EC-144, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
OK or NG
OK
>> GO TO 13.
NG
>> Repair or replace harness or connectors.
13.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace the electric throttle control actuator.
2.
Perform
EC-77, "Throttle Valve Closed Position Learning"
.
3.
Perform
EC-77, "Idle Air Volume Learning"
>> INSPECTION END
Component Inspection
UBS00KCA
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-77, "Throttle Valve Closed Position Learning"
.
5.
Perform
EC-77, "Idle Air Volume Learning"
Removal and Installation
UBS00KCB
ELECTRIC THROTTLE CONTROL ACTUATOR
EM-17, "INTAKE MANIFOLD COLLECTOR"
BBIA0554E
Resistance: Approximately 1 - 15
Ω
[at 25
°
C (77
°
F)]
PBIB2606E
DTC P2118 THROTTLE CONTROL MOTOR
EC-575
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EC
2006 Pathfinder
DTC P2118 THROTTLE CONTROL MOTOR
PFP:16119
Component Description
UBS00KCI
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
UBS00KCJ
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation Procedure
UBS00KCK
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.
If DTC is detected, go to
EC-577, "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-576
DTC P2118 THROTTLE CONTROL MOTOR
2006 Pathfinder
Wiring Diagram
UBS00KCL
BBWA1761E
DTC P2118 THROTTLE CONTROL MOTOR
EC-577
C
D
E
F
G
H
I
J
K
L
M
A
EC
2006 Pathfinder
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
UBS00KCM
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten three 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
V
Throttle control motor relay
power supply
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
4
L/W
Throttle control motor
(Close)
[Ignition switch: ON]
●
Engine: Stopped
●
Shift lever: D
●
Accelerator pedal: Fully released
0 - 14V
5
L/B
Throttle control motor
(Open)
[Ignition switch: ON]
●
Engine: Stopped
●
Shift 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
BBIA0539E
EC-578
DTC P2118 THROTTLE CONTROL MOTOR
2006 Pathfinder
2.
CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1.
Disconnect electric throttle control actuator harness connector.
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
EC-578, "Component Inspection"
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 5.
4.
CHECK INTERMITTENT INCIDENT
EC-144, "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-77, "Throttle Valve Closed Position Learning"
.
3.
Perform
EC-77, "Idle Air Volume Learning"
>> INSPECTION END
Component Inspection
UBS00KCN
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-77, "Throttle Valve Closed Position Learning"
.
5.
Perform
EC-77, "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
BBIA0543E
Resistance: Approximately 1 - 15
Ω
[at 25
°
C (77
°
F)]
PBIB2606E
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