Nissan Altima L32. Instruction — part 325
P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-421
< COMPONENT DIAGNOSIS >
[QR25DE FOR CALIFORNIA]
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EC
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5. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace.
8.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Remove the intake air duct.
2. Check if foreign matter is caught between the throttle valve (1)
and the housing.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Remove the foreign matter and clean the electric throttle
control actuator inside.
9.
CHECK THROTTLE CONTROL MOTOR
EC-421, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 11.
10.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Repair or replace harness or connectors.
11.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace malfunction electric throttle control actuator.
2. Go to
EC-422, "Special Repair Requirement"
.
>> INSPECTION END
Component Inspection
INFOID:0000000004349472
1.
CHECK THROTTLE CONTROL MOTOR
1. Disconnect electric throttle control actuator harness connector.
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector Terminal
F57
5
F14
5
Not existed
6
Existed
6
5
Existed
6
Not existed
2.
Electric throttle control actuator
: Vehicle front
ALBIA0061ZZ
EC-422
< COMPONENT DIAGNOSIS >
[QR25DE FOR CALIFORNIA]
P2101 ELECTRIC THROTTLE CONTROL FUNCTION
2. Check resistance between electric throttle control actuator termi-
nals as follows.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator.
2. Go to
EC-422, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000004349473
1.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-29, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
EC-30, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
Terminals
Resistance
5 and 6
Approx. 1 - 15
Ω [at 25 °C (77°F)]
PBIB2909E
P2118 THROTTLE CONTROL MOTOR
EC-423
< COMPONENT DIAGNOSIS >
[QR25DE FOR CALIFORNIA]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P2118 THROTTLE CONTROL MOTOR
Description
INFOID:0000000004349474
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.
DTC Logic
INFOID:0000000004349475
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000004349476
1.
CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E9. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect electric throttle control actuator harness connector.
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
DTC detecting condition
Possible cause
P2118
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)
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector Terminal
F57
5
F14
5
Not existed
6
Existed
6
5
Existed
6
Not existed
EC-424
< COMPONENT DIAGNOSIS >
[QR25DE FOR CALIFORNIA]
P2118 THROTTLE CONTROL MOTOR
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace.
3.
CHECK THROTTLE CONTROL MOTOR
EC-424, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace harness or connectors.
5.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator.
2. Go to
EC-424, "Special Repair Requirement"
.
>> INSPECTION END
Component Inspection
INFOID:0000000004349477
1.
CHECK THROTTLE CONTROL MOTOR
1. Disconnect electric throttle control actuator harness connector.
2. Check resistance between electric throttle control actuator termi-
nals as follows.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator.
2. Go to
EC-424, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000004349478
1.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-29, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
EC-30, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
Terminals
Resistance
5 and 6
Approx. 1 - 15
Ω [at 25 °C (77°F)]
PBIB2909E
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