Nissan Maxima. Manual — part 494
EC-460
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P2101 ELECTRIC THROTTLE CONTROL FUNCTION
3. Disconnect ECM harness connector.
4. Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
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 malfunctioning part.
8.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Remove the intake air duct. Refer to
EM-24, "Removal and Installation"
.
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, and then perform throttle valve
closed position learning. Refer to
VALVE CLOSED POSITION LEARNING : Special
.
9.
CHECK THROTTLE CONTROL MOTOR
EC-460, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 11.
10.
CHECK INTERMITTENT INCIDENT
GI-41, "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 electric throttle control actuator. Refer to
EM-25, "Removal and Installation"
2. Refer to
EC-461, "Special Repair Requirement"
>> INSPECTION END
Component Inspection
INFOID:0000000010095163
1.
CHECK THROTTLE CONTROL MOTOR
1. Turn ignition switch OFF.
2. 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
ALBIA0611ZZ
P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-461
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
3. Check resistance between electric throttle control actuator termi-
nals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. Refer to
EM-25, "Removal and Installation"
.
2. Go to
EC-461, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000010095164
1.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-21, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
EC-21, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
Terminals
Resistance
5 and 6
Approx. 1 - 15
Ω [at 25°C (77°F)]
PBIB2909E
EC-462
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P2118 THROTTLE CONTROL MOTOR
P2118 THROTTLE CONTROL MOTOR
Description
INFOID:0000000010095165
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. The throttle position
sensor it provides feedback to the ECM, when opens/closes the throttle valve in response to driving conditions
via the throttle control motor.
DTC Logic
INFOID:0000000010095166
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
>> 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:0000000010095167
Regarding Wiring Diagram information, refer to
.
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)
P2118 THROTTLE CONTROL MOTOR
EC-463
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
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 malfunctioning part.
3.
CHECK THROTTLE CONTROL MOTOR
EC-463, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
CHECK INTERMITTENT INCIDENT
GI-41, "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. Refer to
EM-25, "Removal and Installation"
.
2. Go to
EC-464, "Special Repair Requirement"
.
>> INSPECTION END
Component Inspection
INFOID:0000000010095168
1.
CHECK THROTTLE CONTROL MOTOR
1. Turn ignition switch OFF.
2. Disconnect electric throttle control actuator harness connector.
3. Check resistance between electric throttle control actuator termi-
nals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. Refer to
EM-25, "Removal and Installation"
.
2. Go to
EC-461, "Special Repair Requirement"
.
>> INSPECTION END
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F57
5
F14
5
Not existed
6
Existed
6
5
Existed
6
Not existed
Terminals
Resistance
5 and 6
Approx. 1 - 15
Ω [at 25°C (77°F)]
PBIB2909E
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