Nissan Quest E52. Instruction — part 547
EC-398
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P2101 ELECTRIC THROTTLE CONTROL FUNCTION
3.
Disconnect IPDM E/R harness connector.
4.
Check the continuity between IPDM E/R harness connector and ECM harness connector.
5.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT
1.
Check the continuity between IPDM E/R harness connector and ECM harness connector.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair open circuit, short to ground or short to power in harness or connectors.
4.
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 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 5.
NO
>> Repair or replace malfunctioning part.
5.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1.
Remove the intake air duct. Refer to
.
2.
Check if foreign matter is caught between the throttle valve (1)
and the housing.
-
Electric throttle control actuator (2)
-
: Vehicle front
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Remove the foreign matter and clean the electric throttle
control actuator inside, refer to
,
and then perform throttle valve closed position learning.
Refer to
.
IPDM E/R
ECM
Continuity
Connector
Terminal
Connector
Terminal
F12
70
F7
34
Existed
IPDM E/R
ECM
Continuity
Connector
Terminal
Connector
Terminal
F12
54
F7
1
Existed
Electric throttle control actuator
ECM
Continuity
Connector
Terminal
Connector
Terminal
F29
5
F7
5
Not existed
2
Existed
6
5
Existed
2
Not existed
JMBIA1132ZZ
P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-399
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
6.
CHECK THROTTLE CONTROL MOTOR
Check throttle control motor. Refer to
EC-399, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace electric throttle control actuator. Refer to
7.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace electric throttle control actuator. Refer to
NO
>> Repair or replace error-detected parts.
Component Inspection
INFOID:0000000009651253
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 terminals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace electric throttle control actuator. Refer to
Terminals
Resistance
5 and 6
Approx. 1 - 15
Ω
[at 25
°
C (77
°
F)]
EC-400
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P2118 THROTTLE CONTROL MOTOR
P2118 THROTTLE CONTROL MOTOR
DTC Logic
INFOID:0000000009651254
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
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009651255
1.
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.
4.
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.
2.
CHECK THROTTLE CONTROL MOTOR
Check throttle control motor. Refer to
EC-401, "Component Inspection"
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
NO
>> Replace electric throttle control actuator. Refer to
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
F29
5
F7
5
Not existed
2
Existed
6
5
Existed
2
Not existed
P2118 THROTTLE CONTROL MOTOR
EC-401
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Component Inspection
INFOID:0000000009651256
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 terminals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace electric throttle control actuator. Refer to
Terminals
Resistance
5 and 6
Approx. 1 - 15
Ω
[at 25
°
C (77
°
F)]
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