Nissan Cube. Manual - part 372

EC-374

< DTC/CIRCUIT DIAGNOSIS >

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P2100, P2103 THROTTLE CONTROL MOTOR RELAY

5.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 7.

7.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E8, F1
• 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 

GI-40, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-34, "Removal and Installation"

 (With I-KEY) or 

PCS-64,

"Removal and Installation"

 (Without I-KEY).

NO

>> Repair or replace harness or connectors.

ECM

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

F7

2

E15

54

Existed

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-375

< DTC/CIRCUIT DIAGNOSIS >

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P2101 ELECTRIC THROTTLE CONTROL FUNCTION

Description

INFOID:0000000009947502

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.
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. ECM controls the throttle valve opening angle in response to driving condition via the throttle
control motor.

DTC Logic

INFOID:0000000009947503

DTC DETECTION LOGIC

NOTE:
• If DTC P2101 is displayed with DTC P2100, first perform the trouble diagnosis for DTC P2100. Refer

to 

EC-372, "DTC Logic"

.

• If DTC P2101 is displayed with DTC P2119, first perform the trouble diagnosis for DTC P2119. Refer

to 

EC-381, "DTC 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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V when
engine is running.

>> 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 

EC-375, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009947504

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E38. Refer to 

GI-43, "Circuit Inspection"

. 

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I

1.

Check the voltage between ECM harness connector and ground under the following conditions.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2101

Electric throttle control 
performance

Electric throttle control function does not 
operate properly.

• Harness or connectors

(Throttle control motor circuit is open or shorted)

• Electric throttle control actuator

EC-376

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 3.

3.

CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Disconnect IPDM E/R harness connector.

4.

Check the continuity between ECM harness connector and IPDM E/R harness connector.

5.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E8, F8
• 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.

5.

CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II

1.

Check the continuity between ECM harness connector and IPDM E/R harness connector.

2.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E8, F1
• 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.

7.

CHECK FUSE

1.

Disconnect 15 A fuse (No. 64) from IPDM E/R.

2.

Check 15 A fuse for blown.

Is the inspection result normal?

ECM

Ground

Condition

Voltage

Connector

Terminal

F7

2

Ground

Ignition switch: 
OFF

Approx. 0 V

Ignition switch: 
ON

Battery voltage

IPDM E/R

ECM

Continuity

Connector

Terminal

Connector

Terminal

E15

57

F7

15

Existed

IPDM E/R

ECM

Continuity

Connector

Terminal

Connector

Terminal

E15

54

F7

2

Existed

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-377

< DTC/CIRCUIT DIAGNOSIS >

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YES

>> GO TO 8.

NO

>> Replace 15 A fuse.

8.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-34, "Removal and Installation"

 (With I-KEY) or 

PCS-64,

"Removal and Installation"

 (Without I-KEY).

NO

>> 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 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 10.

NO

>> Repair or replace.

10.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY 

1.

Remove the intake air duct. Refer to 

EM-24, "Exploded View"

.

2.

Check if foreign matter is caught between the throttle valve (1)
and the housing.

-

Electric throttle control actuator (2)

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Remove the foreign matter and clean the electric throttle

control actuator inside, and then perform throttle valve
closed position learning. Refer to 

EC-19, "THROTTLE

VALVE CLOSED POSITION LEARNING : Special
Repair Requirement"

.

11.

CHECK THROTTLE CONTROL MOTOR

Refer to 

EC-378, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> GO TO 13.

12.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> Repair or replace harness or connectors.

13.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace malfunction electric throttle control actuator.

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F29

5

F7

1

Not existed

4

Existed

6

1

Existed

4

Not existed

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