Infiniti M35/M45 Y50. Manual - part 713

DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-1325

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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 10.

NG

>> GO TO 3.

3. 

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 E8.

4.

Check harness continuity between ECM terminal 3 and IPDM E/R terminal 42.
Refer to Wiring Diagram.

5.

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

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E12, F3

●

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 POWER SUPPLY CIRCUIT-I

1.

Reconnect all harness connectors disconnected.

2.

Turn ignition switch OFF.

3.

Check voltage between ECM terminal 104 and ground with
CONSULT-II or tester.

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 6.

Ignition switch

Voltage

OFF

Approximately 0V

ON

Battery voltage

(11 - 14V)

MBIB0028E

Continuity should exist.

Voltage: Battery voltage

PBIB1171E

EC-1326

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DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION

6. 

CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II

1.

Disconnect ECM harness connector.

2.

Disconnect IPDM E/R harness connector E9.

3.

Check harness 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 8.

NG

>> GO TO 7.

7. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E108, M15

●

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 FUSE

1.

Disconnect 15A fuse.

2.

Check 15A fuse for blown.

OK or NG

OK

>> GO TO 9.

NG

>> Replace 15A fuse.

9. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-857, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

OK or NG

OK

>> Replace IPDM E/R. Refer to 

PG-18, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-

ULE ENGINE ROOM)"

 .

NG

>> Repair or replace harness or connectors.

Continuity should exist.

DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION

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10. 

CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT

1.

Turn ignition switch OFF.

2.

Disconnect electric throttle control actuator (1) harness connec-
tor.

–

Illustration shows the view with intake air duct removed.

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 11.

NG

>> Repair or replace.

11. 

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.
This illustration shows the view with intake air removed.

OK or NG

OK

>> GO TO 12.

NG

>> Remove the foreign matter and clean the electric throttle

control actuator inside.

12. 

CHECK THROTTLE CONTROL MOTOR

Refer to 

EC-1328, "Component Inspection"

 .

OK or NG

OK

>> GO TO 13.

NG

>> GO TO 14.

13. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-857, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

OK or NG

OK

>> GO TO 14.

NG

>> Repair or replace harness or connectors.

Electric throttle control 

actuator terminal

ECM terminal

Continuity

5

5

Should not exist.

4

Should exist.

6

5

Should exist.

4

Should not exist.

PBIB2690E

PBIB2722E

EC-1328

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DTC P2101 ELECTRIC THROTTLE CONTROL FUNCTION

14. 

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.

Replace the electric throttle control actuator.

2.

Perform 

EC-788, "Throttle Valve Closed Position Learning"

 .

3.

Perform 

EC-788, "Idle Air Volume Learning"

 .

>> INSPECTION END

Component Inspection

NBS005O4

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-788, "Throttle Valve Closed Position Learning"

 .

5.

Perform 

EC-788, "Idle Air Volume Learning"

 .

Removal and Installation

NBS005O5

ELECTRIC THROTTLE CONTROL ACTUATOR

Refer to 

EM-179, "INTAKE MANIFOLD"

 .

Resistance: Approximately 1 - 15 

Ω

 [at 25 

°

C (77

°

F)]

PBIB2909E