Nissan Pathfinder (2012 year). Manual - part 285

 

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Nissan Pathfinder (2012 year). Manual - part 285

 

 

P1805 BRAKE SWITCH

EC-361

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

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Component Inspection

INFOID:0000000007358316

STOP LAMP SWITCH

1. Disconnect stop lamp switch harness connector.

2. Check continuity between stop lamp switch terminals 1 and 2

under the following conditions.

3. If NG, adjust stop lamp switch installation, refer to 

BR-17,

"Inspection and Adjustment - Standard Pedal"

 or 

BR-18,

"Inspection and Adjustment - Adjustable Pedal"

, and perform

step 2 again.

BBIA0560E

Conditions

Continuity

Brake pedal: Fully released

Should not exist.

Brake pedal: Slightly depressed

Should exist.

PBIB1185E

August 2012

2012 Pathfinder

EC-362

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P2100, P2103 THROTTLE CONTROL MOTOR RELAY

P2100, P2103 THROTTLE CONTROL MOTOR RELAY

Component Description

INFOID:0000000007358317

Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle

control motor relay is controlled ON/OFF by the ECM. When the ignition switch is turned ON, the ECM sends

an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition

switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not

provided to the ECM.

On Board Diagnosis Logic

INFOID:0000000007358318

These self-diagnoses have the one trip detection logic.

FAIL-SAFE MODE

When the malfunction is detected, ECM enters fail-safe mode and the MlL illuminate.

DTC Confirmation Procedure

INFOID:0000000007358319

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step.

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.

PROCEDURE FOR DTC P2100

1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check 1st trip DTC.
4. If DTC is detected, go to 

EC-362, "Diagnosis Procedure"

.

PROCEDURE FOR DTC P2103

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 8V.

1. Turn ignition switch ON and wait at least 1 second.
2. Check DTC.
3. If DTC is detected, go to 

EC-362, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007358320

1.

CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I

1. Turn ignition switch OFF.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2100
2100

Throttle control motor 
relay circuit open

ECM detects that the voltage of power source 
for throttle control motor is excessively low.

• Harness or connectors

(Throttle control motor relay circuit is 
open)

• Throttle control motor relay

P2103
2103

Throttle control motor 
relay circuit short

ECM detects that the throttle control motor relay 
is stuck ON.

• Harness or connectors

(Throttle control motor relay circuit is 
shorted)

• Throttle control motor relay

Engine operating condition in fail-safe mode

ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return 
spring.

August 2012

2012 Pathfinder

P2100, P2103 THROTTLE CONTROL MOTOR RELAY

EC-363

< DTC/CIRCUIT DIAGNOSIS >

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2. Check voltage between ECM terminal 104 and ground with

CONSULT or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 2.

2.

CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II

1. Disconnect ECM harness connector.

2. Disconnect IPDM E/R harness connector E122.

3. Check 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 3.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

3.

CHECK FUSE

1. Disconnect 20 A fuse (No.52). For the fuse arrangement, refer to 

PG-75, "IPDM E/R Terminal Arrange-

ment"

.

2. Check if 20A fuse is blown.
OK or NG

OK

>> GO TO 7.

NG

>> Replace 20A fuse.

4.

CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I

1. Check voltage between ECM terminal 3 and ground under the

following conditions with CONSULT or tester.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 5.

5.

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 E119.

4. Check continuity between ECM terminal 3 and IPDM E/R terminal 6.

Refer to Wiring Diagram.

5. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

Voltage: Battery voltage

PBIB1171E

Continuity should exist.

Ignition switch

Voltage

OFF

Approximately 0V

ON

Battery voltage

(11 - 14V)

MBIB0028E

Continuity should exist.

August 2012

2012 Pathfinder

EC-364

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P2100, P2103 THROTTLE CONTROL MOTOR RELAY

6.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E2, F32

• 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 INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

OK or NG

OK

>> Replace IPDM E/R. Refer to 

PCS-29, "Removal and Installation of IPDM E/R"

.

NG

>> Repair or replace harness or connectors.

August 2012

2012 Pathfinder

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-365

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P2101 ELECTRIC THROTTLE CONTROL FUNCTION

Description

INFOID:0000000007358321

NOTE:

If DTC P2101 is displayed with DTC P2100 or P2119, first perform the trouble diagnosis for DTC P2100

or P2119. Refer to 

EC-362

or 

EC-371

.

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. The throttle position

sensor provides feedback to the ECM, when opens/closes the throttle valve in response to driving conditions

via the throttle control motor.

On Board Diagnosis Logic

INFOID:0000000007358322

This self-diagnosis has the one trip detection logic.

FAIL-SAFE MODE

When the malfunction is detected, ECM enters fail-safe mode and the MIL illuminates.

DTC Confirmation Procedure

INFOID:0000000007358323

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step.

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.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 11V when the

engine is running.

1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
4. If DTC is detected, go to 

EC-365, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007358324

1.

CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2101
2101

Electric throttle control 
performance 

Electric throttle control function does not oper-
ate properly.

• Harness or connectors

(Throttle control motor circuit is open or 
shorted)

• Electric throttle control actuator

Engine operating condition in fail-safe mode

ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return 
spring.

August 2012

2012 Pathfinder

EC-366

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

2. Loosen and retighten three ground screws on the body. Refer to 

EC-97, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

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 or tester.

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 3.

3.

CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I

1. Turn ignition switch OFF.

2. Check voltage between ECM terminal 104 and ground with

CONSULT or tester.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 4.

4.

CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-II

1. Disconnect ECM harness connector.

2. Disconnect IPDM E/R harness connector E122.

3. Check 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 5.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK FUSE

1. Disconnect 20 A fuse (No.52). For the fuse arrangement, refer to 

PG-75, "IPDM E/R Terminal Arrange-

ment"

.

2. Check 20A fuse for blown.

BBIA0539E

Ignition switch

Voltage

OFF

Approximately 0V

ON

Battery voltage

(11 - 14V)

MBIB0028E

Voltage: Battery voltage

PBIB1171E

Continuity should exist.

August 2012

2012 Pathfinder

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-367

< DTC/CIRCUIT DIAGNOSIS >

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OK or NG

OK

>> GO TO 8.

NG

>> Replace 20A fuse.

6.

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 E119.

4. Check continuity between ECM terminal 3 and IPDM E/R terminal 6.

Refer to Wiring Diagram.

5. 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 E2, F32

• 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-37, "Intermittent Incident"

.

OK or NG

OK

>> Replace IPDM E/R. Refer to 

PCS-29, "Removal and Installation of IPDM E/R"

.

NG

>> 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 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 10.

NG

>> Repair or replace.

10.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY 

1. Remove the intake air duct. Refer to 

EM-26, "Removal and Installation"

.

Continuity should exist.

Electric throttle control 

actuator terminal

ECM terminal

Continuity

5

5

Should not exist

4

Should exist

6

5

Should exist

4

Should not exist

BBIA0543E

August 2012

2012 Pathfinder

EC-368

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE]

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

2. Check if foreign matter is caught between the throttle valve and

the housing.

OK or NG

OK

>> GO TO 11.

NG

>> Remove the foreign matter and clean the electric throttle

control actuator inside, and then perform throttle valve

closed position learning. Refer to 

EC-25, "Throttle Valve

Closed Position Learning"

.

11.

CHECK THROTTLE CONTROL MOTOR

Refer to 

EC-368, "Component Inspection"

.

OK or NG

OK

>> GO TO 12.

NG

>> GO TO 13.

12.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-37, "Intermittent Incident"

.

OK or NG

OK

>> GO TO 13.

NG

>> Repair or replace harness or connectors.

13.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

Replace the electric throttle control actuator .Refer to 

EM-27, "Removal and Installation"

.

>>

INSPECTION END

Component Inspection

INFOID:0000000007358325

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. Refer to 

EM-27,

"Removal and Installation"

.

BBIA0554E

Resistance: Approximately 1 - 15 

 [at 25 

°

C (77

°

F)]

PBIB2606E

August 2012

2012 Pathfinder

 

 

 

 

 

 

 

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