Nissan Versa Note. Manual - part 354

EC-398

< DTC/CIRCUIT DIAGNOSIS >

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P2096, P2097 A/F SENSOR 1

2. Listen for an exhaust gas leak before the three way catalyst 2.
Is exhaust gas detected?

YES

>> Repair or replace.

NO

>> GO TO 4.

4.

CHECK FOR INTAKE AIR LEAK

1. Start engine and run it at idle.

2. Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?

YES

>> Repair or replace.

NO

>> GO TO 5.

5.

CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE

1. Clear the mixture ratio self-learning value. Refer to 

EC-130, "Work Procedure"

.

2. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0172 detected? Is it difficult to start engine?

YES

>> Perform trouble diagnosis for DTC P0171or P0172. Refer to 

EC-245, "DTC Logic"

 or 

EC-249,

"DTC Logic"

.

NO

>> GO TO 6.

6.

CHECK HARNESS CONNECTOR

1. Turn ignition switch OFF.

2. Disconnect A/F sensor 1 harness connector.

3. Check harness connector for water. 

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace harness connector.

7.

CHECK A/F SENSOR 1 POWER SUPPLY CIRCUIT

1. Turn ignition switch ON.

2. Check the voltage between A/F sensor 1 harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 8.

8.

DETECT MALFUNCTIONING PART

Check the following.

• IPDM E/R harness connector F42

• 20A fuse (No. 53)

• Harness for open or short between A/F sensor 1 and fuse

>> Repair or replace harness or connectors.

9.

CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between A/F sensor 1 harness connector and ECM harness connector.

Water should not exit.

A/F sensor 1

Ground

Voltage

Connector

Terminal

F12

4

Ground

Battery voltage

P2096, P2097 A/F SENSOR 1

EC-399

< DTC/CIRCUIT DIAGNOSIS >

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4. Check the continuity between ECM harness connector or A/F sensor 1 harness connector and ground.

5. Also check harness for short to power.
Is the inspection result normal?

YES

>> GO TO 10.

NO

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

10.

CHECK A/F SENSOR 1 HEATER

Refer to 

EC-172, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> GO TO 13.

11.

CHECK HEATED OXYGEN SENSOR 2

Refer to 

EC-223, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> Replace heated oxygen sensor 2. Refer to 

EX-5, "Exploded View"

.

12.

CHECK INTERMITTENT INCIDENT

Perform 

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> Repair or replace.

13.

REPLACE AIR FUEL RATIO (A/F) SENSOR 1

Replace air fuel ratio (A/F) sensor 1. Refer to 

EM-31, "Removal and Installation"

.

CAUTION:

• Discard any sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard

surface such as a concrete floor; use a new one.

• Before installing new sensor, clean exhaust system threads using oxygen sensor thread cleaner tool

[commercial service tool: (J-43897-18) or (J-43897-12)] and approved anti-seize lubricant (commer-

cial service tool).

Do you have CONSULT?

YES

>> GO TO 14.

NO

>> GO TO 15.

14.

CONFIRM A/F ADJUSTMENT DATA

With CONSULT

1. Turn ignition switch ON.

2. Select “A/F ADJ-B1” in “DATA MONITOR” mode with CONSULT.

3. Make sure that “0.000” is displayed on CONSULT screen.
Is “0.000” displayed?

YES

>> INSPECTION END

NO

>> GO TO 15.

A/F sensor 1

ECM

Continuity

Connector

Terminal

Connector

Terminal

F12

1

F11

49

Existed

2

53

A/F sensor 1

ECM

Ground

Continuity

Connector

Terminal

Connector

Terminal

F12

1

F11

49

Ground

Not existed

2

53

EC-400

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

P2096, P2097 A/F SENSOR 1

15.

CLEAR THE MIXTURE RATIO SELF-LEARNING VALUE

Clear the mixture ratio self-learning value. Refer to 

EC-130, "Work Procedure"

.

Do you have CONSULT?

YES

>> GO TO 16.

NO

>> INSPECTION END

16.

CONFIRM A/F ADJUSTMENT DATA

With CONSULT

1. Turn ignition switch ON.

2. Select “A/F ADJ-B1” in “DATA MONITOR” mode with CONSULT.

3. Make sure that “0.000” is displayed on CONSULT screen.

>> INSPECTION END

P2100, P2103 THROTTLE CONTROL MOTOR RELAY

EC-401

< DTC/CIRCUIT DIAGNOSIS >

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P2100, P2103 THROTTLE CONTROL MOTOR RELAY

DTC Logic

INFOID:0000000009020892

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.

TESTING CONDITION:

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

P2100 >> GO TO 2.

P2103 >> GO TO 3.

2.

PERFORM DTC CONFIRMATION 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 DTC.
Is DTC detected?

YES

>> Go to 

EC-401, "Diagnosis Procedure"

.

NO

>> INSPECTION END

3.

PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P2103

1. Turn ignition switch ON and wait at least 1 second.

2. Check DTC.
Is DTC detected?

YES

>> Go to 

EC-401, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009020893

1.

CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I

1. Turn ignition switch OFF.

2. Check voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

DTC No.

Trouble diagnosis content

DTC detecting condition

Possible cause

P2100

Throttle control motor relay 
circuit open

ECM detects a 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

Throttle control motor relay 
circuit short

ECM detect the throttle control motor relay 
is stuck ON.

• Harness or connectors

(Throttle control motor relay circuit is shorted)

• Throttle control motor relay

ECM

Voltage

+

−

Connector

Terminal

Connector

Terminal

F10

15

E16

108

Battery voltage