Nissan Frontier D40. Manual - part 466

 

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Nissan Frontier D40. Manual - part 466

 

 

P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER

EC-555

< COMPONENT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER

Description

INFOID:0000000005273510

SYSTEM DESCRIPTION

The ECM performs ON/OFF duty control of the A/F sensor 1 heater corresponding to the engine operating
condition to keep the temperature of A/F sensor 1 element within the specified range.

On Board Diagnosis Logic

INFOID:0000000005273511

DTC Confirmation Procedure

INFOID:0000000005273512

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting 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 between 10.5V and 16V at
idle.
1.

Start engine and let it idle for at least 10 seconds.

2.

Check 1st trip DTC.

3.

If 1st trip DTC is detected, go to 

EC-555, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005273513

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

Sensor

Input Signal to ECM

ECM function

Actuator

Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)

Engine speed

Air fuel ratio (A/F) sensor 1 
heater control

Air fuel ratio (A/F) sensor 1 heater

Mass air flow sensor

Amount of intake air

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0031
0031
(Bank 1)

Air fuel ratio (A/F) sensor 
1 heater control circuit low

The current amperage in the A/F sensor 1 heater 
circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM 
through the A/F sensor 1 heater.)

• Harness or connectors

(The A/F sensor 1 heater circuit is 
open or shorted.)

• A/F sensor 1 heater

P0051
0051
(Bank 2)

P0032
0032
(Bank 1)

Air fuel ratio (A/F) sensor 
1 heater control circuit 
high

The current amperage in the A/F sensor 1 heater 
circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM 
through the A/F sensor 1 heater.)

• Harness or connectors

(The A/F sensor 1 heater circuit is 
shorted.)

• A/F sensor 1 heater

P0052
0052
(Bank 2)

EC-556

< COMPONENT DIAGNOSIS >

[VQ40DE]

P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER

2.

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

EC-549, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or Replace ground connections.

2.

CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT

1.

Disconnect air fuel ratio (A/F) sensor 1 harness connector.

2.

Turn ignition switch ON.

3.

Check voltage between air fuel ratio sensor 1 terminal 4 and
ground with CONSULT-III or tester.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E2, F32
• IPDM E/R harness connector E119
• 15 A fuse (No.54)
• Harness for open or short between air fuel ratio sensor 1 and fuse

>> Repair or replace harness or connectors.

4.

CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER OUTPUT SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between ECM terminal 2 (bank 1) or 24, 43 (bank 2) and air fuel ratio (A/F) sen-
sor 1 terminal 3.
Refer to Wiring Diagram.

4.

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

BBIA0539E

Voltage: Battery voltage

BBIA0544E

PBIB3308E

Continuity should exist.

P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER

EC-557

< COMPONENT DIAGNOSIS >

[VQ40DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

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 AIR FUEL RATIO (A/F) SENSOR 1 HEATER

Refer to 

EC-557, "Component Inspection"

.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 7.

6.

CHECK INTERMITTENT INCIDENT

Perfor

GI-46, "Intermittent Incident"

.

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace.

7.

REPLACE AIR FUEL RATIO (A/F) SENSOR 1

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

CAUTION:

• Discard any air fuel ratio (A/F) 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 air fuel ratio (A/F) sensor, clean exhaust system threads using Heated Oxygen

Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.

>> INSPECTION END

Component Inspection

INFOID:0000000005273514

AIR FUEL RATIO (A/F) SENSOR 1 HEATER

1.

Check resistance between A/F sensor 1 terminals as follows.

2.

If NG, replace air fuel ratio (A/F) sensor 1.

CAUTION:

• Discard any A/F 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 A/F sensor, clean exhaust system

threads using Heated Oxygen Sensor Thread Cleaner tool J-
43897-18 or J-43897-12 and approved anti-seize lubricant.

Terminal No.

Resistance

3 and 4

1.80 - 2.44 

 [at 25

°

C (77

°

F)]

3 and 1, 2

 

(Continuity should not exist)

4 and 1, 2

PBIB3309E

EC-558

< COMPONENT DIAGNOSIS >

[VQ40DE]

P0037, P0038, P0057, P0058 HO2S2 HEATER

P0037, P0038, P0057, P0058 HO2S2 HEATER

Description

INFOID:0000000005273515

SYSTEM DESCRIPTION

The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed,
amount of intake air and engine coolant temperature. 

OPERATION

On Board Diagnosis Logic

INFOID:0000000005273516

DTC Confirmation Procedure

INFOID:0000000005273517

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 between 10.5V and 16V at
idle.

 WITH CONSULT-III

1.

Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.

2.

Start engine and warm it up to the normal operating temperature.

3.

Turn ignition switch OFF and wait at least 10 seconds.

Sensor

Input signal to ECM

ECM function

Actuator

Camshaft position sensor (PHASE)
Crankshaft position sensor (POS)

Engine speed

Heated oxygen sensor 2 
heater control

Heated oxygen sensor 2 heater

Engine coolant temperature sensor

Engine coolant temperature

Mass air flow sensor

Amount of intake air

Engine speed rpm

Heated oxygen sensor 2 heater

Above 3,600

OFF

Below 3,600 rpm after the following conditions are met.
• Engine: After warming up
• Keeping the engine speed between 3,500 and 4,000 rpm for 1 

minute and at idle for 1 minute under no load

ON

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

P0037
0037
(Bank 1)

Heated oxygen 
sensor 2 heater 
control circuit low

The current amperage in the heated oxygen sen-
sor 2 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM 
through the heated oxygen sensor 2 heater.)

• Harness or connectors

(The heated oxygen sensor 2 heater circuit is 
open or shorted.)

• Heater oxygen sensor 2 heater

P0057
0057
(Bank 2)

P0038
0038
(Bank 1)

Heated oxygen 
sensor 2 heater 
control circuit high

The current amperage in the heated oxygen sen-
sor 2 heater circuit is out of the normal range.
(An excessively high voltage signal is sent to ECM 
through the heated oxygen sensor 2 heater.)

• Harness or connectors

(The heated oxygen sensor 2 heater circuit is 
shorted.)

• Heater oxygen sensor 2 heater

P0058
0058
(Bank 2)

 

 

 

 

 

 

 

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