Nissan Frontier D22. Manual — part 403

DTC P0037, P0038, P0057, P0058 HO2S2 HEATER

EC-715

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

BANK 2

BBWA1081E

EC-716

[VG33E]

DTC P0037, P0038, P0057, P0058 HO2S2 HEATER

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than the ECM terminals, such as the ground.

TER-

MINAL

NO.

WIRE

COLOR

ITEM

CONDITION

DATA (DC Voltage)

123

R/Y

Heated oxygen sensor 2
heater (bank 2)

[Engine is running]

●

Engine speed is below 3,600 rpm after the following
conditions are met

–

Warm-up condition

–

Keeping the engine speed between 3,500 and 4,000
rpm for 1 minute and at idle for 1 minute under no
load

0 - 1.0V

[Ignition switch: ON]

●

Engine stopped

[Engine is running]

●

Engine speed is above 3,600 rpm

BATTERY VOLTAGE
(11 - 14V)

DTC P0037, P0038, P0057, P0058 HO2S2 HEATER

EC-717

[VG33E]

C

D

E

F

G

H

I

J

K

L

M

A

EC

Diagnostic Procedure

UBS00DFZ

1.

CHECK HO2S2 POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Check heated oxygen sensor 2 harness protector color.

3.

Disconnect corresponding heated oxygen sensor 2 harness
connector.

4.

Turn ignition switch ON.

5.

Check voltage between HO2S2 terminal 3 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors M59, F27

●

Fuse block (J/B) connector M26

●

10A fuse

●

Harness for open or short between heated oxygen sensor 2 and fuse

>> Repair harness or connectors.

PBIB1423E

BBIA0181E

Voltage: Battery voltage

SEF637W

EC-718

[VG33E]

DTC P0037, P0038, P0057, P0058 HO2S2 HEATER

3.

CHECK HO2S2 HEATER OUTPUT CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between ECM terminal and HO2S2 terminal as follows.
Refer to Wiring Diagram.

4.

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.

●

Joint connector-3

●

Harness for open or short between heated oxygen sensor 2 and engine ground.

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

5.

CHECK HEATED OXYGEN SENSOR 2 HEATER

Refer to

EC-718, "Component Inspection"

.

OK or NG

OK

>> GO TO 6.

NG

>> Replace malfunctioning heated oxygen sensor 2.

6.

CHECK INTERMITTENT INCIDENT

Refer to

EC-696, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

.

>> INSPECTION END.

Component Inspection

UBS00DG0

HEATED OXYGEN SENSOR 2 HEATER

Check the following.

DTC

Terminals

Bank

ECM

Sensor

P0037,

P0038

122

2

Bank 1

P0057,

P0058

123

2

Bank 2

Continuity should exist.