Nissan Frontier D22. Manual — part 555
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-1323
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
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
–
Engine: After warning up
–
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)
EC-1324
[VG33ER]
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
Diagnostic Procedure
UBS00DT8
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
BBIA0187E
Voltage: Battery voltage
SEF637W
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-1325
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
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-1325, "Component Inspection"
OK or NG
OK
>> GO TO 6.
NG
>> Replace malfunctioning heated oxygen sensor 2.
6.
CHECK INTERMITTENT INCIDENT
Refer to
EC-1297, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END.
Component Inspection
UBS00DT9
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.
EC-1326
[VG33ER]
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
1.
Check resistance between HO2S2 terminals 2 and 3.
2.
Check continuity.
CAUTION:
●
Discard any heated oxygen 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 oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Removal and Installation
UBS00DTA
HEATED OXYGEN SENSOR 2
.
Resistance: 2.3 - 4.3
Ω at 25°C (77°F)
SEF716W
Terminal No.
Continuity
1 and 2, 3, 4
No
4 and 1, 2, 3
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