Infiniti G35 (V35). Manual — part 326
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-185
C
D
E
F
G
H
I
J
K
L
M
A
EC
Wiring Diagram
NBS000OK
BANK 1
TBWM1613E
EC-186
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 ECM terminals, such as the ground.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
25
P/B
Heated oxygen sensor 2
heater (bank 1)
[Engine is running]
●
Engine speed: 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.
0 - 1.0V
[Ignition switch: ON]
●
Engine stopped
[Engine is running]
●
Engine speed: Above 3,600 rpm
BATTERY VOLTAGE
(11 - 14V)
74
L/B
Heated oxygen sensor 2
(bank 1)
[Engine is running]
●
Revving engine from idle to 3,000 rpm
quickly 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.
0 - Approximately 1.0V
78
B/Y
Sensor ground
(Heated oxygen sensor)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-187
C
D
E
F
G
H
I
J
K
L
M
A
EC
BANK 2
TBWM1614E
EC-188
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 ECM terminals, such as the ground.
Diagnostic Procedure
NBS000OL
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten two ground screws on the body. Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
6
BR/W
Heated oxygen sensor 2
heater (bank 2)
[Engine is running]
●
Engine speed: 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.
0 - 1.0V
[Ignition switch: ON]
●
Engine stopped
[Engine is running]
●
Engine speed: Above 3,600 rpm
BATTERY VOLTAGE
(11 - 14V)
55
R/Y
Heated oxygen sensor 2
(bank 2)
[Engine is running]
●
Revving engine from idle to 3,000 rpm
quickly after the following conditions are
met.
–
Engine: After warming up
–
After keeping the engine speed between
3,500 and 4,000 rpm for 1 minute and at idle
for 1 minute under no load.
0 - Approximately 1.0V
78
B/Y
Sensor ground
(Heated oxygen sensor)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
PBIB2192E
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