Infiniti I30 (A33). Manual — part 226
Possible Cause
NHEC0435
I
Harness or connectors
(The sensor circuit is open or shorted.)
I
Heated oxygen sensor 1 (front)
I
Heated oxygen sensor 1 heater (front)
I
Fuel pressure
I
Injectors
I
Intake air leaks
I
Exhaust gas leaks
I
PCV valve
I
Mass air flow sensor
DTC Confirmation Procedure
NHEC0112
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 10 seconds
before conducting the next test.
TESTING CONDITION:
I
Always perform at a temperature above −10°C (14°F).
I
Before performing the following procedure, confirm that
battery voltage is more than 11V at idle.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0133 (BANK 1), P0153 (BANK 2) HO2S1 (FRONT) (RESPONSE
MONITORING)
Possible Cause
EC-219
SEF656Y
SEF657Y
SEF658Y
WITH CONSULT-II
NHEC0112S01
1)
Start engine and warm it up to normal operating temperature.
2)
Stop engine and wait at least 5 seconds.
3)
Turn ignition switch “ON” and select “HO2S1 (B1) P0133” or
“HO2S1 (B2) P0153” of “HO2S1” in “DTC WORK SUPPORT”
mode with CONSULT-II.
4)
Touch “START”.
5)
Start engine and let it idle for at least 3 minutes.
NOTE:
Never raise engine speed above 3,600 rpm after this step. If
the engine speed limit is exceeded, return to step 5.
6)
When the following conditions are met, “TESTING” will be dis-
played on the CONSULT-II screen. Maintain the conditions
continuously until “TESTING” changes to “COMPLETED”. (It
will take approximately 40 to 50 seconds.)
ENG SPEED
1,200 - 2,800 rpm
Vehicle speed
80 - 120 km/h (50 - 75 MPH)
B/FUEL SCHDL
3 - 9 msec
Selector lever
Suitable position
If “TESTING” is not displayed after 5 minutes, retry from
step 2.
7)
Make sure that “OK” is displayed after touching “SELF-DIAG
RESULTS”.
If
“NG”
is
displayed,
refer
to
“Diagnostic
Procedure”, EC-223.
SEF308XB
Overall Function Check
NHEC0113
Use this procedure to check the overall function of the heated oxy-
gen sensor 1 (front) circuit. During this check, a 1st trip DTC might
not be confirmed.
WITH GST
NHEC0113S01
1)
Start engine and warm it up to normal operating temperature.
2)
Set voltmeter probes between ECM terminal 63 [HO2S1 (B1)
signal] or 62 [HO2S1 (B2) signal] and engine ground.
3)
Check the following with engine speed held at 2,000 rpm con-
stant under no load.
I
The voltage fluctuates between 0 to 0.3V and 0.6 to 1.0V more
than 5 times within 10 seconds.
1 time: 0 - 0.3V
→
0.6 - 1.0V
→
0 - 0.3V
2 times: 0 - 0.3V
→
0.6 - 1.0V
→
0 - 0.3V
→
0.6 - 1.0V
→
0 - 0.3V
4)
If NG, go to “Diagnostic Procedure”, EC-223.
DTC P0133 (BANK 1), P0153 (BANK 2) HO2S1 (FRONT) (RESPONSE
MONITORING)
DTC Confirmation Procedure (Cont’d)
EC-220
Wiring Diagram
NHEC0114
BANK 1
NHEC0114S01
MEC408D
SEF854YB
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0133 (BANK 1), P0153 (BANK 2) HO2S1 (FRONT) (RESPONSE
MONITORING)
Wiring Diagram
EC-221
BANK 2
NHEC0114S02
MEC409D
SEF855YB
DTC P0133 (BANK 1), P0153 (BANK 2) HO2S1 (FRONT) (RESPONSE
MONITORING)
Wiring Diagram (Cont’d)
EC-222
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