Infiniti Q45 (FY33). Manual - part 167
Diagnostic Trouble
Code No.
Malfunction is detected when ...
Check Items
(Possible Cause)
P0134
0142
(Bank 1)
I
An excessively high voltage from the sensor is sent to ECM.
I
Harness or connectors
(The sensor circuit is open or shorted.)
I
Heated oxygen sensor 1 (front)
P0154
0509
(Bank 2)
SEC026C
DIAGNOSTIC TROUBLE CODE CONFIRMATION
PROCEDURE
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” has been previously conducted, always turn ignition
switch “OFF” and wait at least 5 seconds before conducting
the next test.
With CONSULT-II
1) Start engine and warm it up to normal operating tem-
perature.
2) Turn ignition switch “OFF” and wait at least 5 seconds.
3) Turn ignition switch “ON”.
4) Select “DATA MONITOR” mode with CONSULT-II.
5) Restart engine and let it idle for 32 seconds.
6) If 1st trip DTC is detected, go to “DIAGNOSTIC
PROCEDURE”, EC-200.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Wtih GST
1) Start engine and warm it up to normal operating tem-
perature.
2) Turn ignition switch “OFF” and wait at least 5 seconds.
3) Restart engine and let it idle for 32 seconds.
4) Turn ignition switch “OFF” and wait at least 5 seconds.
5) Restart engine and let it idle for 32 seconds.
6) Select “MODE 3” with GST.
7) If
DTC
is
detected,
go
to
“DIAGNOSTIC
PROCEDURE”, EC-200.
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Not Tools
1) Start engine and warm it up to normal operating tem-
perature.
2) Turn ignition switch “OFF” and wait at least 5 seconds.
3) Restart engine and let it idle for 32 seconds.
4) Turn ignition switch “OFF”, wait at least 5 seconds and
then turn “ON”.
5) Perform “Diagnostic Test Mode II (Self-diagnostic
results)” with ECM.
6) If 1st trip DTC is detected, go to “DIAGNOSTIC
PROCEDURE”, EC-200.
I
When using GST, “DTC CONFIRMATION PROCEDURE”
should be performed twice as much as when using CON-
SULT-II or ECM (Diagnostic Test Mode II) because GST can-
not display MODE 7 (1st trip DTC) concerning this diagno-
sis. Therefore, using CONSULT-II or ECM (Diagnostic Test
Mode II) is recommended.
GI
MA
EM
LC
FE
AT
PD
FA
RA
BR
ST
RS
BT
HA
EL
IDX
TROUBLE DIAGNOSIS FOR DTC P0134 (B1), P0154 (B2)
Heated Oxygen Sensor 1 (Front) (P0134: Bank
1), (P0154: Bank 2) (Cont’d)
EC-197