Infiniti Q45 (FY33). Manual — part 160
BANK 1
TEC783
GI
MA
EM
LC
FE
AT
PD
FA
RA
BR
ST
RS
BT
HA
EL
IDX
TROUBLE DIAGNOSIS FOR DTC P0130 (B1), P0150 (B2)
Heated Oxygen Sensor 1 (Front) (P0130: Bank
1), (P0150: Bank 2) (Circuit) (Cont’d)
EC-169
BANK 2
TEC784
TROUBLE DIAGNOSIS FOR DTC P0130 (B1), P0150 (B2)
Heated Oxygen Sensor 1 (Front) (P0130: Bank
1), (P0150: Bank 2) (Circuit) (Cont’d)
EC-170
SEF054TI
SEF056TH
SEF377U
SEF409WA
SEF390UA
DIAGNOSTIC PROCEDURE
INSPECTION START
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground
screws.
CHECK INPUT SIGNAL CIRCUIT.
1. Turn ignition switch “OFF”.
2. Disconnect corresponding heated oxy-
gen sensor 1 (front) harness connector
and ECM harness connector.
3. Check harness continuity between ECM
and sensor terminals.
Continuity should exist.
4. Check harness continuity between ECM
and sensor or ground.
Continuity should not exist.
If OK, check harness for short to
ground and short to power.
OK
E
NG
Repair harness or connec-
tors.
CHECK COMPONENT
[Heated oxygen sensor 1 (front)].
Refer to “COMPONENT INSPECTION” on
next page.
OK
E
NG
REPLACE HO2S1 (front).
1. Check front HO2S har-
ness protector color.
Black: Left bank (B1)
Blue: Right bank (B2)
2. Replace malfunctioning
HO2S1 (front).
Perform “TROUBLE DIAGNOSIS FOR
INTERMITTENT INCIDENT”, EC-117.
INSPECTION END
DTC
Terminals
Bank
(Harness
protector
color)
ECM
Sensor
P0130
83
2
Bank 1
(Black)
P0150
82
2
Bank 2
(Blue)
DTC
Terminals
Bank
(Harness
protector
color)
ECM or
sensor
Ground
P0130
83 or 2
Ground
Bank 1
(Black)
P0150
82 or 2
Ground
Bank 2
(Blue)
GI
MA
EM
LC
FE
AT
PD
FA
RA
BR
ST
RS
BT
HA
EL
IDX
TROUBLE DIAGNOSIS FOR DTC P0130 (B1), P0150 (B2)
Heated Oxygen Sensor 1 (Front) (P0130: Bank
1), (P0150: Bank 2) (Circuit) (Cont’d)
H
H
H
H
H
EC-171
SEF977Z
COMPONENT INSPECTION
Heated oxygen sensor 1 (front)
1) Start engine and warm it up to normal operating tem-
perature.
2) Select “MANU TRIG” and “HI SPEED” in “DATA MONI-
TOR” mode with CONSULT-II, and select “HO2S1 (B1)
(B2)” and “HO2S1 MNTR (B1) (B2)”.
3) Hold engine speed at 2,000 rpm under no load during
the following steps.
4) Touch “RECORD” on CONSULT-II screen.
5) Check the following.
I
“HO2S1 MNTR (B1) (B2)” in “DATA MONITOR” mode
changes from “RICH” to “LEAN” to “RICH” 5 times in 10
seconds.
5 times (cycles) are counted as shown below:
cycle | 1 | 2 | 3 | 4 | 5 |
HO2S1 MNTR (B1) R-L-R-L-R-L-R-L-R-L-R
R = “HO2S1 MNTR (B1) (B2)”, “RICH”
L = “HO2S1 MNTR (B1) (B2)”, “LEAN”
I
“HO2S1 (B1) (B2)” voltage goes above 0.6V at least
once.
I
“HO2S1 (B1) (B2)” voltage goes below 0.30V at least
once.
I
“HO2S1 (B1) (B2)” voltage never exceeds 1.0V.
CAUTION:
I
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.
I
Before installing new oxygen sensor, clean exhaust sys-
tem threads using Oxygen Sensor Thread Cleaner tool
J-43897-18 or J-43897-12 and approved anti-seize lubri-
cant.
SEF978Z
SEF353WA
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1) Start engine and warm it up to normal operating tem-
perature.
2) Set voltmeter probes between ECM terminal
q
82
(B2),
q
83
(B1) (sensor signal) and ground.
3) Check the following with engine speed held at 2,000
rpm constant under no load.
I
Malfunction indicator lamp goes on more than 5 times
within 10 seconds in Diagnostic Test Mode II [HEATED
OXYGEN SENSOR 1 MONITOR (FRONT), EC-68].
I
The maximum voltage is over 0.6V at least one time.
I
The minimum voltage is below 0.30V at least one time.
TROUBLE DIAGNOSIS FOR DTC P0130 (B1), P0150 (B2)
Heated Oxygen Sensor 1 (Front) (P0130: Bank
1), (P0150: Bank 2) (Circuit) (Cont’d)
EC-172
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