Infiniti M45 (Y34). Manual — part 381
DTC P0128 THERMOSTAT FUNCTION
EC-213
C
D
E
F
G
H
I
J
K
L
M
A
EC
Component Inspection
ABS002GK
ENGINE COOLANT TEMPERATURE SENSOR
Check resistance as shown in the figure.
<Reference data>
If NG, replace engine coolant temperature sensor.
Removal and Installation
ABS002GL
ENGINE COOLANT TEMPERATURE SENSOR
Refer to
.
PBIB2005E
Temperature
°
C (
°
F)
Resistance k
Ω
20 (68)
2.1 - 2.9
50 (122)
0.68 - 1.0
90 (194)
0.236 - 0.260
SEF012P
EC-214
DTC P0132, P0152 HO2S1
DTC P0132, P0152 HO2S1
PFP:22690
Component Description
ABS002GM
The heated oxygen sensor 1 is placed into the exhaust manifold. It
detects the amount of oxygen in the exhaust gas compared to the
outside air. The heated oxygen sensor 1 has a closed-end tube
made of ceramic zirconia. The zirconia generates voltage from
approximately 1V in richer conditions to 0V in leaner conditions. The
heated oxygen sensor 1 signal is sent to the ECM. The ECM adjusts
the injection pulse duration to achieve the ideal air-fuel ratio. The
ideal air-fuel ratio occurs near the radical change from 1 to 0V.
CONSULT-II Reference Value in Data Monitor Mode
ABS002GN
Specification data are reference values.
On Board Diagnosis Logic
ABS002GO
To judge the malfunction, the diagnosis checks that the heated oxy-
gen sensor 1 output is not inordinately high.
SEF463R
SEF288D
MONITOR ITEM
CONDITION
SPECIFICATION
HO2S1 (B1)
HO2S1 (B2)
●
Engine: After warming up
Maintaining engine speed at 2,000 rpm
0 - 0.3V
←→
Approx. 0.6 - 1.0V
HO2S1 MNTR (B1)
HO2S1 MNTR (B2)
●
Engine: After warming up
Maintaining engine speed at 2,000 rpm
LEAN
←→
RICH
Changes more than 5 times during
10 seconds.
PBIB1877E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0132
0132
(Bank 1)
Heated oxygen sensor 1
circuit high voltage
An excessively high voltage from the sensor is
sent to ECM.
●
Harness or connectors
(The sensor circuit is open or shorted)
●
Heated oxygen sensor 1
P0152
0152
(Bank 2)
DTC P0132, P0152 HO2S1
EC-215
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC Confirmation Procedure
ABS002GP
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.
WITH CONSULT-II
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Turn ignition switch ON.
4.
Select “DATA MONITOR” mode with CONSULT-II.
5.
Restart engine and let it idle for 2 minutes.
6.
If 1st trip DTC is detected, go to
EC-219, "Diagnostic Procedure"
.
WITH GST
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Restart engine and let it idle for 2 minutes.
4.
Turn ignition switch OFF and wait at least 10 seconds.
5.
Restart engine and let it idle for 2 minutes.
6.
Select “MODE 3” with GST.
7.
If 1st trip DTC is detected, go to
EC-219, "Diagnostic Procedure"
●
When using GST, DTC Confirmation Procedure should be performed twice as much as when using
CONSULT-II because GST cannot display MODE 7 (1st trip DTC) concerning this diagnosis. There-
fore, using CONSULT-II is recommended.
SEF174Y
EC-216
DTC P0132, P0152 HO2S1
Wiring Diagram
ABS002GQ
BANK 1
TBWA0274E
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