1999 NISSAN PRIMERA heater

3 CHECK HARNESS CONNECTOR
1. Turn ignition switch ªOFFº.
2. Disconnect heated oxygen sensor 1 (front) harness connector.
3. Check harness connector for water.
Water should not exit.
OK or NG
OK©GO TO 4.
NG©Repair or replace harness connector.
4 CHECK HEATED OXYGEN SENSOR 1 (FRONT) HEATER
Refer to ªComponent Inspectionº, EC-SR-179.
OK or NG
OK©GO TO 5.
NG©Replace heated oxygen sensor 1 (front).
5 CHECK HEATED OXYGEN SENSOR 1 (FRONT)
Refer to ªComponent Inspectionº, EC-SR-160.
OK or NG
OK©GO TO 6.
NG©Replace heated oxygen sensor 1 (front).
6 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-SR-114.
Refer to ªWiring Diagramº, EC-SR-147, for circuit.
©INSPECTION END
Component InspectionNCEC0118HEATED OXYGEN SENSOR 1 (FRONT)NCEC0118S02With CONSULT-II
1) Start engine and warm it up to normal operating temperature.
2) Select ªMANU TRIGº and ªHI SPEEDº in ªDATA MONITORº
mode, and select ªHO2S1 (B1)º and ªHO2S1 MNTR (B1)º.
3) Hold engine speed at 2,000 rpm under no load during the fol-
lowing steps.
4) Touch ªRECORDº on CONSULT-II screen.
5) Check the following.
IªHO2S1 MNTR (B1)º in ªDATA MONITORº mode changes from
ªRICHº to ªLEANº to ªRICHº 5 times in 10 seconds.
5 times (cycles) are counted as shown below:
R = ªHO2S1 MNTR (B1)º, ªRICHº
L = ªHO2S1 MNTR (B1)º, ªLEANº
IªHO2S1 (B1)º voltage goes above 0.6V at least once.
IªHO2S1 (B1)º voltage goes below 0.3V at least once.
IªHO2S1 (B1)º voltage never exceeds 1.0V.
CAUTION:
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.
SEF646Y
SEF647Y
DTC P0132 HEATED OXYGEN SENSOR 1
(FRONT) (RICH SHIFT MONITORING)SR20DE
Diagnostic Procedure (Cont'd)
EC-160

On Board Diagnosis LogicNCEC0122To judge the malfunction of heated oxygen sensor 1 (front), this
diagnosis measures response time of heated oxygen sensor 1
(front) signal. The time is compensated by engine operating (speed
and load), fuel feedback control constant, and heated oxygen sen-
sor 1 (front) temperature index. Judgment is based on whether the
compensated time (heated oxygen sensor 1 (front) cycling time
index) is inordinately long or not.
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0133
0133IThe response of the voltage signal from the sensor takes
more than the specified time.IHarness or connectors
(The sensor circuit is open or shorted.)
IHeated oxygen sensor 1 (front)
IHeated oxygen sensor 1 (front) heater
IFuel pressure
IInjectors
IIntake air leaks
IExhaust gas leaks
IPCV
IMass air flow sensor
DTC Confirmation ProcedureNCEC0123CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If ªDTC Confirmation Procedureº has been previously conducted,
always turn ignition switch ªOFFº and wait at least 9 seconds
before conducting the next test.
TESTING CONDITION:
IAlways perform at a temperature above þ10ÉC (14ÉF).
IBefore performing the following procedure, confirm that
battery voltage is more than 11V at idle.
With CONSULT-II
1) Start engine and warm it up to normal operating temperature.
2) Stop engine and wait at least 9 seconds.
3) Turn ignition switch ªONº and select ªHO2S1 (B1) P0133º of
ªHO2S1º in ªDTC WORK SUPPORTº mode with CONSULT-II.
4) Touch ªSTARTº.
5) Start engine and let it idle for at least 3.5 minutes.
NOTE:
Never raise engine speed above 3,200 rpm after this step. If
the engine speed limit is exceeded, return to step 5.
6) When the following conditions are met, ªTESTINGº will be dis-
played on the CONSULT-II screen. Maintain the conditions
continuously until ªTESTINGº changes to ªCOMPLETEDº. (It
will take approximately 20 seconds.)
SEF010V
SEF831Y
SEF832Y
SEF658Y
DTC P0133 HEATED OXYGEN SENSOR 1
(FRONT) (RESPONSE MONITORING)SR20DE
On Board Diagnosis Logic
EC-163

7 CHECK HEATED OXYGEN SENSOR 1 (FRONT) HEATER
Refer to ªComponent Inspectionº, EC-SR-179.
OK or NG
OK©GO TO 8.
NG©Replace heated oxygen sensor 1 (front).
8 CHECK HEATED OXYGEN SENSOR 1 (FRONT)
Refer to ªComponent Inspectionº, EC-SR-169.
OK or NG
OK©GO TO 9.
NG©Replace heated oxygen sensor 1 (front).
9 CHECK MASS AIR FLOW SENSOR
Refer to ªComponent Inspectionº, EC-SR-126.
OK or NG
OK©GO TO 10.
NG©Replace mass air flow sensor.
10 CHECK PCV VALVE
Refer to ªPositive Crankcase Ventilationº, EC-SR-30.
OK or NG
OK©GO TO 11.
NG©Repair or replace PCV valve.
11 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-SR-114.
©INSPECTION END
DTC P0133 HEATED OXYGEN SENSOR 1
(FRONT) (RESPONSE MONITORING)SR20DE
Diagnostic Procedure (Cont'd)
EC-168

DescriptionNCEC0136SYSTEM DESCRIPTIONNCEC0136S01
Sensor Input Signal to ECMECM func-
tionActuator
Camshaft position sensor Engine speedHeated oxy-
gen sensor
1 (front)
heater con-
trolHeated oxygen sensor 1 (front)
heater
The ECM performs ON/OFF control of the heated oxygen sensor 1 (front) heater corresponding to the engine
operating condition.
OPERATIONNCEC0136S02
Engine speed Heated oxygen sensor 1 (front) heater
Above 3,200 rpm OFF
More than 20 seconds after exceeding 3,200 rpm ON
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0137Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
HO2S2 HTR (B1)IEngine speed: Below 3,200 rpm ON
IMore than 20 seconds after exceeding 3,200 rpm OFF
ECM Terminals and Reference ValueNCEC0138Specification data are reference values and are measured between each terminal and 48 (ECM ground).
TERMI-
NAL NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
4LHeated oxygen sensor 1
(front) heater[Engine is running]
IEngine speed is below 3,200 rpm.Approximately 0V
[Engine is running]
IMore than 20 seconds after exceeding
3,200 rpm.BATTERY VOLTAGE
(11 - 14V)
On Board Diagnosis LogicNCEC0139
DTC No. Malfunction is detected when ... Check Items (Possible Cause)
P0135
0135IThe current amperage in the heated oxygen sensor 1
(front) heater circuit is out of the normal range.
(An improper voltage drop signal is sent to ECM through
the heated oxygen sensor 1 (front) heater.)IHarness or connectors
(The heated oxygen sensor 1 (front) heater cir-
cuit is open or shorted.)
IHeated oxygen sensor 1 (front) heater
DTC Confirmation ProcedureNCEC0140NOTE:
If ªDTC Confirmation Procedureº has been previously conducted,
always turn ignition switch ªOFFº and wait at least 9 seconds
before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that bat-
tery voltage is between 10.5V and 16V at idle.
DTC P0135 HEATED OXYGEN SENSOR 1 (FRONT) HEATERSR20DE
Description
EC-175

With CONSULT-II
1) Turn ignition switch ªONº and select ªDATA MONITORº mode
with CONSULT-II.
2) Start engine and run it for at least 5 seconds at idle speed.
3) If 1st trip DTC is detected, go to ªDiagnostic Procedureº, EC-
SR-178.
With GST
1) Start engine and run it for at least 5 seconds at idle speed.
2) Turn ignition switch ªOFFº and wait at least 9 seconds.
3) Start engine and run it for at least 5 seconds at idle speed.
4) Select ªMODE 3º with GST.
5) If DTC is detected, go to ªDiagnostic Procedureº, EC-SR-178.
IWhen using GST, ªDTC Confirmation Procedureº should
be performed twice as much as when using CONSULT-II or
ECM (Diagnostic Test Mode II) because GST cannot dis-
play MODE 7 (1st trip DTC) concerning this diagnosis.
Therefore, using CONSULT-II or ECM (Diagnostic Test
Mode II) is recommended.
NEF068A
DTC P0135 HEATED OXYGEN SENSOR 1 (FRONT) HEATERSR20DE
DTC Confirmation Procedure (Cont'd)
EC-176

Wiring DiagramNCEC0141
YEC085A
DTC P0135 HEATED OXYGEN SENSOR 1 (FRONT) HEATERSR20DE
Wiring Diagram
EC-177

Diagnostic ProcedureNCEC0142
1 CHECK POWER SUPPLY
1. Turn ignition switch ªOFFº.
2. Disconnect heated oxygen sensor 1 (front) harness connector.
SEF207X3. Turn ignition switch ªONº.
4. Check voltage between terminal 3 and ground with CONSULT or tester.
SEF025XVoltage: Battery voltage
OK or NG
OK©GO TO 3.
NG©GO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors M50, F104 (M81, F115 for CVT models)
I10A fuse
IHarness for open or short between heated oxygen sensor 1 (front) and fuse
©Repair harness or connectors.
3 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between heated oxygen sensor 1 (front) harness connector terminal 1 and ECM terminal 4.
Refer to wiring diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 4.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
Heated oxygen sensor 1
(front) harness connector
Heated oxygen
sensor 1 (front)
DISCONNECT
DTC P0135 HEATED OXYGEN SENSOR 1 (FRONT) HEATERSR20DE
Diagnostic Procedure
EC-178

Component InspectionNCEC0143HEATED OXYGEN SENSOR 1 (FRONT) HEATERNCEC0143S01Check resistance between terminals 3 and 1.
Resistance: 2.3 - 4.3Wat 25ÉC (77ÉF)
Check continuity between terminals 2 and 1, 3 and 2.
Continuity should not exist.
If NG, replace the heated oxygen sensor 1 (front).
CAUTION:
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.
4 CHECK HEATED OXYGEN SENSOR 1 (FRONT) HEATER
Refer to ªComponent Inspectionº, EC-SR-179.
OK or NG
OK©GO TO 5.
NG©Replace heated oxygen sensor 1 (front).
5 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-SR-114.
©INSPECTION END
SEF026X
DISCONNECT
DTC P0135 HEATED OXYGEN SENSOR 1 (FRONT) HEATERSR20DE
Component Inspection
EC-179