Nissan Primera P11. Instruction — part 244
Description
NCEC0136
SYSTEM DESCRIPTION
NCEC0136S01
Sensor
Input Signal to ECM
ECM func-
tion
Actuator
Camshaft position sensor
Engine speed
Heated oxy-
gen sensor
1 (front)
heater con-
trol
Heated 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.
OPERATION
NCEC0136S02
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
NCEC0137
Specification data are reference values.
MONITOR ITEM
CONDITION
SPECIFICATION
HO2S2 HTR (B1)
I
Engine speed: Below 3,200 rpm
ON
I
More than 20 seconds after exceeding 3,200 rpm
OFF
ECM Terminals and Reference Value
NCEC0138
Specification data are reference values and are measured between each terminal and 48 (ECM ground).
TERMI-
NAL NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
4
L
Heated oxygen sensor 1
(front) heater
[Engine is running]
I
Engine speed is below 3,200 rpm.
Approximately 0V
[Engine is running]
I
More than 20 seconds after exceeding
3,200 rpm.
BATTERY VOLTAGE
(11 - 14V)
On Board Diagnosis Logic
NCEC0139
DTC No.
Malfunction is detected when ...
Check Items (Possible Cause)
P0135
0135
I
The 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.)
I
Harness or connectors
(The heated oxygen sensor 1 (front) heater cir-
cuit is open or shorted.)
I
Heated oxygen sensor 1 (front) heater
DTC Confirmation Procedure
NCEC0140
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” 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) HEATER
SR20DE
Description
EC-175
With CONSULT-II
1)
Turn ignition switch “ON” and select “DATA MONITOR” 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 “Diagnostic Procedure”, EC-
SR-178.
With GST
1)
Start engine and run it for at least 5 seconds at idle speed.
2)
Turn ignition switch “OFF” and wait at least 9 seconds.
3)
Start engine and run it for at least 5 seconds at idle speed.
4)
Select “MODE 3” with GST.
5)
If DTC is detected, go to “Diagnostic Procedure”, EC-SR-178.
I
When using GST, “DTC Confirmation Procedure” 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) HEATER
SR20DE
DTC Confirmation Procedure (Cont’d)
EC-176
Wiring Diagram
NCEC0141
YEC085A
DTC P0135 HEATED OXYGEN SENSOR 1 (FRONT) HEATER
SR20DE
Wiring Diagram
EC-177
Diagnostic Procedure
NCEC0142
1
CHECK POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect heated oxygen sensor 1 (front) harness connector.
SEF207X
3. Turn ignition switch “ON”.
4. Check voltage between terminal 3 and ground with CONSULT or tester.
SEF025X
Voltage: Battery voltage
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors M50, F104 (M81, F115 for CVT models)
I
10A fuse
I
Harness for open or short between heated oxygen sensor 1 (front) and fuse
©
Repair harness or connectors.
3
CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”.
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) HEATER
SR20DE
Diagnostic Procedure
EC-178
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