Nissan Primera P11. Manual — part 149
7)
Make sure that “OK” is displayed after touching “SELF-DIAG
RESULTS”.
If
“NG”
is
displayed,
refer
to
“Diagnostic
Procedure”, EC-QG-155.
Overall Function Check
NLEC0124
Use this procedure to check the overall function of the heated oxy-
gen sensor 1 (front) circuit. During this check, a 1st trip DTC might
not be confirmed.
Without CONSULT-II
1)
Start engine and warm it up to normal operating temperature.
2)
Set ECM in Diagnostic Test Mode II [HEATED OXYGEN SEN-
SOR 1 MONITOR (FRONT)].
3)
Check the following with engine speed held at 2,000 rpm con-
stant under no load.
I
Malfunction indicator goes on more than five times within 10
seconds in Diagnostic Test Mode II [HEATED OXYGEN SEN-
SOR 1 MONITOR (FRONT).]
4)
If NG, go to “Diagnostic Procedure”, EC-QG-155.
SAT652J
DTC P0133 HEATED OXYGEN SENSOR 1 (FRONT)
(RESPONSE MONITORING)
QG16
I
18DE
Overall Function Check
EC-153
Wiring Diagram
NCEC0125
YEC065A
DTC P0133 HEATED OXYGEN SENSOR 1 (FRONT)
(RESPONSE MONITORING)
QG16
I
18DE
Wiring Diagram
EC-154
Diagnostic Procedure
NLEC0126
1
RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
SEF994W
©
GO TO 2.
2
RETIGHTEN HEATED OXYGEN SENSOR 1 (FRONT)
Loosen and retighten heated oxygen sensor 1 (front).
Tightening torque:
40 - 60 N
⋅
m (4.1 - 6.1 kg-m, 30 - 44 ft-lb)
©
GO TO 3.
3
CHECK EXHAUST AIR LEAK
1. Start engine and run it at idle.
2. Listen for an exhaust air leak before three way catalyst.
SEF099P
OK or NG
OK
©
GO TO 4.
NG
©
Repair or replace.
4
CHECK FOR INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK
©
GO TO 5.
NG
©
Repair or replace.
DTC P0133 HEATED OXYGEN SENSOR 1 (FRONT)
(RESPONSE MONITORING)
QG16
I
18DE
Diagnostic Procedure
EC-155
5
CLEAR THE SELF-LEARNING DATA
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II.
3. Clear the self-learning control coefficient by touching “START”.
SEF652Y
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0172 detected? Is it difficult to start engine?
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch “OFF”.
3. Disconnect mass air flow sensor harness connector, and restart and run engine for at least 3 seconds at idle speed.
JEF105Y
4. Stop engine and reconnect mass air flow sensor harness connector.
5. Make sure diagnostic trouble code No. 0100 is displayed in Diagnostic Test Mode II.
6. Erase the diagnostic test mode II (Self-diagnostic results) memory. Refer to “How to Erase Emission-related Diagnostic
Information”, EC-QG-44.
7. Make sure diagnostic trouble code No. 0000 is displayed in Diagnostic Test Mode II.
8. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC 0171 or 0172 detected? Is it difficult to start engine?
Yes or No
Yes
©
Perform trouble diagnosis for DTC P0171, P0172. Refer to EC-QG-208, 215.
No
©
GO TO 6.
6
CHECK INPUT SIGNAL CIRCUIT
1. Disconnect heated oxygen sensor 1 (front) harness connector and ECM harness connector.
2. Check harness continuity between ECM terminal 62 and heated oxygen sensor 1 (front) harness connector terminal 2.
Refer to wiring diagram.
Continuity should exist.
3. Check harness continuity between ECM terminal 62 (or terminal 2) and ground.
Continuity should not exist.
4. Also check harness for short to power.
OK or NG
OK
©
GO TO 7.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
DTC P0133 HEATED OXYGEN SENSOR 1 (FRONT)
(RESPONSE MONITORING)
QG16
I
18DE
Diagnostic Procedure (Cont’d)
EC-156
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