2006 INFINITI M35 Factory Service Manual

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Page 1929 of 5621

INFINITI M35 2006 Factory Service Manual EC-386
[VQ35DE]
DTC P0340, P0345 CMP SENSOR (PHASE)
Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measur

Page 1930 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0340, P0345 CMP SENSOR (PHASE)
EC-387
[VQ35DE]
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Revision: 2006 January2006 M35/M45
BANK 2
TBWT0963E

Page 1931 of 5621

INFINITI M35 2006 Factory Service Manual EC-388
[VQ35DE]
DTC P0340, P0345 CMP SENSOR (PHASE)
Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measur

Page 1932 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0340, P0345 CMP SENSOR (PHASE)
EC-389
[VQ35DE]
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Revision: 2006 January2006 M35/M45
2. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground

Page 1933 of 5621

INFINITI M35 2006 Factory Service Manual EC-390
[VQ35DE]
DTC P0340, P0345 CMP SENSOR (PHASE)
Revision: 2006 January2006 M35/M45
5. CHECK CMP SENSOR (PHASE) GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness conti

Page 1934 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0340, P0345 CMP SENSOR (PHASE)
EC-391
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Revision: 2006 January2006 M35/M45
10. CHECK INTERMITTENT INCIDENT
Refer to EC-165, "
TROUBLE DIAGNOSIS FOR INTERMITTE

Page 1935 of 5621

INFINITI M35 2006 Factory Service Manual EC-392
[VQ35DE]
DTC P0420, P0430 THREE WAY CATALYST FUNCTION
Revision: 2006 January2006 M35/M45
DTC P0420, P0430 THREE WAY CATALYST FUNCTIONPFP:20905
On Board Diagnosis LogicNBS004ZC
The ECM monitors

EC-392
[VQ35DE]
DTC P0420, P0430 THREE WAY CATALYST FUNCTION
Revision: 2006 January2006 M35/M45
DTC P0420, P0430 THREE WAY CATALYST FUNCTIONPFP:20905
On Board Diagnosis LogicNBS004ZC
The ECM monitors the switching frequency ratio of air fuel ratio (A/F) sensor 1 and heated oxygen sensor 2.
A three way catalyst 1 with high oxygen storage capacity will indicate a low switching frequency of heated oxy-
gen sensor 2. As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will
increase.
When the frequency ratio of A/F sensor 1 and heated oxygen sensor 2 approaches a specified limit value, the
three way catalyst 1 malfunction is diagnosed.
DTC Confirmation ProcedureNBS004ZD
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
TESTING CONDITION:
Do not hold engine speed for more than the specified minutes below.
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2. Start engine and warm it up to the normal operating tempera-
ture.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and
4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Make sure that “COOLAN TEMP/S” indicates more than 70
C
(158
F).
If not, warm up engine and go to next step when “COOLAN
TEMP/S” indication reaches to 70
C (158F).
7. Open engine hood.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0420
0420
(Bank 1)
Catalyst system effi-
ciency below threshold
Three way catalyst (manifold) does not oper-
ate properly.
Three way catalyst (manifold) does not have
enough oxygen storage capacity.
Three way catalyst (manifold)
Exhaust tube
Intake air leaks
Fuel injector
Fuel injector leaks
Spark plug
Improper ignition timing P0430
0430
(Bank 2)
PBIB1923E
SEF189Y

Page 1936 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0420, P0430 THREE WAY CATALYST FUNCTION
EC-393
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Revision: 2006 January2006 M35/M45
8. Select “DTC & SRT CONFIRMATION” then “SRT WORK SUP-
PORT” mod

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