2005 INFINITI FX35 Service Manual

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Page 1569 of 4731

INFINITI FX35 2005 Service Manual EC-176
[VQ35DE]
DTC P0011, P0021 IVT CONTROL
Revision: 2005 July 2005 FX
7. If the 1st trip DTC is detected, go to EC-176, "Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”

Page 1570 of 4731

INFINITI FX35 2005 Service Manual DTC P0011, P0021 IVT CONTROL EC-177
[VQ35DE]
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EC
Revision: 2005 July 2005 FX
6. CHECK TIMING CHAIN INSTALLATION
Check service records for any recent repairs that m

Page 1571 of 4731

INFINITI FX35 2005 Service Manual EC-178
[VQ35DE]
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
Revision: 2005 July 2005 FX
DTC P0037, P0038, P0057, P0058 HO2S2 HEATERPFP:226A0
DescriptionABS006LR
SYSTEM DESCRIPTION
The ECM performs ON/

EC-178
[VQ35DE]
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
Revision: 2005 July 2005 FX
DTC P0037, P0038, P0057, P0058 HO2S2 HEATERPFP:226A0
DescriptionABS006LR
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 2 heater corresponding to the engine speed,
amount of intake air and engine coolant temperature.
OPERATION
CONSULT-II Reference Value in Data Monitor ModeABS006LS
Specification data are reference values.
On Board Diagnosis LogicABS006LT
Sensor Input signal to ECM ECM function Actuator
Camshaft position sensor (PHASE)
Crankshaft position sensor (POS) Engine speed
Heated oxygen sensor 2
heater control Heated oxygen sensor 2 heater
Engine coolant temperature sensor Engine coolant temperature
Mass air flow sensor Amount of intake air
Engine speed rpm Heated oxygen sensor 2 heater
Above 3,600 OFF
Below 3,600 rpm after the following conditions are met.
Engine: After warming up
Keeping the engine speed between 3,500 and 4,000 rpm for 1
minute and at idle for 1 minute under no load ON
MONITOR ITEM CONDITION SPECIFICATION
HO2S2 HTR (B1)
HO2S2 HTR (B2)
Engine speed is below 3,600 rpm after the following conditions are met.
–Engine: After warming up
–Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and
at idle for 1 minute under no load ON
Engine speed: Above 3,600 rpm OFF
DTC No.
Trouble diagnosis
name DTC detecting condition Possible cause
P0037
0037
(Bank 1) Heated oxygen
sensor 2 heater
control circuit low The current amperage in the heated oxygen sen-
sor 2 heater circuit is out of the normal range.
(An excessively low voltage signal is sent to ECM
through the heated oxygen sensor 2 heater.)
Harness or connectors
(The heated oxygen sensor 2 heater circuit is
open or shorted.)
Heater oxygen sensor 2 heater
P0057
0057
(Bank 2)
P0038
0038
(Bank 1) Heated oxygen
sensor 2 heater
control circuit high The current amperage in the heated oxygen sen-
sor 2 heater circuit is out of the normal range.
(An excessively high voltage signal is sent to
ECM through the heated oxygen sensor 2
heater.)
Harness or connectors
(The heated oxygen sensor 2 heater circuit is
shorted.)
Heater oxygen sensor 2 heater
P0058
0058
(Bank 2)

Page 1572 of 4731

INFINITI FX35 2005 Service Manual DTC P0037, P0038, P0057, P0058 HO2S2 HEATER EC-179
[VQ35DE]
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Revision: 2005 July 2005 FX
DTC Confirmation ProcedureABS006LU
NOTE:
If DTC Confirmation Procedure

Page 1573 of 4731

INFINITI FX35 2005 Service Manual EC-180
[VQ35DE]
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
Revision: 2005 July 2005 FX
Wiring DiagramABS006LV
BANK 1
TBWM0285E

Page 1574 of 4731

INFINITI FX35 2005 Service Manual DTC P0037, P0038, P0057, P0058 HO2S2 HEATER EC-181
[VQ35DE]
C
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EC
Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each te

Page 1575 of 4731

INFINITI FX35 2005 Service Manual EC-182
[VQ35DE]
DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
Revision: 2005 July 2005 FX
BANK 2
TBWM0286E

Page 1576 of 4731

INFINITI FX35 2005 Service Manual DTC P0037, P0038, P0057, P0058 HO2S2 HEATER EC-183
[VQ35DE]
C
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M A
EC
Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each te

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