2006 INFINITI M35 Factory Service Manual

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Page 2065 of 5621

INFINITI M35 2006 Factory Service Manual EC-522
[VQ35DE]
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 January2006 M35/M45
17. DETECT MALFUNCTIONING PART
Check the following.
10A fuse
Fuse block (J/B) connector E102
50A fusible link
Harne

Page 2066 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1217 ENGINE OVER TEMPERATURE
EC-523
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Revision: 2006 January2006 M35/M45
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Driv

Page 2067 of 5621

INFINITI M35 2006 Factory Service Manual EC-524
[VQ35DE]
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 January2006 M35/M45
Component InspectionNBS00539
COOLING FAN MOTORS -1 AND -2
Models With Sub Harneess
1. Disconnect cooling fan motor

Page 2068 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
EC-525
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Revision: 2006 January2006 M35/M45
DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)PFP:17001
DescriptionNBS0053A
SYSTEM DES

DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
EC-525
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Revision: 2006 January2006 M35/M45
DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)PFP:17001
DescriptionNBS0053A
SYSTEM DESCRIPTION
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
This system controls the fuel pump operation. The amount of fuel flow delivered from the fuel pump is altered
between two flow rates by the FPCM operation. The FPCM determines the voltage supplied to the fuel pump
(and therefore fuel flow) according to the following conditions.
COMPONENT DESCRIPTION
The FPCM adjusts the voltage supplied to the fuel pump to control
the amount of fuel flow. When the FPCM increases the voltage sup-
plied to the fuel pump, the fuel flow is increased. When the FPCM
decreases the voltage, the fuel flow is decreased.
CONSULT-II Reference Value in Data Monitor ModeNBS0053B
Specification data are reference values.
On Board Diagnosis LogicNBS0053C
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
Fuel pump controlFuel pump control module
(FPCM) Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Battery Battery voltage*
Conditions Amount of fuel flow Supplied voltage
Engine cranking
Engine coolant temperature is below 10C (50F).
Engine is running under heavy load and high speed conditionshighBattery voltage
(11 - 14V)
Except the above low Approximately 8V
SEF387X
MONITOR ITEM CONDITION SPECIFICATION
FPCM
Engine: Cranking HI
Engine: Idle
Engine coolant temperature: More than 10C (50F)LOW
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1220
1220Fuel pump control module
(FPCM)An improper voltage signal from the FPCM, which
is supplied to a point between the fuel pump and
the dropping resistor, is detected by ECM.
Harness or connectors
(FPCM circuit is shorted.)
Dropping resistor
FPCM

Page 2069 of 5621

INFINITI M35 2006 Factory Service Manual EC-526
[VQ35DE]
DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
Revision: 2006 January2006 M35/M45
DTC Confirmation ProcedureNBS0053D
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmati

Page 2070 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
EC-527
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Revision: 2006 January2006 M35/M45
Wiring DiagramNBS0053E
TBWT0991E

Page 2071 of 5621

INFINITI M35 2006 Factory Service Manual EC-528
[VQ35DE]
DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not

Page 2072 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
EC-529
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Revision: 2006 January2006 M35/M45
2. CHECK FPCM POWER SUPPLY CIRCUIT
1. Disconnect fuel pump control module (FPCM)

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