2006 INFINITI M35 Factory Service Manual

engine oil capacity trip computer tire type TPMS reset spark plugs TPMS

Page 2793 of 5621

INFINITI M35 2006 Factory Service Manual EC-1250
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DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 January2006 M35/M45
2. Supply cooling fan motor terminals with battery voltage and
check operation.
Make sure that cooling fan

Page 2794 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
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DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)PFP:17001
DescriptionNBS005KY
SYSTEM DE

DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
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DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)PFP:17001
DescriptionNBS005KY
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 ModeNBS005KZ
Specification data are reference values.
On Board Diagnosis LogicNBS005L0
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 2795 of 5621

INFINITI M35 2006 Factory Service Manual EC-1252
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DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
Revision: 2006 January2006 M35/M45
DTC Confirmation ProcedureNBS005L1
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmat

Page 2796 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
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Wiring DiagramNBS005L2
TBWT1059E

Page 2797 of 5621

INFINITI M35 2006 Factory Service Manual EC-1254
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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 2798 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
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2. CHECK FPCM POWER SUPPLY CIRCUIT
1. Disconnect fuel pump control module (FPCM)

Page 2799 of 5621

INFINITI M35 2006 Factory Service Manual EC-1256
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DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
Revision: 2006 January2006 M35/M45
5. CHECK FPCM GROUND CIRCUIT-II FOR OPEN AND SHORT
1. Disconnect “fuel level sensor unit and fuel

Page 2800 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
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7. CHECK FPCM INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness

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