diagram INFINITI M35 2007 Factory Service Manual

EC-1208
[VK45DE]
DTC P1140, P1145 IVT CONTROL POSITION SENSOR
Revision: 2007 April2007 M35/M45
2. CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR POWER SUPPLY CIRCUIT
1. Disconnect intake valve timing control position sensor harness connector.
2. Turn ignition switch ON.
3. Check voltage between intake valve timing control position sen-
sor terminal 3 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E108, M15

Harness connectors F102, M72

Harness for open or short between intake valve timing control position sensor and IPDM E/R

Harness for open or short between intake valve timing control position sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR GROUND CIRCUIT FOR OPEN AND
SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between intake valve timing control position sensor terminal 1 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
1. Intake valve timing control position
sensor (bank 2)2. Intake valve timing control position
sensor (bank 1)
Voltage: Battery voltage
PBIB2686E
SEF509Y
Continuity should exist.

DTC P1140, P1145 IVT CONTROL POSITION SENSOR
EC-1209
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Revision: 2007 April2007 M35/M45
5. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F102, M72

Harness for open or short between intake valve timing control position sensor and ground
>> Repair open circuit or short to power in harness or connectors.
6. CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN
AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between the following;
ECM terminal 72 and intake valve timing control position sensor (bank 1) terminal 2 or
ECM terminal 53 and intake valve timing control position sensor (bank 2) terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and 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.
7. CHECK INTAKE VALVE TIMING CONTROL POSITION SENSOR
Refer to EC-1210, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace intake valve timing control position sensor.
8. CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to EC-1081, "
Component Inspection" .
OK or NG
OK >> GO TO 9.
NG >> Replace crankshaft position sensor (POS).
9. CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-1088, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace camshaft position sensor (PHASE).
10. CHECK CAMSHAFT SPROCKET
Check accumulation of debris to the signal pick-up portion of the camshaft sprocket. Refer to EM-203, "
TIM-
ING CHAIN" .
OK or NG
OK >> GO TO 11.
NG >> Remove debris and clean the signal pick-up cutout of camshaft sprocket.
11 . CHECK INTERMITTENT INCIDENT
Refer to EC-857, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.

DTC P1217 ENGINE OVER TEMPERATURE
EC-1217
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Revision: 2007 April2007 M35/M45
Wiring DiagramNBS005KU
TBWT1540E

EC-1220
[VK45DE]
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2007 April2007 M35/M45
4. CHECK THERMOSTAT
Check the following.

Thermostat. (Refer to CO-55, "THERMOSTAT AND WATER CONTROL VALVE" .)

Water control valve. (Refer to CO-55, "THERMOSTAT AND WATER CONTROL VALVE" .)

Engine coolant temperature sensor. (Refer to EC-931, "Component Inspection" .)
OK or NG
OK >> GO TO 5.
NG >> Replace malfunctioning component.
5. CHECK MAIN 13 CAUSES
If the cause cannot be isolated, go to EC-1223, "
Main 13 Causes of Overheating" .
>>INSPECTION END
6. CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect cooling fan control module (1) harness connector
E42.
–: Vehicle front
–Cooling fan motor-2 (2)
–Cooling fan motor-1 (3)
3. Turn ignition switch ON.
4. Check voltage between cooling fan control module terminal 3
and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 7.
NG >> GO TO 12.
7. CHECK COOLING FAN CONTROL MODULE GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check harness continuity between cooling fan control module terminal 1 and ground.
Refer to wiring diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to power in harness or connectors.
PBIB3346E
Voltage: Battery voltage
PBIA9509J
Continuity should exist.

DTC P1217 ENGINE OVER TEMPERATURE
EC-1221
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Revision: 2007 April2007 M35/M45
8. CHECK IPDM E/R GROUND CIRCUIT
1. Disconnect IPDM E/R harness connector E8, E9.
2. Check harness continuity between IPDM E/R terminal 38, 51 and ground.
Refer to wiring diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to power in harness or connectors.
9. CHECK COOLING FAN CONTROL SIGNAL CIRCUIT
1. Check harness continuity between IPDM E/R terminal 59 and cooling fan control module terminal 2.
Refer to wiring diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 10.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
10. CHECK COOLING FAN CONTROL MODULE OUTPUT SIGNAL CIRCUIT
1. Reconnect all harness connectors disconnected.
2. Disconnect cooling fan control module harness connectors E301, E303.
3. Turn ignition switch ON.
4. Check voltage between cooling fan control module terminals 4,
6 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 11.
NG >> Replace cooling fan control module.
11 . CHECK COOLING FAN MOTORS -1 AND -2
Refer to EC-1224, "
Component Inspection" .
OK or NG
OK >> GO TO 16.
NG >> Replace cooling fan motor.Continuity should exist.
Continuity should exist.
Voltage: Battery voltage
PBID0261J

EC-1222
[VK45DE]
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2007 April2007 M35/M45
12. CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect cooling fan relay.
3. Turn ignition switch ON.
4. Check voltage between cooling fan relay terminals 1, 3 and
ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 14.
NG >> GO TO 13.
13. DETECT MALFUNCTIONING PART
Check the following.

10A fuse

Fuse block (J/B) connector E102

50A fusible link

Harness for open or short between cooling fan relay and fuse

Harness for open or short between cooling fan relay and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
14. CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E9.
3. Check harness continuity between the following;
Cooling fan relay terminal 2 and IPDM E/R terminal 56,
Cooling fan relay terminal 5 and cooling fan control module terminal 3.
Refer to wiring diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 15.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
15. CHECK COOLING FAN RELAY
Refer to EC-1224, "
Component Inspection" .
OK or NG
OK >> GO TO 16.
NG >> Replace cooling fan relay.Voltage: Battery voltage
PBIA9511J
Continuity should exist.

DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
EC-1227
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Revision: 2007 April2007 M35/M45
Wiring DiagramNBS005L2
TBWT1498E

DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
EC-1229
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Revision: 2007 April2007 M35/M45
2. CHECK FPCM POWER SUPPLY CIRCUIT
1. Disconnect fuel pump control module (FPCM) harness connector.
2. Turn ignition switch ON.
3. Check voltage between FPCM terminal 2 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E106, B4

Harness for open or short between FPCM and harness connector B4
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK FPCM GROUND CIRCUIT-I FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between FPCM terminal 3 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to power in harness or connectors.
: Vehicle front 1. FPCM 2. Dropping resistor
Voltage: Battery voltage
PBIB2708E
PBIB0099E
Continuity should exist.

EC-1230
[VK45DE]
DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
Revision: 2007 April2007 M35/M45
5. CHECK FPCM GROUND CIRCUIT-II FOR OPEN AND SHORT
1. Disconnect “fuel level sensor unit and fuel pump” harness con-
nector (1).
–Illustration shows the view with rear seat cushion and inspection
hole cover (RH) removed.
–: Vehicle front
2. Disconnect dropping resistor harness connector.
3. Check harness continuity between the following;
“fuel level sensor unit and fuel pump” terminal 3 and dropping resistor terminal 2,
FPCM terminal 4 and dropping resister terminal 2.
Refer to Wiring Diagram.
4. Check harness continuity between the following;
“fuel level sensor and fuel pump” terminal 3 and ground,
FPCM terminal 4 and ground.
Refer to Wiring Diagram.
5. Also check harness for short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors B434, B65

Harness for open or short between “fuel level sensor unit and fuel pump” and dropping resistor

Harness for open or short between FPCM and dropping resistor

Harness for open or short between “fuel level sensor unit and fuel pump” and ground

Harness for open or short between FPCM and ground
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB2706E
: Vehicle front 1. FPCM 2. Dropping resistor
Continuity should exist.
Continuity should not exist.
PBIB2708E

DTC P1220 FUEL PUMP CONTROL MODULE (FPCM)
EC-1231
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Revision: 2007 April2007 M35/M45
7. CHECK FPCM INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 38 and FPCM terminal 4.
Refer to Wiring Diagram.
3. Check harness continuity between ECM terminal 38 and ground.
Refer to Wiring Diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors B2, M13

Harness connectors M72, F102

Harness for open or short between ECM and FPCM
>> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK FPCM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 39 and FPCM terminal 1.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 11.
NG >> GO TO 10.
10. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors B2, M13

Harness connectors M72, F102

Harness for open or short between ECM and FPCM
>> Repair open circuit or short to ground or short to power in harness or connectors.
11 . CHECK FPCM
Refer to EC-1232, "
Component Inspection" .
OK or NG
OK >> GO TO 12.
NG >> Replace FPCM.Continuity should exist.
Continuity should not exist.
Continuity should exist.