diagram INFINITI M35 2006 Factory Service Manual

DTC P0850 PNP SWITCH
EC-1225
[VK45DE]
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Revision: 2006 January2006 M35/M45
Wiring DiagramNBS005K7
TBWT1052E

EC-1226
[VK45DE]
DTC P0850 PNP SWITCH
Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureNBS005K8
1. CHECK DTC WITH TCM
Refer to AT- 4 0 , "
OBD-II Diagnostic Trouble Code (DTC)" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace.
2. CHECK STARTING SYSTEM
Turn ignition switch OFF, then turn it to START.
Does starter motor operate?
Ye s o r N o
Yes >> GO TO 3.
No >> Refer to SC-10, "
STARTING SYSTEM" .
3. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
1. Turn ignition switch OFF.
2. Disconnect A/T assembly harness connector.
3. Disconnect “unified meter and A/C amp.” harness connector.
4. Check harness continuity between A/T assembly terminal 9 and “unified meter and A/C amp.” terminal 2.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M72, F102
Harness for open or short between A/T assembly and “unified meter and A/C amp.”
>> Repair open circuit or short to ground or short to power in harness or connectors.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
102 G PNP switch[Ignition switch: ON]
Selector lever: P or NApproximately 0V
[Ignition switch: ON]
Selector lever: Except aboveBATTERY VOLTAGE
(11 - 14V)
Continuity should exist.

DTC P0850 PNP SWITCH
EC-1227
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Revision: 2006 January2006 M35/M45
5. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 102 and “unified meter and A/C amp.” terminal 21.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-III
1. Check harness continuity between A/T assembly terminal 9 and TCM terminal 8.
Refer to AT-108, "
DTC P0615 START SIGNAL CIRCUIT" .
2. 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 INTERMITTENT INCIDENT
Refer to EC-878, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 8.
NG >> Repair or replace.
8. REPLACE “UNIFIED METER AND A/C AMP.”
Refer to DI-28, "
UNIFIED METER AND A/C AMP" .
>>INSPECTION END Continuity should exist.
Continuity should exist.

DTC P1140, P1145 IVT CONTROL POSITION SENSOR
EC-1229
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Revision: 2006 January2006 M35/M45
Wiring DiagramNBS005KD
BANK 1
TBWT1041E

DTC P1140, P1145 IVT CONTROL POSITION SENSOR
EC-1233
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Revision: 2006 January2006 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.

EC-1234
[VK45DE]
DTC P1140, P1145 IVT CONTROL POSITION SENSOR
Revision: 2006 January2006 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-1235, "
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-1105, "
Component Inspection" .
OK or NG
OK >> GO TO 9.
NG >> Replace crankshaft position sensor (POS).
9. CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-1112, "
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-878, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.

EC-1242
[VK45DE]
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 January2006 M35/M45
Wiring DiagramNBS005KU
TBWT1043E

DTC P1217 ENGINE OVER TEMPERATURE
EC-1245
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Revision: 2006 January2006 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-953, "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-1249, "
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-1 harness connector (2)
–Cooling fan motor-2 harness connector (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 15.
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.
PBIB2691E
Voltage: Battery voltage
PBIA9509J
Continuity should exist.

EC-1246
[VK45DE]
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 January2006 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 (Models with sub harness)>>GO TO 10.
OK (Models without sub harness)>>GO TO 13.
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 motor-1 harness connector (2) and cool-
ing fan motor-2 harness connector (3).
–: Vehicle front
–Cooling fan control module (1)
3. Turn ignition switch ON.
4. Check voltage between cooling fan motor-1, -2 terminals 1, 2
and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 12.
NG >> GO TO 11.Continuity should exist.
Continuity should exist.
PBIB2691E
Voltage: Battery voltage
PBIB2908E

DTC P1217 ENGINE OVER TEMPERATURE
EC-1247
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Revision: 2006 January2006 M35/M45
11 . CHECK COOLING FAN MOTOR CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect cooling fan control module harness connectors E301, E303.
3. Check harness continuity between the following;
Cooling fan motor-1 terminal 1, 2 and cooling fan control module terminal 4,
Cooling fan motor-1 terminal 3, 4 and cooling fan control module terminal 5,
Cooling fan motor-2 terminal 1, 2 and cooling fan control module terminal 6,
Cooling fan motor-2 terminal 3, 4 and cooling fan control module terminal 7.
Refer to wiring diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> Replace cooling fan control module.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
12. CHECK COOLING FAN MOTOR CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect cooling fan control module harness connectors E301, E303.
3. Check harness continuity between the following;
Cooling fan motor-1 terminal 1, 2 and cooling fan control module terminal 4,
Cooling fan motor-1 terminal 3, 4 and cooling fan control module terminal 5,
Cooling fan motor-2 terminal 1, 2 and cooling fan control module terminal 6,
Cooling fan motor-2 terminal 3, 4 and cooling fan control module terminal 7.
Refer to wiring diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 14.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
13. 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 14.
NG >> Replace cooling fan control module.
14. CHECK COOLING FAN MOTORS -1 AND -2
Refer to EC-1249, "
Component Inspection" .
OK or NG
OK >> GO TO 19.
NG >> Replace cooling fan motor.Continuity should exist.
Continuity should exist.
Voltage: Battery voltage
PBID0261J