wiring diagram INFINITI M35 2007 Factory Manual PDF

POWER SUPPLY AND GROUND CIRCUIT
EC-157
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Revision: 2007 April2007 M35/M45
8. CHECK ECM POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Check voltage between ECM terminals 119, 120 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 15.
NG (Battery voltage does not exist.)>>GO TO 9.
NG (Battery voltage exists for more than a few seconds.)>>GO TO
12.
9. CHECK ECM POWER SUPPLY CIRCUIT-IV
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Check voltage between ECM terminal 111 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 10.
NG >> GO TO 12.
10. CHECK ECM POWER SUPPLY CIRCUIT-V
1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector E7.
3. Check harness continuity between ECM terminals 119, 120 and IPDM E/R terminal 18.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 18.
NG >> GO TO 11.
11 . DETECT MALFUNCTIONING PART
Check the following.

Harness or connectors E108, M15

Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors. Voltage: After turning ignition switch OFF, battery
voltage will exist for a few seconds, then
drop approximately 0V.
PBIB1630E
Voltage: Battery voltage
PBIB1191E
Continuity should exist.

EC-158
[VQ35DE]
POWER SUPPLY AND GROUND CIRCUIT
Revision: 2007 April2007 M35/M45
12. CHECK ECM POWER SUPPLY CIRCUIT-VI
1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector E9.
3. Check harness continuity between ECM terminal 111 and IPDM E/R terminal 46.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 14.
NG >> GO TO 13.
13. DETECT MALFUNCTIONING PART
Check the following.

Harness or connectors E108, M15

Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
14. CHECK 20A FUSE
1. Disconnect 20A fuse from IPDM E/R.
2. Check 20A fuse.
OK or NG
OK >> GO TO 18.
NG >> Replace 20A fuse.
15. CHECK GROUND CONNECTIONS-II
Loosen and retighten two ground screws on the body.
Refer to EC-160, "
Ground Inspection" .
OK or NG
OK >> GO TO 16.
NG >> Repair or replace ground connections.Continuity should exist.
1. Body ground M70 2. Body ground M16
PBIB2782E

POWER SUPPLY AND GROUND CIRCUIT
EC-159
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Revision: 2007 April2007 M35/M45
16. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-II
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 1, 115, 116 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 18.
NG >> GO TO 17.
17. DETECT MALFUNCTIONING PART
Check the following.

Harness or connectors F102, M72

Harness for open or short between ECM and ground
>> Repair open circuit or short to power in harness or connectors.
18. CHECK INTERMITTENT INCIDENT
Refer to EC-153, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace IPDM E/R. Refer to PG-18, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MOD-
ULE ENGINE ROOM)" .
NG >> Repair open circuit or short to ground or short to power in harness or connectors.Continuity should exist.

EC-162
[VQ35DE]
DTC U1000, U1001 CAN COMMUNICATION LINE
Revision: 2007 April2007 M35/M45
Wiring DiagramNBS004TN
TBWT0947E

DTC P0011, P0021 IVT CONTROL
EC-169
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Revision: 2007 April2007 M35/M45
6. CHECK TIMING CHAIN INSTALLATION
Check service records for any recent repairs that may cause timing chain misaligned.
Ye s o r N o
Yes >> Check timing chain installation. Refer to EM-66, "TIMING CHAIN" .
No >> GO TO 7.
7. CHECK LUBRICATION CIRCUIT
Refer to EM-93, "
Inspection of Camshaft Sprocket (INT) Oil Groove" .
OK or NG
OK >> GO TO 8.
NG >> Clean lubrication line.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-153, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
For Wiring Diagram, refer to EC-366
for CKP sensor (POS) and EC-373 for CMP sensor (PHASE).
>>INSPECTION END
Component InspectionNBS004TY
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
1. Disconnect intake valve timing control solenoid valve harness connector.
2. Check resistance between intake valve timing control solenoid
valve terminals as follows.
If NG, replace intake valve timing control solenoid valve.
If OK, go to next step.
3. Remove intake valve timing control solenoid valve.
4. Provide 12V DC between intake valve timing control solenoid
valve terminals and then interrupt it. Make sure that the plunger
moves as shown in the figure.
CAUTION:
Do not apply 12V DC continuously for 5 seconds or more.
Doing so may result in damage to the coil in intake valve
timing control solenoid valve.
If NG, replace intake valve timing control solenoid valve.
NOTE:
Always replace O-ring when intake valve timing control
solenoid valve is removed.
Removal and InstallationNBS004TZ
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EM-85, "CAMSHAFT" . Are there any service records that may cause timing chain misaligned?
Terminals Resistance
1 and 2 7.0 - 7.5Ω [at 20°C (68°F)]
1 or 2 and ground∞Ω
(Continuity should not exist)
PBIB0193E
PBIB2275E

DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
EC-171
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Revision: 2007 April2007 M35/M45
Wiring DiagramNBS004U4
BANK 1
TBWT0968E

DTC P0031, P0032, P0051, P0052 A/F SENSOR 1 HEATER
EC-175
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Revision: 2007 April2007 M35/M45
2. CHECK AIR FUEL RATIO (A/F) SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect air fuel ratio (A/F) sensor 1 harness connector.
2. Turn ignition switch ON.
3. Check voltage between A/F sensor 1 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 E12, F3

IPDM E/R harness connector E7

15A fuse

Harness for open or short between A/F sensor 1 and fuse
>> Repair or replace harness or connectors.
4. CHECK A/F SENSOR 1 HEATER OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between the following;
ECM terminal 2 and A/F sensor 1 (bank 1) terminal 4 or
ECM terminal 24 and A/F sensor 1 (bank 2) terminal 4.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.Voltage: Battery voltage
PBIB2794E
PBIB1683E
Continuity should exist.

DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-179
[VQ35DE]
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Revision: 2007 April2007 M35/M45
Wiring DiagramNBS004UC
BANK 1
TBWT1470E

DTC P0037, P0038, P0057, P0058 HO2S2 HEATER
EC-183
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Revision: 2007 April2007 M35/M45
2. CHECK HO2S2 POWER SUPPLY CIRCUIT
1. Disconnect heated oxygen sensor 2 harness connector.
2. Turn ignition switch ON.
3. Check voltage between HO2S2 terminal 2 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 E12, F3

IPDM E/R connector E7

15A fuse

Harness for open or short between heated oxygen sensor 2 and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK HO2S2 OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal and HO2S2 terminal as follows.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB1576E
Voltage: Battery voltage
PBIA9576J
DTCTe r m i n a l s
Bank
ECM Sensor
P0037, P0038 25 3 1
P0057, P0058 6 3 2
Continuity should exist.

EC-186
[VQ35DE]
DTC P0075, P0081 IVT CONTROL SOLENOID VALVE
Revision: 2007 April2007 M35/M45
Wiring DiagramNBS004UK
BANK 1
TBWT0971E