2006 INFINITI M35 heater

EC-1390
[VK45DE]
DTC P2A00, P2A03 A/F SENSOR 1
Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
2SBA/F sensor 1 heater
(bank 1)[Engine is running]
Warm-up condition
Idle speedApproximately 5V
16 W/L
A/F sensor 1 (bank 1)[Engine is running]
Warm-up condition
Idle speedApproximately 3.1V
35 GR/LApproximately 2.6V
56 LG/BApproximately 2.3V
75 YApproximately 2.3V
PBIB1584E

EC-1392
[VK45DE]
DTC P2A00, P2A03 A/F SENSOR 1
Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic ProcedureNBS005PI
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten two ground screws on the body.
Refer to EC-885, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
24 SBA/F sensor 1 heater
(bank 2)[Engine is running]
Warm-up condition
Idle speedApproximately 5V
57 BR/W
A/F sensor 1 (bank 2)[Engine is running]
Warm-up condition
Idle speedApproximately 2.6V
58 G/OApproximately 2.3V
76 G/WApproximately 3.1V
77 GRApproximately 2.3V
PBIB1584E
1. Body ground M70 2. Body ground M16
PBIB2782E

EC-1396
[VK45DE]
DTC P2A00, P2A03 A/F SENSOR 1
Revision: 2006 January2006 M35/M45
8. CHECK A/F SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between A/F sensor 1 terminal and ECM terminal as follows.
Refer to Wiring Diagram.
4. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
5. Also check harness for short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK A/F SENSOR 1 HEATER
Refer to EC-910, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> GO TO 11.
10. CHECK INTERMITTENT INCIDENT
Perform EC-878, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 11.
NG >> Repair or replace.
A/F sensor 1 terminal ECM terminal
Bank1116
275
535
656
Bank 2176
277
557
658
Continuity should exist.
Bank 1 Bank 2
A/F sensor 1 terminal ECM terminal A/F sensor 1 terminal ECM terminal
116176
275277
535557
656658
Continuity should not exist.

ELECTRICAL LOAD SIGNAL
EC-1439
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 January2006 M35/M45
ELECTRICAL LOAD SIGNALPFP:25350
DescriptionNBS005QB
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, heater fan switch sig-
nal, etc.) is transferred through the CAN communication line from BCM to ECM via IPDM E/R.
CONSULT-II Reference Value in Data Monitor ModeNBS005QC
Specification data are reference values.
Diagnostic ProcedureNBS005QD
1. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Connect CONSULT-II and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following
conditions.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check “LOAD SIGNAL” indication under the following conditions.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
MONITOR ITEM CONDITION SPECIFICATION
LOAD SIGNAL
Ignition switch: ONRear window defogger switch: ON
and/or
Lighting switch: 2ND positionON
Rear window defogger switch and light-
ing switch: OFFOFF
HEATER FAN SW
Engine: After warming up, idle
the engineHeater fan switch: ON ON
Heater fan switch: OFF OFF
Condition Indication
Rear window defogger switch: ON ON
Rear window defogger switch: OFF OFF
PBIB0103E
Condition Indication
Lighting switch: ON at 2nd position ON
Lighting switch: OFF OFF
PBIB0103E

EC-1440
[VK45DE]
ELECTRICAL LOAD SIGNAL
Revision: 2006 January2006 M35/M45
3. CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION
Select “HEATER FAN SW” and check indication under the following
conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
4. CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to GW-73, "
REAR WINDOW DEFOGGER" .
>>INSPECTION END
5. CHECK HEADLAMP SYSTEM
Refer to LT- 4 3 , "
HEADLAMP (FOR USA) - XENON TYPE -" , LT- 8 , "HEADLAMP (FOR USA) - CONVEN-
TIONAL TYPE -" or LT-79, "HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -" .
>>INSPECTION END
6. CHECK HEATER FAN CONTROL SYSTEM
Refer to AT C - 4 0 , "
TROUBLE DIAGNOSIS" .
>>INSPECTION END
Condition Indication
Heater fan control switch: ON ON
Heater fan control switch: OFF OFF
PBIB1995E

SERVICE DATA AND SPECIFICATIONS (SDS)
EC-1461
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EC
Revision: 2006 January2006 M35/M45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Fuel PressureNBS005QT
Idle Speed and Ignition TimingNBS005QU
*: Under the following conditions:
Air conditioner switch: OFF
Electric load: OFF (Lights, heater fan & rear window defogger)
Steering wheel: Kept in straight-ahead position
Calculated Load ValueNBS005QV
Mass Air Flow SensorNBS005QW
*: Engine is warmed up to normal operating temperature and running under no load.
Intake Air Temperature SensorNBS005QX
Engine Coolant Temperature SensorNBS005QY
Fuel Tank Temperature SensorNBS005QZ
Crankshaft Position Sensor (POS)NBS005R0
Refer to EC-1105, "Component Inspection" .
Camshaft Position Sensor (PHASE)NBS005R1
Refer to EC-1112, "Component Inspection" .
A/F Sensor 1 HeaterNBS005R2
Fuel pressure at idling kPa (kg/cm2 , psi)Approximately 350 (3.57, 51)
Target idle speed No load* (in P or N position) 65050 rpm
Air conditioner: ON In P or N position 650 rpm or more
Ignition timing In P or N position 12
5 BTDC
Condition Calculated load value% (Using CONSULT-II or GST)
At idle14 - 33
At 2,500 rpm12 - 25
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle0.9 - 1.2V*
Mass air flow (Using CONSULT-II or GST)2.0 - 6.0 gꞏm/sec at idle*
7.0 - 20.0 gꞏm/sec at 2,500 rpm*
Temperature C (F) Resistance k
25 (77)1.800 - 2.200
Temperature C (F) Resistance k
20 (68)2.1 - 2.9
50 (122)0.68 - 1.00
90 (194)0.236 - 0.260
Temperature C (F) Resistance k
20 (68)2.3 - 2.7
50 (122)0.79 - 0.90
Resistance [at 25C (77F)] 2.3 - 4.3

EC-1462
[VK45DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2006 January2006 M35/M45
Heated Oxygen Sensor 2 HeaterNBS005R3
Throttle Control MotorNBS005R4
Fuel InjectorNBS005R5
Fuel PumpNBS005R6
Resistance [at 25C (77F)] 5.0 - 7.0
Resistance [at 25C (77F)] Approximately 1 - 15
Resistance [at 10 - 60C (50 - 140F)] 13.5 - 17.5
Resistance [at 25C (77F)] 0.2 - 5.0

INTAKE MANIFOLD COLLECTOR
EM-19
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2006 January2006 M35/M45
INTAKE MANIFOLD COLLECTORPFP:14003
ComponentsNBS004N0
Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS004N1
REMOVAL
WAR NING :
To avoid the danger of being scalded, never drain engine coolant when the engine is hot.
Gasket for intake manifold collector (upper) is secured together with mounting bolt for intake man-
ifold collector (lower). Thus, even when only gasket for upper side is replaced, gasket for lower
side must be also replaced.
1. Vacuum hose 2.EVAP canister purge volume control
solenoid valve3. Vacuum hose
4. Bracket 5. Intake manifold collector (upper) 6. Water hose
7. Water hose 8. Gasket 9. Electric throttle control actuator
10. Bracket 11. PCV hose 12. Bracket
13. Gasket 14. Intake manifold collector (lower) 15. Gasket
16. Intake manifold collector cover
A. To vacuum pipe B. To water outlet C. To heater pipe
D. To PCV valve
KBIA3590J