Infiniti I35 (A33). Manual — part 349
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8
CHECK HEADLAMP INPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Stop engine.
2. Disconnect ECM harness connector.
3. Disconnect headlamp RH relay (Models for USA), daytime light control unit harness connector (Models for Canada).
4. Check harness continuity between ECM terminal 51 and headlamp RH relay terminal 7 under the following conditions.
(Models for USA)
SEC126D
5. Check harness continuity between ECM terminal 51 and daytime light control unit terminal 7 under the following condi-
tions.(Model for Canada)
SEC127D
6. Also check harness for short to ground and short to power.
OK or NG
OK
©
GO TO 10.
NG
©
GO TO 9.
9
DETECT MALFUNCTIONING PART
Check the following.
I
Harness connectors E81, M15
I
Harness connectors M229, F66
I
Diode E79
I
Harness for open and short between ECM and headlamp RH relay or daytime light control unit
©
Repair open circuit or short to ground or short to power in harness or connectors.
10
CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-152.
©
INSPECTION END
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ELECTRICAL LOAD SIGNAL
Diagnostic Procedure (Cont’d)
EC-737
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Wiring Diagram
NHEC0407
MEC376E
DATA LINK CONNECTORS
Wiring Diagram
EC-738
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Fuel Pressure Regulator
NHEC0408
Fuel pressure at idling kPa (kg/cm
2
, psi)
Approximately 350 (3.57, 51)
Idle Speed and Ignition Timing
NHEC0409
Target idle speed
No-load* (in P or N position)
675
±
50 rpm
Air conditioner: ON
In P or N position
825 rpm or more
Ignition timing
In P or N position
15°
±
5° BTDC
*: Under the following conditions:
I
Air conditioner switch: OFF
I
Electric load: OFF (Lights, heater fan & rear window defogger)
I
Steering wheel: Kept in straight-ahead position
Mass Air Flow Sensor
NHEC0411
Supply voltage
Battery voltage (11 - 14)V
Output voltage at idle
1.1 - 1.5V*
Mass air flow (Using CONSULT-II or GST)
2.0 - 6.0
g·m/sec at idle*
7.0 - 20.0
g·m/sec at 2,500 rpm*
*: Engine is warmed up to normal operating temperature and running under no-load.
Engine Coolant Temperature Sensor
NHEC0412
Temperature °C (°F)
Resistance k
Ω
20 (68)
2.1 - 2.9
50 (122)
0.68 - 1.00
90 (194)
0.236 - 0.260
Heated Oxygen Sensor 1 Heater
NHEC0414
Resistance [at 25°C (77°F)]
3.3 - 4.0
Ω
Fuel Pump
NHEC0415
Resistance [at 25°C (77°F)]
0.2 - 5.0
Ω
Injector
NHEC0417
Resistance [at 10 - 60°C (50 - 140°F)]
13.5 - 17.3
Ω
Calculated Load Value
NHEC0420
Calculated load value % (Using CONSULT-II or GST)
At idle
10 - 35
At 2,500 rpm
10 - 35
Intake Air Temperature Sensor
NHEC0421
Temperature °C (°F)
Resistance k
Ω
25 (77)
1.9 - 2.1
Heated Oxygen Sensor 2 Heater
NHEC0422
Resistance [at 25°C (77°F)]
3.3 - 4.0
Ω
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
SERVICE DATA AND SPECIFICATIONS (SDS)
Fuel Pressure Regulator
EC-739
![](/vehicles/zatt/ltherawowha/yose/vor.png)
Fuel Tank Temperature Sensor
NHEC0424
Temperature °C (°F)
Resistance k
Ω
20 (68)
2.3 - 2.7
50 (122)
0.79 - 0.90
Throttle Control Motor
NHEC1332
Resistance [at 25°C (77°F)]
Approximately 1 - 15
Ω
Crankshaft Position Sensor (POS)
NHEC1414
Refer to “Component Inspection”, EC-322.
Camshaft Position Sensor (PHASE)
NHEC0639
Refer to “Component Inspection”, EC-331.
SERVICE DATA AND SPECIFICATIONS (SDS)
Fuel Tank Temperature Sensor
EC-740
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