Nissan Altima 2007-2012 Service Manual: Electrical load signal
Description
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred via the CAN communication.
Component Function Check
1.CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
1. Turn ignition switch ON.
2. Connect CONSULT-III and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following conditions.
Is the inspection result normal? YES >> GO TO 2.
NO >> Go to EC-1478, "Diagnosis Procedure".
2.CHECK LIGHTING SWITCH FUNCTION
Check “LOAD SIGNAL” indication under the following conditions.
Is the inspection result normal? YES >> GO TO 3.
NO >> Go to EC-1478, "Diagnosis Procedure".
3.CHECK HEATER FAN CONTROL SWITCH FUNCTION
Select “HEATER FAN SW” and check indication under the following conditions.
Is the inspection result normal? YES >> INSPECTION END
NO >> Go to EC-1478, "Diagnosis Procedure".
Diagnosis Procedure
1.INSPECTION START
Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to EC-1478, "Component Function Check".
Which circuit is related to the incident? Rear window defogger>>GO TO 2.
Headlamp>>GO TO 3.
Heater fan>>GO TO 4.
2.CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to DEF-3, "Work Flow".
>> INSPECTION END
3.CHECK HEADLAMP SYSTEM
Refer to EXL-4, "Work Flow".
>> INSPECTION END
4.CHECK HEATER FAN CONTROL SYSTEM
Refer to HAC-4, "Work Flow" (automatic air conditioner) or HAC-101, "Work Flow" (manual air conditioner).
>> INSPECTION END
Cooling fan
Description
The ECM controls the cooling fan corresponding to the vehicle speed, engine
coolant temperature, refrigerant
pressure, and air conditioner ON signal. The control system has 4-step cont ...
Electronic controlled engine mount
Description
The electronic controlled engine mount control solenoid valve controls the
intake manifold vacuum signal for
electronic controlled engine mount. The electronic controlled engine mount ...
Other materials:
P2014 tumble control valve position
sensor
Description
Tumble control valve position sensor is built into the tumble control
valve actuator (2).
1 : Intake manifold adapter
3 : Tumble control valve
The sensor consists of a permanent magnet and Hall IC. It senses
the valve shaft movement and feeds the voltage signals to the ECM.
DTC ...
Sound signal circuit (coupe)
SATELLITE RADIO TUNER
Description
Left and right channel audio signals are supplied from the satellite radio
tuner to the audio unit through the
sound signal circuits.
Diagnosis Procedure
LEFT CHANNEL
1.CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect satellite radio tuner (fac ...
Audio unit (sedan)
Reference Value
TERMINAL LAYOUT
PHYSICAL VALUES
Wiring Diagram — Sedan
...