Nissan Sentra Service Manual: Both side headlamps do not switch to high beam
Description
The headlamps (both sides) do not switch to high beam when the lighting switch is in the hi or pass setting.
Diagnosis procedure
1.Combination switch (lighting and turn signal switch) inspection
Check the combination switch (lighting and turn signal switch). Refer to bcs-72, "symptom table" (with intelligent key system) or bcs-125, "symptom table" (without intelligent key system).
Is the inspection results normal? Yes >> go to 2
No >> repair or replace the malfunctioning part.
2.Check headlamp (hi) request signal input
Consult data monitor
- Select hl hi req of ipdm e/r data monitor item.
- While operating the lighting switch, check the monitor status.
Is the inspection results normal? YES >> GO TO 3
NO >> Replace BCM. Refer to BCS-73, "Removal and Installation" (with Intelligent Key system) or BCS- 126, "Removal and Installation" (without Intelligent Key system).
3.Headlamp (hi) circuit inspection
Check the headlamp (hi) circuit. Refer to exl-88, "diagnosis procedure".
Is the inspection results normal? Yes >> replace ipdm e/r. Refer to pcs-30, "removal and installation" (with intelligent key system) or pcs-58, "removal and installation" (without intelligent key system).
No >> repair or replace the malfunctioning part.
Exterior lighting system symptoms
Symptom Table
Caution:
Perform the self-diagnosis with consult before the symptom diagnosis.
Perform the trouble diagnosis
if any dtc is detected.
Normal operating condition
Description ...
Daytime light system inoperative
Description
The daytime light system is inoperative even though the combination switch
(lighting and turn signal switch)
and parking brake switch are in the normal setting, also whenever engine is ...
Other materials:
A-bag branch line circuit
Diagnosis procedure
Warning:
Always observe the following items for preventing accidental
activation.
Before servicing, turn ignition switch off, disconnect battery
negative terminal, and wait 3 minutes
or more. (To discharge backup capacitor.)
Never use unspecified tester or other me ...
Multiport fuel injection system
MULTIPORT FUEL INJECTION SYSTEM : System
Description
SYSTEM DIAGRAM
*1: ECM determines the start signal status by the signals of engine speed and
battery voltage.
*2: M/T models
*3: CVT models
*4: This sensor is not used to control the engine system under normal
conditions.
SYSTEM DES ...
Daytime light system inoperative
Description
The daytime light system is inoperative even though the combination switch
(lighting and turn signal switch)
and parking brake switch are in the normal setting, also whenever engine is
operating.
Diagnosis procedure
1.Check daytime light operation
Perform bcm(headlamp) daytim ...
