Nissan Altima L32. Instruction — part 684
EXL-20
< FUNCTION DIAGNOSIS >
PARKING, LICENSE PLATE AND TAIL LAMPS
PARKING, LICENSE PLATE AND TAIL LAMPS
System Diagram
INFOID:0000000004201473
System Description
INFOID:0000000004201474
• BCM (Body Control Module) controls parking, license plate and tail lamps operation.
• IPDM E/R (Intelligent Power Distribution Module Engine Room) operates parking, license plate and tail
lamps according to CAN communication signals from BCM.
Component Parts Location
INFOID:0000000004201475
AWLIA0013GB
1.
IPDM E/R E17, E18, E201
2.
BCM M16, M17, M18, M19 (view with
instrument panel removed)
3.
Combination switch M28
ALLIA0019ZZ
PARKING, LICENSE PLATE AND TAIL LAMPS
EXL-21
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
Component Description
INFOID:0000000004201476
PARKING, LICENSE PLATE AND TAIL LAMPS OPERATION
When the lighting switch is in 1ST position, BCM detects the LIGHTING SWITCH 1ST POSITION ON. The
BCM sends a parking light ON request through the CAN communication lines to the IPDM E/R. The IPDM E/R
then activates the tail lamp relay which sends power to the parking and instrument illumination circuits.
EXTERIOR LAMP BATTERY SAVER CONTROL
With the lighting switch (combination switch) in the 2nd position and the ignition switch is turned from ON or
ACC to OFF, the battery saver feature is activated.
Under this condition, the headlamps remain illuminated for 5 minutes unless the lighting switch position is
changed. If the lighting switch position is changed, then the headlamps are turned off.
This setting can be changed by CONSULT-III. Refer to
EXL-22
< FUNCTION DIAGNOSIS >
COMBINATION SWITCH READING SYSTEM
COMBINATION SWITCH READING SYSTEM
System Diagram
INFOID:0000000004201477
System Description
INFOID:0000000004201478
OUTLINE
• BCM reads the status of the combination switch (light, turn signal, wiper and washer) and recognizes the
status of each switch.
• BCM is a combination of 5 output terminals (OUTPUT 1 - 5) and 5 input terminals (INPUT 1 - 5). It reads a
maximum of 20 switch status.
COMBINATION SWITCH MATRIX
Combination switch circuit
Combination switch INPUT-OUTPUT system list
JPMIA0083GB
System
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
OUTPUT 5
INPUT 1
—
FR WASHER
FR WIPER LOW
TURN LH
TURN RH
INPUT 2
FR WIPER HI
—
FR WIPER INT
PASSING
HEADLAMP 1
INPUT 3
INT VOLUME 1
—
—
HEADLAMP 2
HI BEAM
JPMIA0066GB
COMBINATION SWITCH READING SYSTEM
EXL-23
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
NOTE:
Headlamp has a dual system switch.
COMBINATION SWITCH READING FUNCTION
Description
• BCM reads the status of the combination switch at 10ms interval normally.
NOTE:
BCM reads the status of the combination switch at 60ms interval when BCM is controlled at low power con-
sumption mode.
• BCM operates as follows and judges the status of the combination switch.
- INPUT 1 - 5 outputs the voltage waveforms of 5 systems simultaneously.
- It operates the transistor on OUTPUT side in the following order: OUTPUT 5
→ 4 →3 →2 →1.
- The voltage waveform of INPUT corresponding to the formed circuit changes according to the operation of
the transistor on OUTPUT side if any (1 or more) switches are ON.
- It reads this change of the voltage as the status signal of the combination switch.
Operation Example
In the following operation example, the combination of the status signals of the combination switch is replaced
as follows: INPUT 1 - 5 to “1 - 5” and OUTPUT 1 - 5 to “A - E”.
Example 1: When a switch (TURN RH switch) is turned ON
INPUT 4
—
INT VOLUME 3
AUTO LIGHT
—
TAIL LAMP
INPUT 5
INT VOLUME 2
—
—
FR FOG
—
System
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
OUTPUT 5
JPMIA0067GB
JPMIA0068GB
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