Nissan Frontier. Manual - part 774

 

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Nissan Frontier. Manual - part 774

 

 

TRAILER TOW

EXL-21

< SYSTEM DESCRIPTION >

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Component Parts Location

INFOID:0000000009478451

Component Description

INFOID:0000000009478452

1.

Stop lamp switch E38 (with M/T) or 
E39 (with A/T) (view with lower instru-
ment panel LH removed)

2.

Brake pedal

3.

BCM, M18, M19, M20 (view with lower 
instrument panel LH removed)

4.

Trailer turn relay LH E164

5.

IPDM E/R E121, E122, E124

6.

Trailer turn relay RH E165

7.

Trailer tow relay 2 E228

8.

Trailer tow relay 1 E227

9.

Combination switch (lighting and turn 
signal switch) M28

AWLIA2086ZZ

Part name

Description

BCM

• Receives lighting and turn signal requests from combination 

switch (lighting and turn signal switch).

• Sends lighting signal request to the IPDM E/R to control the tail 

lamp relay via CAN communication.

• Sends turn/hazard/brake control signal to the trailer turn relays.

IPDM E/R

Activates the tail lamp relay upon request from the BCM via CAN 
communication.

Combination switch (lighting and turn signal switch)

Outputs lighting and turn signal requests to the BCM.

EXL-22

< SYSTEM DESCRIPTION >

COMBINATION SWITCH READING SYSTEM

COMBINATION SWITCH READING SYSTEM

System Diagram

INFOID:0000000010227883

System Description

INFOID:0000000010227884

OUTLINE

• BCM reads the status of the combination switch (light, turn signal, wiper and washer) and recognizes the

status of each switch.

• BCM has a combination of 5 output terminals (OUTPUT 1 - 5) and 5 input terminals (INPUT 1 - 5) and reads

a maximum of 20 switch states.

COMBINATION SWITCH MATRIX

Combination switch circuit

Combination switch INPUT-OUTPUT system list

AWMIA1243GB

System

INPUT 1

INPUT 2

INPUT 3

INPUT 4

INPUT 5

OUTPUT 1

FR WASHER

FR WIPER LOW

TURN LH

TURN RH

OUTPUT 2

FR WIPER HI

FR WIPER INT

PASSING

HEADLAMP 1

OUTPUT 3

INT VOLUME 1

HEADLAMP 2

HI BEAM

AWMIA1244GB

COMBINATION SWITCH READING SYSTEM

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< SYSTEM DESCRIPTION >

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COMBINATION SWITCH READING FUNCTION

Description

• BCM reads the status of the combination switch at 10 ms intervals normally.

NOTE:

BCM reads the status of the combination switch at 60 ms intervals when BCM is controlled at low power

consumption control mode.

• BCM operates as follows and judges the status of the combination switch.

- It operates the transistor on OUTPUT side in the following order: OUTPUT 1 

→ 2 → 3 → 4 → 5, and outputs

voltage waveform.

- The voltage waveform of OUTPUT corresponding to the formed circuit is input into the interface on INPUT

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 (TAIL LAMP) is turned ON

OUTPUT 4

INT VOLUME 3

AUTO LIGHT

TAIL LAMP

OUTPUT 5

INT VOLUME 2

FR FOG

System

INPUT 1

INPUT 2

INPUT 3

INPUT 4

INPUT 5

JPMIA0609GB

JMMIA0326GB

EXL-24

< SYSTEM DESCRIPTION >

COMBINATION SWITCH READING SYSTEM

• The circuit between OUTPUT 4 and INPUT 5 is formed when the TAIL LAMP switch is turned ON.

• BCM detects the combination switch status signal “5D” when the signal of OUTPUT 4 is input to INPUT 5.

• BCM judges that the TAIL LAMP switch is ON when the signal “5D” is detected.

Example 2: When some switches (TURN RH, TAIL LAMP) are turned ON

• The circuits between OUTPUT 1 and INPUT 5 and between OUTPUT 4 and INPUT 5 are formed when the

TURN RH switch and TAIL LAMP switch are turned ON.

• BCM detects the combination switch status signal “5AD” when the signals of OUTPUT 1 and OUTPUT 4 are

input to INPUT 5.

• BCM judges that the TURN RH switch and TAIL LAMP switch are ON when the signal “5AD” is detected.

WIPER INTERMITTENT DIAL POSITION SETTING (FRONT WIPER INTERMITTENT OPERATION)

BCM judges the wiper intermittent dial 1 - 7 by the status of INT VOLUME 1, 2, and 3 switches.

AWMIA1245GB

AWMIA1246GB

 

 

 

 

 

 

 

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