Nissan Xterra. Instruction — part 515

MWI

BCM (BODY CONTROL MODULE)

MWI-47

< ECU DIAGNOSIS INFORMATION >

Combination switch
output 5

Output

Lighting, turn, wiper OFF
Wiper dial position 4

Combination switch
output 4

Output

Lighting, turn, wiper OFF
Wiper dial position 4

Combination switch
output 3

Output

Lighting, turn, wiper OFF
Wiper dial position 4

Combination switch
output 2

Output

Lighting, turn, wiper OFF
Wiper dial position 4

Combination switch
output 1

Key switch and key
lock solenoid

Input

OFF

Key inserted

Battery voltage

Key removed

W/R

Ignition switch (ON)

Input

—

Battery voltage

CAN-H

—

CAN-L

—

Rear window defogger
switch

Input

Rear window defogger switch
ON

Rear window defogger switch
OFF

Off-road lamps

Output

Off-road
lamps switch

ON 0V

OFF Battery

voltage

Back door switch

Input

OFF

ON (open)

OFF (closed)

Battery voltage

Terminal

Wire

color

Signal name

Signal

input/

output

Measuring condition

Reference value or waveform

(Approx.)

Ignition

switch

Operation or condition

SKIA5291E

SKIA5292E

SKIA5291E

SKIA5292E

MWI-48

< ECU DIAGNOSIS INFORMATION >

BCM (BODY CONTROL MODULE)

Rear wiper auto stop
switch

Input

Rise up position (rear wiper
arm on stopper)

A Position (full clockwise stop
position)

Battery voltage

Forward sweep (counterclock-
wise direction)

Fluctuating

B Position (full counterclock-
wise stop position)

Reverse sweep (clockwise di-
rection)

Fluctuating

Lock switch

Input

OFF

ON (lock)

OFF

Battery voltage

Unlock switch

Input

OFF

ON (unlock)

OFF

Battery voltage

Front door switch LH

Input

OFF

ON (open)

OFF (closed)

Battery voltage

Rear door switch LH

Input

OFF

ON (open)

OFF (closed)

Battery voltage

Cargo lamp

Output

OFF

Any door open (ON)

All doors closed (OFF)

Battery voltage

Off-road lamps relay

Output

Off-road
lamps switch

ON 0V

OFF

Battery voltage

Trailer turn signal
(right)

Output

Turn right ON

Trailer turn signal (left)

Output

Turn left ON

Rear wiper output cir-
cuit 1

Output

OFF

Battery voltage

R/Y

Battery saver output

Output

OFF

10 minutes after ignition
switch is turned OFF

—

Battery voltage

R/Y

Battery power supply

Input

OFF

—

Battery voltage

Optical sensor

Input

When optical sensor is illumi-
nated

3.1V or more

When optical sensor is not illu-
minated

0.6V or less

Terminal

Wire

color

Signal name

Signal

input/

output

Measuring condition

Reference value or waveform

(Approx.)

Ignition

switch

Operation or condition

SKIA3009J

MWI

BCM (BODY CONTROL MODULE)

MWI-49

< ECU DIAGNOSIS INFORMATION >

Fail Safe

INFOID:0000000010244809

Fail-safe index

BCM performs fail-safe control when any DTC listed below is detected.

DTC Inspection Priority Chart

INFOID:0000000010244810

If some DTCs are displayed at the same time, perform inspections one by one based on the following priority

chart.

Front door lock as-
sembly LH actuator
(unlock)

Output

OFF

OFF (neutral)

ON (unlock)

Battery voltage

Turn signal (left)

Output

Turn left ON

Turn signal (right)

Output

Turn right ON

Interior room/map
lamp

Output

OFF

Any door
switch

ON (open)

OFF (closed)

Battery voltage

All door lock actuators
(lock)

Output

OFF

OFF (neutral)

ON (lock)

Battery voltage

Front door lock actua-
tor RH, rear door lock
actuators LH/RH and
back door lock actua-
tor (unlock)

Output

OFF

OFF (neutral)

ON (unlock)

Battery voltage

Ground

Input

—

Power window power
supply (RAP)

Output

—

Ignition switch ON

Battery voltage

Within 45 seconds after igni-
tion switch OFF

Battery voltage

More than 45 seconds after ig-
nition switch OFF

When front door LH or RH is
open or power window timer
operates

Battery power supply

Input

OFF

—

Battery voltage

Terminal

Wire

color

Signal name

Signal

input/

output

Measuring condition

Reference value or waveform

(Approx.)

Ignition

switch

Operation or condition

SKIA3009J

Display contents of CONSULT

Fail-safe

Cancellation

U1000: CAN COMM CIRCUIT

Inhibit engine cranking

When the BCM re-establishes communication with the other mod-
ules.

MWI-50

< ECU DIAGNOSIS INFORMATION >

BCM (BODY CONTROL MODULE)

DTC Index

INFOID:0000000010244811

NOTE:

Details of time display

• CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning igni-

tion switch OFF

→ ON again.

• 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1

→ 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter

remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch

OFF

→ ON after returning to the normal condition if the malfunction is detected again.

Priority

DTC

• U1000: CAN COMM CIRCUIT

• B2190: NATS ANTENNA AMP
• B2191: DIFFERENCE OF KEY
• B2192: ID DISCORD BCM-ECM
• B2193: CHAIN OF BCM-ECM

• C1729: VHCL SPEED SIG ERR
• C1735: IGNITION SIGNAL

• C1704: LOW PRESSURE FL
• C1705: LOW PRESSURE FR
• C1706: LOW PRESSURE RR
• C1707: LOW PRESSURE RL
• C1708: [NO DATA] FL
• C1709: [NO DATA] FR
• C1710: [NO DATA] RR
• C1711: [NO DATA] RL
• C1712: [CHECKSUM ERR] FL
• C1713: [CHECKSUM ERR] FR
• C1714: [CHECKSUM ERR] RR
• C1715: [CHECKSUM ERR] RL
• C1716: [PRESSDATA ERR] FL
• C1717: [PRESSDATA ERR] FR
• C1718: [PRESSDATA ERR] RR
• C1719: [PRESSDATA ERR] RL
• C1720: [CODE ERR] FL
• C1721: [CODE ERR] FR
• C1722: [CODE ERR] RR
• C1723: [CODE ERR] RL
• C1724: [BATT VOLT LOW] FL
• C1725: [BATT VOLT LOW] FR
• C1726: [BATT VOLT LOW] RR
• C1727: [BATT VOLT LOW] RL