Nissan X-Trail 32. Manual — part 74
BCS-12
< SYSTEM DESCRIPTION >
SYSTEM
BODY CONTROL SYSTEM : Fail-safe
INFOID:0000000011039000
FAIL-SAFE CONTROL BY DTC
BCM performs fail-safe control when any DTC are detected.
REAR WIPER MOTOR PROTECTION
BCM detects the rear wiper stopping position according to the rear wiper stop position signal.
When the rear wiper stop position signal does not change for more than 5 seconds while driving the rear
wiper, BCM stops power supply to protect the rear wiper motor.
Condition of cancellation
1.
More than 1 minute is passed after the rear wiper stop.
2.
Turn rear wiper switch OFF.
3.
Operate the rear wiper switch or rear washer switch.
FAIL-SAFE CONTROL BY RAIN SENSOR MALFUNCTION
BCM detects the rain sensor serial link error and the rain sensor malfunction.
BCM controls the following fail-safe when rain sensor has a malfunction.
Display contents of CONSULT
Fail-safe
B2190–00: CHAIN OF BCM-IMM ANT
Inhibit engine cranking
B2191–00: ID DISCORD, BCM-IMMANT
Inhibit engine cranking
B2192–00: ID DISCORD BCM-ECM
Inhibit engine cranking
B2193–00: CHAIN OF BCM-ECM
Inhibit engine cranking
B2195–00: ANTI-SCANNING
Inhibit engine cranking
B2196–00: DONGLE NG
Inhibit engine cranking
B2198–00: NATS ANTENNA AMP
Inhibit engine cranking
B2557–00: VEHICLE SPEED
Inhibit steering lock
B2602–00: SHIFT POSITION
Inhibit steering lock
B2604–00: PNP/CLUTCH SW
Inhibit steering lock
B2608–00: STARTER RELAY
Inhibit engine cranking
B260F–00: ENG STATE SIG LOST
Inhibit engine cranking
B26F1–00: IGN RELAY OFF
Inhibit engine cranking
B26F2–00: IGN RELAY ON
Inhibit engine cranking
B27D4–00: BCM - S/L SENSOR CIRCUIT
Inhibit steering unlock
B27D5–00: S/L SENSOR TEST OUTPUT
Inhibit steering unlock
B27D6–00: S/L CAN COMM CIRCUIT
Inhibit steering lock
B27D7–00: S/L PWR RELAY
Inhibit steering lock
B27D8–00: S/L VEHICLE SPEED MALFUNCTION
Inhibit steering lock
B27D9–00: S/L IGN MALFUNCTION
Inhibit steering lock/unlock
B27DA–00: IPDM CAN COMM CIRCUIT
Inhibit steering lock
B27DC–00: S/L POWER SUPPLY
Inhibit steering lock
B27DD–00: BCM - S/L ID DISCORD
Inhibit steering lock
B27DE–00: S/L MECHANICAL MALFUNCTION
Inhibit steering lock
B27DF–00: S/L HIGH LEVEL MALFUNCTION
Inhibit steering lock/unlock
B27E0–00: S/L LOW LEVEL MALFUNCTION
Inhibit steering lock
B27E1–00: S/L SAFETY CIRCUIT
Inhibit steering lock
B27E5–00: S/L IGN OFF POSITION
Inhibit steering lock
B27E6–00: S/L ANTI-SCAN MODE
Inhibit steering lock
B27E8–00: S/L UNDETERMINED LOCK POS
Inhibit steering lock
U0415: VEHICLE SPEED
Inhibit steering lock
BCS
SYSTEM
BCS-13
< SYSTEM DESCRIPTION >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
• Front wiper switch AUTO and sensing rain drop: The condition just before the activation of fail-safe is main-
tained until the front wiper switch is turned OFF.
• Front wiper switch AUTO and not sensing rain drop: Front wiper is LO operation until the front wiper switch is
turned off.
FAIL-SAFE CONTROL OF COMBINATION SWITCH READING FUNCTION CAUSED BY LOW
POWER SUPPLY VOLTAGE
If voltage of battery power supply lower, BCM maintains combination switch reading to the status when input
voltage is less than approximately 9 V.
NOTE:
When voltage of battery power supply is approximately 9 V or more, combination switch reading function
returns to normal operation.
COMBINATION SWITCH READING SYSTEM
COMBINATION SWITCH READING SYSTEM : System Description
INFOID:0000000010688578
SYSTEM DIAGRAM
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). It reads a
maximum of 20 switch status.
COMBINATION SWITCH MATRIX
JMMIA1753GB
BCS-14
< SYSTEM DESCRIPTION >
SYSTEM
Combination switch circuit
Combination switch INPUT-OUTPUT system list
COMBINATION SWITCH READING FUNCTION
Description
• BCM reads the status of the combination switch at 10 ms interval
normally.
NOTE:
BCM reads the status of the combination switch at 60 ms interval
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 5
→
4
→
3
→
2
→
1, 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.
System
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
OUTPUT 5
INPUT 1
—
HI BEAM
PASSING
RR FOG
FR FOG
INPUT 2
WIP VOLUME 1
—
HEADLAMP
AUTO LIGHT
TAIL LAMP
INPUT 3
FR WASHER
RR WASHER
—
TURN LH
TURN RH
INPUT 4
FR WIPER LO
FR WIPER HI
FR WIPER INT/AUTO
—
LIGHT OFF
INPUT 5
WIP VOLUME 2
WIP VOLUME 3
RR WIPER INT
RR WIPER ON
—
JMMIA1754GB
JMMIA1637GB
BCS
SYSTEM
BCS-15
< SYSTEM DESCRIPTION >
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
- 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
• The circuit between OUTPUT 5 and INPUT 3 is formed when the TURN RH switch is turned ON.
• BCM detects the combination switch status signal “3E” when the signal of OUTPUT 5 is input to INPUT 3.
• BCM judges that the TURN RH switch is ON when the signal “3E” is detected.
Example 2: When some switches (TURN RH switch, FR WASHER switch) are turned ON
JMMIA1757GB
JMMIA1755GB
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