Infiniti QX56 (Z62). Manual — part 1079
SBC-16
< ECU DIAGNOSIS INFORMATION >
PRE-CRASH SEAT BELT CONTROL UNIT (DRIVER SIDE)
DTC Index
INFOID:0000000006237885
DTC
Trouble diagnosis name
(CONSULT-III display)
DTC detection condition
Reference
U0126
STRG ANG SEN SIG
Steering angle sensor malfunction is received
U0428
STRG ANGL CAL
Steering angle sensor calibration incomplete signal is received
U1000
CAN COMM CIRCUIT
Pre-crash seat belt control unit cannot transmit and receive CAN
communication signal for 2 seconds or more
B2451
SEAT BLT MTR DR CIRC
• Motor or control unit malfunction
• Seat belt motor circuit is open or shorted
B2452
SEAT BLT MTR AS CIRC
• Motor or control unit malfunction
• Seat belt motor circuit is open or shorted
B2453
BR_STROKE_SEN_CIRC
• Brake pedal stroke sensor malfunction
• Brake pedal stroke sensor circuit is open or shorted
B2454
SEAT BLT PWR DR CIRC
Motor power supply circuit is open or shorted
B2455
CONTROL UNIT DR
Malfunction in pre-crash seat belt control unit
B2456
SEAT BLT PWR AS CIRC
Motor power supply circuit is open or shorted
B2457
CONTROL UNIT AS
Malfunction in pre-crash seat belt control unit
B2458
LOCAL COMM
Local communication line open or shorted
B2461
VHCL SPEED SIGNAL
Vehicle speed signal malfunction is received
B2463
ROLLOVER SIGNAL
Rollover signal malfunction is received
B2466
DR/AS CONTROL UNIT
Control unit is out of the vehicle specification
B2470
SYS HEAT PROTC DR
Deactivation for cooling to prevent system heating due to continuous
operation
B2471
SYS HEAT PROTC AS
Deactivation for cooling to prevent system heating due to continuous
operation
PRE-CRASH SEAT BELT CONTROL UNIT (PASSENGER SIDE)
SBC-17
< ECU DIAGNOSIS INFORMATION >
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PRE-CRASH SEAT BELT CONTROL UNIT (PASSENGER SIDE)
Reference Value
INFOID:0000000006237886
TERMINAL LAYOUT
PHYSICAL VALUES
Fail Safe
INFOID:0000000006237887
• When a system malfunction is detected, deactivates a part of the system or all functions depending on the
malfunctioning part.
• When the malfunction condition recovers to the normal condition, the system returns to the normal opera-
tion.
JMHIA0711ZZ
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
+
–
Signal name
Input/
Output
1
(Y)
Ground
Power supply
Input
—
Battery voltage
6
(LG/B)
Ground
Seat belt buckle switch signal
Input
Seat belt is fastened
0 V
Seat belt is unfastened
5 V
8
(G)
Ground
Local Communication Line 2
Input/
Output
IGN ON
5 V
9
(–)
Ground
Shield
—
—
—
16
(W)
Ground
Local Communication Line 1
Input/
Output
—
—
18
(B)
Ground
Ground
—
—
0 V
19
(W)
Ground
Motor passenger circuit power supply
Input
—
Battery voltage
20
(B)
Ground
Motor passenger circuit ground
—
—
0 V
Display contents of CONSULT-III
Fail-safe
U0126
STRG ANG SEN SIG
Stops the operation in the conditions as per the following.
• When lateral slippage during cornering occurs
• When steering wheel is rotated for emergency
U0428
STRG ANGL CAL
Stops the operation in the conditions as per the following.
• When lateral slippage during cornering occurs
• When steering wheel is rotated for emergency
SBC-18
< ECU DIAGNOSIS INFORMATION >
PRE-CRASH SEAT BELT CONTROL UNIT (PASSENGER SIDE)
*
1
: The deactivation mode differs depending on the internal malfunctioning condition of control unit
U1000
CAN communication circuit
Stops the operation in the conditions as per the following. *
1
• During emergency brake operation
• When ABS continuously operates
• When lateral slippage during cornering occurs
• When Intelligent brake assistance operates
• When steering wheel is rotated for emergency
• When the vehicle inclined excessively
• A part or the whole comfort function
B2452
SEAT BLT MTR AS CIRC
Fully deactivates the whole operation.
B2453
BR_STROKE_SEN_CIRC
Stops the operation in the conditions as per the following.
• During emergency brake operation
• When ABS continuously operates
B2455
CONTROL UNIT DR
Stops the operation in the conditions as per the following. *
1
• During emergency brake operation
• When ABS continuously operates
• When lateral slippage during cornering occurs
• When Intelligent brake assistance operates
• When steering wheel is rotated for emergency
• When the vehicle inclined excessively
• A part or the whole comfort function
B2456
SEAT BLT PWR AS
Fully deactivates the whole operation.
B2457
CONTROL UNIT AS
Fully deactivates the whole operation.*
1
B2458
LOCAL COMM
Fully deactivates the whole operation.*
1
B2461
VHCL SPEED SIGNAL
Stops the operation in the conditions as per the following.
• During emergency brake operation
• When ABS continuously operates
• When lateral slippage during cornering occurs
• When steering wheel is rotated for emergency
• When the vehicle inclined excessively
• A part or the whole comfort function
B2463
ROLLOVER SIGNAL
When the vehicle inclined excessively
B2466
DR/AS CONTROL UNIT
Stops the operation in the conditions as per the following.
• During emergency brake operation
• When ABS continuously operates
• When lateral slippage during cornering occurs
• When steering wheel is rotated for emergency
• When the vehicle inclined excessively
• A part or the whole comfort function
B2471
SYS HEAT PROTC AS
• Fully deactivates the whole operation.
• Operation return
- 1 time operation becomes possible after approximately 30 seconds
- Returns to the initial condition after approximately 8 minutes
Display contents of CONSULT-III
Fail-safe
PRE-CRASH SEAT BELT SYSTEM
SBC-19
< WIRING DIAGRAM >
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WIRING DIAGRAM
PRE-CRASH SEAT BELT SYSTEM
Wiring Diagram
INFOID:0000000006237888
JCHWM0714GB
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