Infiniti QX56 (Z62). Manual — part 135
SYSTEM
BRC-25
< SYSTEM DESCRIPTION >
[WITH VDC]
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VDC Warning Lamp
• Turns ON when either VDC function, TCS function, ABS function or EBD function, hill start assist function or
brake limited slip differential (BLSD) function is malfunctioning.
• Turns ON when ignition switch turns ON and turns OFF when the system is normal, for bulb check purposes.
CONDITION FOR TURN ON THE INDICATOR LAMP
VDC OFF Indicator Lamp
• Turns ON when VDC function and TCS function are switched to non-operational status (OFF) by VDC OFF
switch.
• Turns ON when ignition switch turns ON and turns OFF when the system is normal, for bulb check purposes.
*: Models with 4WD system
Fail-safe
INFOID:0000000006228184
VDC FUNCTION, TCS FUNCTION, hill start assist FUNCTION AND BRAKE LIMITED SLIP DIFFER-
ENTIAL (BLSD) FUNCTION
VDC warning lamp in combination meter turn ON when a malfunction occurs in system [ABS actuator and
electric unit (control unit)]. The control is suspended for VDC function, TCS function, hill start assist function
and brake limited slip differential (BLSD) function. The Vehicle status becomes the same as models without
VDC function, TCS function, hill start assist function and brake limited slip differential (BLSD) function. How-
ever, ABS function and EBD function are operated normally.
When brake fluid is less than the specified level (brake fluid level
switch ON)
ON
ABS function is malfunctioning
OFF
EBD function is malfunctioning
ON
Accumulator is low pressure
ON
Motor system is malfunctioning
ON
Ignition power supply system is malfunctioning
ON
Condition (status)
Brake warning lamp
Condition (status)
VDC warning lamp
Ignition switch OFF
OFF
For approx. 1 seconds after the ignition switch is turned ON
ON
Approx. 1 seconds after ignition switch is turned ON (when the
system is in normal operation)
OFF
VDC function is malfunctioning
ON
TCS function is malfunctioning
ON
ABS function is malfunctioning
ON
EBD function is malfunctioning
ON
hill start assist function is malfunctioning
ON
Brake limited slip differential (BLSD) function is malfunctioning
ON
VDC function is operating
Blinking
TCS function is operating
Blinking
Condition (status)
VDC OFF indicator lamp
Ignition switch OFF
OFF
For approx. 1 seconds after the ignition switch is turned ON
ON
Approx. 1 seconds after ignition switch is turned ON (when the
system is in normal operation)
OFF
When VDC OFF switch is ON (VDC function and TCS function are
OFF)
ON
4WD mode: 4L
*
ON
BRC-26
< SYSTEM DESCRIPTION >
[WITH VDC]
SYSTEM
ABS FUNCTION
ABS warning lamp and VDC warning lamp in combination meter turn ON when a malfunction occurs in system
[ABS actuator and electric unit (control unit)]. The control is suspended for VDC function, TCS function, ABS
function, hill start assist function and brake limited slip differential (BLSD) function. The vehicle status
becomes the same as models without VDC function, TCS function, ABS function, hill start assist function and
brake limited slip differential (BLSD) function. However, EBD function is operated normally.
NOTE:
ABS self-diagnosis sound may be heard the same as in the normal condition, because self-diagnosis is per-
formed when ignition switch turns ON and when vehicle initially starts.
EBD FUNCTION
ABS warning lamp, brake warning lamp and VDC warning lamp in combination meter turn ON when a mal-
function occurs in system [ABS actuator and electric unit (control unit)]. The control is suspended for VDC
function, TCS function, ABS function, EBD function, hill start assist function and brake limited slip differential
(BLSD) function. The vehicle status becomes the same as models without VDC function, TCS function, ABS
function, EBD function, hill start assist function and brake limited slip differential (BLSD) function.
DTC
Malfunction detected condition
Fail-safe condition
C1101
When an open circuit is detected in rear RH wheel sensor circuit.
The following functions are sus-
pended.
• VDC function
• TCS function
• ABS function
• EBD function (only when both 2
rear wheels are malfunctioning)
• hill start assist function
• Brake limited slip differential
(BLSD) function
C1102
When an open circuit is detected in rear LH wheel sensor circuit.
C1103
When an open circuit is detected in front RH wheel sensor circuit.
C1104
When an open circuit is detected in front LH wheel sensor circuit.
C1105
• When power supply voltage of rear RH wheel sensor is low.
• When distance between rear RH wheel sensor and rear RH wheel sensor rotor is
large.
• When installation of rear RH wheel sensor or rear RH wheel sensor rotor is not
normal.
C1106
• When power supply voltage of rear LH wheel sensor is low.
• When distance between rear LH wheel sensor and rear LH wheel sensor rotor is
large.
• When installation of rear LH wheel sensor or rear LH wheel sensor rotor is not nor-
mal.
C1107
• When power supply voltage of front RH wheel sensor is low.
• When distance between front RH wheel sensor and front RH wheel sensor rotor
is large.
• When installation of front RH wheel sensor or front RH wheel sensor rotor is not
normal.
C1108
• When power supply voltage of front LH wheel sensor is low.
• When distance between front LH wheel sensor and front LH wheel sensor rotor is
large.
• When installation of front LH wheel sensor or front LH wheel sensor rotor is not
normal.
C1109
• When ignition voltage is 10 V or less.
• When ignition voltage is 16 V or more.
The following functions are sus-
pended.
• VDC function
• TCS function
• ABS function
• EBD function
• hill start assist function
• Brake limited slip differential
(BLSD) function
C1111
• When a malfunction is detected in motor or motor relay.
• When a low pressure malfunction is detected in accumulator.
• When a malfunction is detected in accumulator pressure sensor.
C1115
When difference in wheel speed between any wheel and others is detected during
the vehicle is driven, because of installation of other tires than specified.
The following functions are sus-
pended.
• VDC function
• TCS function
• ABS function
• hill start assist function
• Brake limited slip differential
(BLSD) function
C1116
• When stop lamp switch signal is not input when brake pedal depress.
• When stop lamp switch signal is not input when stop lamp relay operates.
C1118
*1
When a malfunction is detected in transfer control unit system.
SYSTEM
BRC-27
< SYSTEM DESCRIPTION >
[WITH VDC]
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C1120
When a malfunction is detected in front LH ABS IN valve.
The following functions are sus-
pended.
• VDC function
• TCS function
• ABS function
• EBD function
• hill start assist function
• Brake limited slip differential
(BLSD) function
C1121
When a malfunction is detected in front LH ABS OUT valve.
C1122
When a malfunction is detected in front RH ABS IN valve.
C1123
When a malfunction is detected in front RH ABS OUT valve.
C1124
When a malfunction is detected in rear LH ABS IN valve.
C1125
When a malfunction is detected in rear LH ABS OUT valve.
C1126
When a malfunction is detected in rear RH ABS IN valve.
C1127
When a malfunction is detected in rear RH ABS OUT valve.
C1130
When a malfunction is detected in ECM system.
The following functions are sus-
pended.
• VDC function
• TCS function
• hill start assist function
• Brake limited slip differential
(BLSD) function
C1140
When a malfunction is detected in actuator relay.
The following functions are sus-
pended.
• VDC function
• TCS function
• ABS function
• EBD function
• hill start assist function
• Brake limited slip differential
(BLSD) function
C1142
*2
When a malfunction is detected in master cylinder pressure sensor or control pres-
sure sensor.
The following functions are sus-
pended.
• VDC function
• TCS function
• hill start assist function
• Brake limited slip differential
(BLSD) function
C1143
When a malfunction is detected in steering angle sensor.
C1144
When neutral position adjustment of steering angle sensor is not complete.
C1145
• When a malfunction is detected in yaw rate signal.
• When yaw rate signal is not continuously received for 2 seconds or more.
• When side G signal is not continuously received for 2 seconds or more.
• When decel G signal is not continuously received for 2 seconds or more.
The following functions are sus-
pended.
• VDC function
• TCS function
• ABS function
• hill start assist function
• Brake limited slip differential
(BLSD) function
C1146
When a malfunction is detected in side/decel G signal.
C1155
• When brake fluid level low signal is detected.
• When an open circuit is detected in brake fluid level switch circuit.
C1160
When calibration of yaw rate/side/decal G sensor is not complete.
C1164
When a malfunction is detected in cut valve 1.
The following functions are sus-
pended.
• VDC function
• TCS function
• ABS function
• EBD function
• hill start assist function
• Brake limited slip differential
(BLSD) function
C1165
When a malfunction is detected in cut valve 2.
C1166
When a malfunction is detected in suction valve 1.
C1167
When a malfunction is detected in suction valve 2.
C1170
When the information in ABS actuator and electric unit (control unit) is not the same.
The following functions are sus-
pended.
• VDC function
• TCS function
• ABS function
• hill start assist function
• Brake limited slip differential
(BLSD) function
DTC
Malfunction detected condition
Fail-safe condition
BRC-28
< SYSTEM DESCRIPTION >
[WITH VDC]
SYSTEM
*1: Models with 4WD System
*2: Models with Advanced Driver Assistance System
Protection Function
INFOID:0000000006228185
The VDC warning lamp, ABS warning lamp and brake warning lamp turns ON and DTC “C118E” may be
detected in self-diagnosis result of “ABS” when the brake pedal is excessively operated, such as air bleeding.
This is not a system malfunction because this occurs due to the temporary decrease in accumulator fluid pres-
sure. The system returns to normal condition when the accumulator fluid pressure reaches the specified pres-
sure with the ignition switch ON and the VDC warning lamp, ABS warning lamp, and brake warning lamp turn
OFF. After these steps, erase self-diagnosis results for “ABS” with CONSULT-III.
NOTE:
DTC “C1111” is detected in self-diagnosis results of “ABS” when the accumulator system has a malfunction.
VDC FUNCTION
VDC FUNCTION : System Description
INFOID:0000000006222572
• Side slip or tail slip may occur while driving on a slippery road or intending an urgent evasive driving. VDC
function detects side slip status using each sensor when side slip or tail slip is about to occur and improves
vehicle stability by brake control and engine output control during driving.
• In addition to ABS function, EBD function and TCS function, target side slip amount is calculated according
to steering operation amount from steering angle sensor and brake operation amount from pressure sensor.
By comparing this information with vehicle side slip amount that is calculated from information from yaw rate/
C118E
When performing excessive brake pedal operation with the vehicle stopped. [When
accumulator fluid pressure reaches 11.43 MPa (114 bar, 116.6 kg/cm
2
, 1657 psi) af-
ter reaching 17.3 MPa (173 bar, 176.5 kg/cm
2
, 2509 psi.]
The following functions are sus-
pended.
• VDC function
• TCS function
• ABS function
• EBD function
• hill start assist function
• Brake limited slip differential
(BLSD) function
U1000
When CAN communication signal is not continuously received for 2 seconds or
more.
The following functions are sus-
pended.
• VDC function
• TCS function
• ABS function
• hill start assist function
• Brake limited slip differential
(BLSD) function
DTC
Malfunction detected condition
Fail-safe condition
DTC
• VDC warning lamp
• ABS warning lamp
• Brake warning lamp
Condition
Description protection function
C118E
ON
When temporary decrease in accumulator fluid pres-
sure.
NOTE:
System is not malfunction.
The following functions are suspended
temporarily
• VDC function
• TCS function
• ABS function
• EBD function
• hill start assist function
• Brake limited slip differential (BLSD)
function
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