Infiniti QX56 (Z62). Manual - part 135

 

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Infiniti QX56 (Z62). Manual - part 135

 

 

SYSTEM

BRC-25

< SYSTEM DESCRIPTION >

[WITH VDC]

C

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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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