Infiniti QX56 (Z62). Manual — part 141
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
BRC-49
< ECU DIAGNOSIS INFORMATION >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
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.
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.
DTC
Malfunction detected condition
Fail-safe condition
BRC-50
< ECU DIAGNOSIS INFORMATION >
[WITH VDC]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
*1: Models with 4WD System
*2: Models with Advanced Driver Assistance System
Protection Function
INFOID:0000000006222581
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.
DTC Inspection Priority Chart
INFOID:0000000006222582
When multiple DTCs are displayed simultaneously, check one by one depending on the following priority list.
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
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
Priority
Detected item (DTC)
1
• U1000 CAN COMM CIRCUIT
2
• C1170 VARIANT CODING
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
BRC-51
< ECU DIAGNOSIS INFORMATION >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
*: Models with 4WD system
DTC Index
INFOID:0000000006222583
3
• C1118 4WD SYSTEM
*
• C1130 ENGINE SIGNAL 1
• C1144 ST ANG SEN SIGNAL
4
• C1109 BATTERY VOLTAGE [ABNORMAL]
• C1111 PUMP MOTOR
• C1140 ACTUATOR RLY
5
• C1101 RR RH SENSOR-1
• C1102 RR LH SENSOR-1
• C1103 FR RH SENSOR-1
• C1104 FR LH SENSOR-1
• C1105 RR RH SENSOR-2
• C1106 RR LH SENSOR-2
• C1107 FR RH SENSOR-2
• C1108 FR LH SENSOR-2
• C1115 ABS SENSOR [ABNORMAL SIGNAL]
• C1116 STOP LAMP SW
• C1120 FR LH IN ABS SOL
• C1121 FR LH OUT ABS SOL
• C1122 FR RH IN ABS SOL
• C1123 FR RH OUT ABS SOL
• C1124 RRLH IN ABS SOL
• C1125 RR LH OUT ABS SOL
• C1126 RR RH IN ABS SOL
• C1127 RR RH OUT ABS SOL
• C1142 PRESS SEN CIRCUIT
• C1143 ST ANG SEN CIRCUIT
• C1145 YAW RATE SENSOR
• C1146 SIDE G-SEN CIRCUIT
• C1160 DECEL G SEN SET
• C1164 CV 1
• C1165 CV 2
• C1166 SV 1
• C1167 SV 2
6
• C1155 BR FLUID LEVEL LOW
• C118E ACCUMULATOR PRESS
Priority
Detected item (DTC)
DTC
Items (CONSULT screen terms)
Reference
C1101
RR RH SENSOR-1
C1102
RR LH SENSOR-1
C1103
FR RH SENSOR-1
C1104
FR LH SENSOR-1
C1105
RR RH SENSOR-2
C1106
RR LH SENSOR-2
C1107
FR RH SENSOR-2
C1108
FR LH SENSOR-2
C1109
BATTERY VOLTAGE [ABNORMAL]
C1111
PUMP MOTOR
C1115
ABS SENSOR [ABNORMAL SIGNAL]
C1116
STOP LAMP SW
C1118
*
4WD SYSTEM
C1120
FR LH IN ABS SOL
BRC-52
< ECU DIAGNOSIS INFORMATION >
[WITH VDC]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
*: Models with 4WD system
C1121
FR LH OUT ABS SOL
C1122
FR RH IN ABS SOL
C1123
FR RH OUT ABS SOL
C1124
RRLH IN ABS SOL
C1125
RR LH OUT ABS SOL
C1126
RR RH IN ABS SOL
C1127
RR RH OUT ABS SOL
C1130
ENGINE SIGNAL 1
C1140
ACTUATOR RLY
C1142
PRESS SEN CIRCUIT
C1143
ST ANG SEN CIRCUIT
C1144
ST ANG SEN SIGNAL
C1145
YAW RATE SENSOR
C1146
SIDE G-SEN CIRCUIT
C1155
BR FLUID LEVEL LOW
C1160
DECEL G SEN SET
C1164
CV 1
C1165
CV 2
C1166
SV 1
C1167
SV 2
C1170
VARIANT CODING
C118E
ACCUMULATOR PRESS
U1000
CAN COMM CIRCUIT
DTC
Items (CONSULT screen terms)
Reference
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