Infiniti QX56 (Z62). Manual — part 156
C1166, C1167 SV SYSTEM
BRC-109
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
1.
Turn the ignition switch OFF.
2.
Check continuity between ABS actuator and electric unit (control unit) harness connector and the ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK TERMINAL
Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with harness
connector.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-137, "Removal and Installa-
.
NO
>> Repair or replace error-detected parts.
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E36
2
Ground
Existed
3
E37
48
BRC-110
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C1170 VARIANT CODING
C1170 VARIANT CODING
DTC Logic
INFOID:0000000006222634
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC DETECTION
With CONSULT-III.
1.
Turn the ignition switch OFF to ON.
2.
Perform self-diagnosis for “ABS”.
Is DTC “C1170” detected?
YES
>> Proceed to diagnosis procedure. Refer to
BRC-110, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006222635
1.
CHECK SELF-DIAGNOSIS RESULTS
Replace ABS actuator and electric unit (control unit) even if other display than “VARIANT CODING” is dis-
played in self-diagnosis for “ABS”.
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-137, "Removal and Installa-
.
DTC
Display Item
Malfunction detected condition
Possible causes
C1170
VARIANT CODING
When the information in ABS actuator and electric
unit (control unit) is not the same.
ABS actuator and electric unit
(control unit)
C118E ACCUMULATOR
BRC-111
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
C118E ACCUMULATOR
DTC Logic
INFOID:0000000006222636
DTC DETECTION LOGIC
CAUTION:
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 pressure. The system returns to normal condition when the accumulator fluid pres-
sure reaches the specified pressure with the ignition switch ON and the VDC warning lamp, ABS warn-
ing lamp, and brake warning lamp turn OFF. After these steps, ABS self-diagnosis results are erased.
Diagnosis Procedure
INFOID:0000000006222637
1.
ERASE SELF-DIAGNOSIS RESULT
CAUTION:
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 pressure. The system returns to normal condition when the accumulator fluid pres-
sure reaches the specified pressure with the ignition switch ON and the VDC warning lamp, ABS warn-
ing lamp, and brake warning lamp turn OFF. After these steps, ABS self-diagnosis results are erased.
With CONSULT-III.
1.
Erase Self-diagnosis result for “ABS”.
2.
Turn the ignition switch OFF.
3.
Depress brake pedal to full stroke 20 times or more.
4.
Start the engine, and then wait 2 minutes or more.
5.
Check VDC warning lamp, ABS warning lamp and brake warning lamp turns OFF.
6.
Perform self-diagnosis for “ABS”.
Is any DTC detected?
YES
>> Check the DTC. Refer to
.
NO
>> INSPECTION END
DTC
Display Item
Malfunction detected condition
Possible causes
C118E
ACCUMULATOR PRESS
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) after reaching 17.3 MPa (173 bar, 176.5 kg/
cm
2
, 2509 psi.]
—
BRC-112
< DTC/CIRCUIT DIAGNOSIS >
[WITH VDC]
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000006222638
CAN communication allows a high rate of information transmission through the two communication lines
(CAN-H line and CAN-L line) connecting various control units in the system. Each control unit transmits/
receives data but selectively reads required data only.
DTC Logic
INFOID:0000000006222639
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn the ignition switch OFF to ON.
2.
Perform self-diagnosis for “ABS”.
Is DTC “U1000” detected?
YES
>> Proceed to diagnosis procedure. Refer to
BRC-112, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006222640
Go to
LAN-18, "Trouble Diagnosis Flow Chart"
.
DTC
Display Item
Malfunction detected condition
Possible causes
U1000
CAN COMM CIRCUIT
When CAN communication signal is not continuously
received for 2 seconds or more
CAN communication system mal-
function
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