2011 INFINITI QX56 Factory Service Manual

differential wheel bolts battery location jump start terminals radio TPMS

Page 617 of 5598

INFINITI QX56 2011 Factory Service Manual
BRC-100
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1145, C1146 YAW RATE/SIDE/DECEL G SENSOR
C1145, C1146 YAW RATE/SIDE/DECEL G SENSOR
DTC LogicINFOID:0000000006222623
DTC DETECTION LOGIC
DTC CONFIRMATION P

BRC-100
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1145, C1146 YAW RATE/SIDE/DECEL G SENSOR
C1145, C1146 YAW RATE/SIDE/DECEL G SENSOR
DTC LogicINFOID:0000000006222623
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
“C1145” or “C1146” detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-100, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006222624
CAUTION:
A malfunction in yaw rate/side/ decel G sensor system may be det ected when the vehicle sharply
turns during a spin turn, acceleratio n turn or drift driving while VDC function is OFF (VDC OFF indi-
cator lamp is in ON status). This is not a malfun ction if the status returns to normal after engine is
started again. In that case, erase self-diagn osis result memory using CONSULT-III.
When the engine is in running stat us and the vehicle is on a turntable at the entrance of parking lot
or on a moving unit, VDC warning lamp may tu rn ON and “ABS” self-diagnosis may display “YAW
RATE SENSOR”. In this case, yaw rate sensor is not malfunctioning. The status returns to normal
when the vehicle is left from the turntable or movi ng unit and the engine is started again. In that
case, erase self-diagnosis result memory using CONSULT-III.
1.CHECK YAW RATE/SIDE/DECEL G SENSOR MOUNTING CONDITION
Check yaw rate/side/decel G sensor mounting condition. Refer to BRC-138, "
Exploded View".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-detected parts.
2.CHECK YAW RATE/SIDE/DECE L G SENSOR POWER SUPPLY
1. Turn the ignition switch OFF.
2. Disconnect yaw rate/side/decel G sensor harness connector.
3. Check voltage between yaw rate/side/dec el G sensor harness connector and ground.
4. Turn the ignition switch ON. CAUTION:
Never start engine.
5. Check voltage between yaw rate/side/dec el G sensor harness connector and ground.
DTC Display Item Malfunction detected condition Possible causes
C1145 YAW RATE SENSOR 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. Harness or connector
Yaw rate/side/decel G sensor
ABS actuator and electric unit
(control unit)
Ignition power supply system
Fuse
C1146 SIDE G-SEN CIRCUIT When a malfunction is detected in side/decel G sig-
nal.
Yaw rate/side/decel G sensor
—Voltage
Connector Terminal
M55 3 Ground Approx. 0 V
Revision: 2010 May2011 QX56

Page 618 of 5598

INFINITI QX56 2011 Factory Service Manual
C1145, C1146 YAW RATE/SIDE/DECEL G SENSOR
BRC-101
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK YAW RA

Page 619 of 5598

INFINITI QX56 2011 Factory Service Manual
BRC-102
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1145, C1146 YAW RATE/SIDE/DECEL G SENSOR
6.CHECK COMMUNICATION LINE (2)
1. Connect ABS actuator and electric unit (control unit) harness connector.
2. Che

Page 620 of 5598

INFINITI QX56 2011 Factory Service Manual
C1155 BRAKE FLUID LEVEL SWITCHBRC-103
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
C1155 BRAKE FLUID LEVEL SWITCH
DTC LogicINFOID:0000000006222625
DTC DETECTION LOGIC
DTC CO

Page 621 of 5598

INFINITI QX56 2011 Factory Service Manual
BRC-104
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1155 BRAKE FLUID LEVEL SWITCH
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace error-detected parts.
4.CHECK BRAKE FLUID LEVEL SWI

Page 622 of 5598

INFINITI QX56 2011 Factory Service Manual
C1160 DECEL G SEN SETBRC-105
< DTC/CIRCUIT DIAGNOSIS > [WITH VDC]
C
D
E
G H
I
J
K L
M A
B
BRC
N
O P
C1160 DECEL G SEN SET
DTC LogicINFOID:0000000006222628
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDU

Page 623 of 5598

INFINITI QX56 2011 Factory Service Manual
BRC-106
< DTC/CIRCUIT DIAGNOSIS >[WITH VDC]
C1164, C1165 CV SYSTEM
C1164, C1165 CV SYSTEM
DTC LogicINFOID:0000000006222630
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK DTC DETECTION
With CO

Page 624 of 5598

INFINITI QX56 2011 Factory Service Manual
C1164, C1165 CV SYSTEMBRC-107
< 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 electr ic unit (cont

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