Infiniti QX56 (JA60). Manual — part 289
P1831 VDC OPERATION SIGNAL (ABS)
DLN-79
< COMPONENT DIAGNOSIS >
[ATX14B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
P1831 VDC OPERATION SIGNAL (ABS)
Description
INFOID:0000000005148847
Malfunction is detected in the VDC operation signal that is output from ABS actuator and electric unit (control
unit) through CAN communication.
DTC Logic
INFOID:0000000005148848
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1831 displayed?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005148849
1.
CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT
Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to
.
Is any malfunction detected by self-diagnosis?
YES
>> Check the malfunctioning system.
NO
>> GO TO 2.
2.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> GO TO 3.
NO
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
3.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
Are the inspection results normal?
YES
>> Inspection End.
NO
>> Perform self-diagnosis with ABS actuator electric unit (control unit) again.
DTC
CONSULT-III
Diagnostic item is detected when...
Reference
[P1831]
VDC OP SIG
Malfunction is detected in VDC opera-
tion signal that is output from ABS actu-
ator and electric unit (control unit)
through CAN communication.
DLN-80
< COMPONENT DIAGNOSIS >
[ATX14B]
P1832 TCS OPERATION SIGNAL (ABS)
P1832 TCS OPERATION SIGNAL (ABS)
Description
INFOID:0000000005148850
Malfunction is detected in TCS operation signal that is output from ABS actuator and electric unit (control unit)
through CAN communication.
DTC Logic
INFOID:0000000005148851
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1832 displayed?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005148852
1.
CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT
Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to
.
Is any malfunction detected by self-diagnosis?
YES
>> Check the malfunctioning system.
NO
>> GO TO 2.
2.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> GO TO 3.
NO
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
3.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
Are the inspection results normal?
YES
>> Inspection End.
NO
>> Perform self-diagnosis with ABS actuator electric unit (control unit) again.
DTC
CONSULT-III
Diagnostic item is detected when...
Reference
[P1832]
TCS OP SIG
Malfunction is detected in TCS operation
signal that is output from ABS actuator
and electric unit (control unit) through
CAN communication.
Refer to
.
TRANSFER CONTROL UNIT
DLN-81
< ECU DIAGNOSIS >
[ATX14B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
ECU DIAGNOSIS
TRANSFER CONTROL UNIT
Reference Value
INFOID:0000000005148853
VALUE ON THE DIAGNOSIS TOOL
CONSULT-III data monitor item
Monitored item [Unit]
Content
Condition
Display value
VHCL/S SEN·FR [km/h]
or [mph]
Wheel speed (Front
wheel)
Vehicle stopped
0 km/h (0 mph)
Vehicle running
CAUTION:
Check air pressure of tire under standard condition.
Approximately
equal to the indica-
tion on speedome-
ter (Inside of
±10%)
VHCL/S SEN·RR [km/h]
or [mph]
Wheel speed (Rear
wheel)
Vehicle stopped
0 km/h (0 mph)
Vehicle running
CAUTION:
Check air pressure of tire under standard condition.
Approximately
equal to the indica-
tion on speedome-
ter (Inside of
±10%)
ENGINE SPEED [rpm]
Engine speed
Engine stopped
(Engine speed: Less than 400 rpm)
0 rpm
Engine running
(Engine speed: 400 rpm or more)
Approximately
equal to the indica-
tion on tachometer
THRTL POS SEN [V]
Accelerator pedal posi-
tion (APP) sensor signal
voltage
Accelerator pedal: Released
Approx. 0.5V
Accelerator pedal: Fully depressed
Approx. 4.0V
FLUID TEMP SE [V]
Transfer fluid tempera-
ture signal voltage
Transfer fluid temperature approx. 20 - 80
°C (68 - 176°F) Approx. 1.1 - 0.3V
BATTERY VOLT [V]
Power supply voltage for
transfer control unit
Ignition switch: ON
Battery voltage
2WD SWITCH [ON/OFF]
Input condition from 4WD
shift switch
4WD shift switch: 2WD
ON
4WD shift switch: AUTO, 4H or 4LO
OFF
AUTO SWITCH [ON/
OFF]
Input condition from 4WD
shift switch
4WD shift switch: AUTO
ON
4WD shift switch: 2WD, 4H or 4LO
OFF
LOCK SWITCH [ON/
OFF]
Input condition from 4WD
shift switch
4WD shift switch: 4H
ON
4WD shift switch: 2WD, AUTO or 4LO
OFF
4L SWITCH [ON/OFF]
Input condition from 4WD
shift switch
4WD shift switch: 4LO
ON
4WD shift switch: 2WD, AUTO or 4H
OFF
N POSI SW TF [ON/
OFF]
Condition of neutral-4LO
switch
• Vehicle stopped
• Engine running
• A/T selector lever N posi-
tion
• Brake pedal depressed
4WD shift switch: 2WD,
AUTO or 4H
OFF
4WD shift switch: 4H to
4LO (While actuator mo-
tor is operating.)
OFF
→ON
4WD shift switch: 4LO to
4H (While actuator motor
is operating.)
ON
→OFF
4WD shift switch: 4LO
ON
DLN-82
< ECU DIAGNOSIS >
[ATX14B]
TRANSFER CONTROL UNIT
ATP SWITCH [ON/OFF]
Condition of ATP switch
• Vehicle stopped
• Engine running
• A/T selector lever N posi-
tion
• Brake pedal depressed
4WD shift switch
: 4H to 4LO or 4LO to 4H
(While actuator motor is
operating.)
ON
Except the above
OFF
WAIT DETCT SW [ON/
OFF]
Condition of wait detec-
tion switch
• Vehicle stopped
• Engine running
• A/T selector lever N posi-
tion
• Brake pedal depressed
4WD shift switch: 2WD,
AUTO or 4H
OFF
4WD shift switch: 4H to
4LO (While actuator mo-
tor is operating.)
OFF
→ON
4WD shift switch: 4LO to
4H (While actuator motor
is operating.)
ON
→OFF
4WD shift switch: 4LO
ON
LINE PRES SW [ON/
OFF]
Condition of line pres-
sure switch
• A/T selector lever D position
• 4WD shift switch: AUTO
ON
• Except the above
• The vehicle has been left at
room temperature for 5
minutes and more with ig-
nition switch in OFF posi-
tion.
• Ignition switch: ON
• A/T selector lever: P or
N position
• 4WD shift switch: other
than AUTO
OFF
CL PRES SW [ON / OFF]
Condition of clutch pres-
sure switch
• Vehicle stopped
• Engine running
• A/T selector lever D position
• 4WD shift switch: AUTO or 4H (Wait function is not op-
erating.)
ON
• Vehicle stopped
• Engine running
• 4WD shift switch: 2WD (Wait function is not operating.)
OFF
N POSI SW AT [ON/
OFF]
Input condition from
transmission range
switch
• Vehicle stopped
• Engine running
• Brake pedal depressed
A/T selector lever posi-
tion: N
ON
Except the above
OFF
R POSI SW AT [ON/
OFF]
Input condition from
transmission range
switch
• Vehicle stopped
• Engine running
• Brake pedal depressed
A/T selector lever posi-
tion: R
ON
Except the above
OFF
P POSI SW AT [ON/OFF]
Input condition from
transmission range
switch
• Vehicle stopped
• Engine running
• Brake pedal depressed
A/T selector lever posi-
tion: P
ON
Except the above
OFF
ABS OPER SW [ON/
OFF]
Condition of ABS operat-
ing
ABS is operating.
ON
ABS is not operating.
OFF
VDC OPER SW [ON/
OFF]
Condition of VDC operat-
ing
VDC is operating.
ON
VDC is not operating.
OFF
TCS OPER SW [ON/
OFF]
Condition of TCS operat-
ing
TCS is operating.
ON
TCS is not operating.
OFF
THROTTLE POSI [0.0/8]
Condition of throttle
opening
When depressing accelerator pedal
(Value rises gradually in response to throttle position.)
0.0/8 - 8.0/8
4WD MODE [AUTO/
LOCK/2WD/4L]
Control status of 4WD
(Output condition of 4WD
shift indicator lamp and
4LO indicator lamp)
• Vehicle stopped
• Engine running
• A/T selector lever N posi-
tion
• Brake pedal depressed
4WD shift switch: 2WD
2WD
4WD shift switch: AUTO
AUTO
4WD shift switch: 4H
LOCK
4WD shift switch: 4LO
4L
Monitored item [Unit]
Content
Condition
Display value
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