Nissan Maxima. Instruction — part 251
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-25
< SYSTEM DESCRIPTION >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
*: On for 1 to 2 seconds after the touch, and then Off
ABS MOTOR
• Touch “On” and “Off” on screen. Make sure motor relay, actuator relay, V/R output and M/R output operate
as shown in table below.
WORK SUPPORT
RR LH ABS SOLENOID (ACT)
RR LH IN SOL
—
—
—
Off
Off
Off
RR LH OUT SOL
—
—
—
Off
Off
Off
USV[FL-RR]
—
—
—
Off
Off
Off
USV[FR-RL]
—
—
—
Off
On
On
HSV[FL-RR]
—
—
—
Off
Off
Off
HSV[FR-RL]
—
—
—
Off
On*
Off
Operation
ABS solenoid valve
ABS solenoid valve (ACT)
Up
Keep
Down
Up
ACT UP
ACT KEEP
Operation
On
Off
MOTOR RELAY
On
Off
ACTUATOR RLY
On
On
V/R OUTPUT
On
On
M/R OUTPUT
On
Off
Conditions
Description
ST ANGLE SENSOR ADJUSTMENT
Steering angle sensor neutral position adjustment can be per-
formed. Refer to
BRC-6, "ADJUSTMENT OF STEERING ANGLE
BRC-26
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C1101, C1102, C1103, C1104 WHEEL SENSOR
DTC/CIRCUIT DIAGNOSIS
C1101, C1102, C1103, C1104 WHEEL SENSOR
DTC Logic
INFOID:0000000010062762
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF DIAGNOSTIC RESULT
With
CONSULT.
1. Start engine and drive vehicle at approximately 21 km/h (13 MPH) or more for approximately 5 minutes.
2. Perform self diagnostic result.
Is DTC C1101, C1102, C1103 or C1104 detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010062763
Regarding Wiring Diagram information, refer to
CAUTION:
Do not check between wheel sensor terminals.
1.
CONFIRM DTC
With CONSULT
1. Perform self-diagnostic result of ABS and record all active DTCs.
2. Clear all DTCs.
3. Perform DTC confirmation procedure. Refer to
.
Does DTC C1101, C1102, C1103 or C1104 reset?
YES
>> GO TO 2.
NO
>> Refer to
GI-41, "Intermittent Incident"
.
2.
INSPECT WHEEL SENSOR
Inspect the suspect wheel sensor for damage or deformation.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace as necessary.
DTC
Display Item
Malfunction detected condition
Possible causes
C1101
RR RH SENSOR-1
• When power supply voltage of rear wheel sensor
RH is low.
• When an open or shorted circuit is detected in rear
wheel sensor RH circuit.
• Harness or connector
• Wheel sensor
• ABS actuator and electric unit
(control unit)
C1102
RR LH SENSOR-1
• When power supply voltage of rear wheel sensor
LH is low.
• When an open or shorted circuit is detected in rear
wheel sensor LH circuit.
C1103
FR RH SENSOR-1
• When power supply voltage of front wheel sensor
RH is low.
• When an open or shorted circuit is detected in front
wheel sensor RH circuit.
C1104
FR LH SENSOR-1
• When power supply voltage of front wheel sensor
LH is low.
• When an open or shorted circuit is detected in front
wheel sensor LH circuit.
C1101, C1102, C1103, C1104 WHEEL SENSOR
BRC-27
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
3.
HARNESS AND CONNECTOR INSPECTION
1. Disconnect ABS actuator and electric unit (control unit) connector E26 and wheel sensor connector of
suspect wheel.
2. Check harness, connectors and terminals for corrosion, deformation, disconnection, looseness or dam-
age.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace as necessary.
4.
CHECK WHEEL SENSOR OUTPUT SIGNAL
1. Connect ABS active wheel sensor tester (J-45741) to wheel sensor using appropriate adapter.
2. Turn on the ABS active wheel sensor tester power switch.
NOTE:
The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace the
battery in the ABS active wheel sensor tester before proceeding.
3. Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the ABS active wheel
sensor tester. The red SENSOR indicator should flash on and off to indicate an output signal.
NOTE:
If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and
retest.
Does the ABS active wheel sensor tester detect a signal?
YES
>> GO TO 5.
NO
>> Replace the wheel sensor. Refer to
BRC-102, "Removal and Installation - Front Wheel Sensor"
BRC-103, "Removal and Installation - Rear Wheel Sensor"
.
5.
CHECK WIRING HARNESS FOR SHORT TO VOLTAGE
1. Turn ignition switch ON.
2. Check voltage between wheel sensor harness connector terminals of suspect wheel and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair the circuit.
6.
CHECK WIRING HARNESS FOR SHORT TO GROUND
1. Turn ignition switch OFF.
2. Check continuity between wheel sensor harness connector terminals of suspect wheel and ground.
Wheel Sensor
Ground
Voltage
Wheel
Connector
Terminal
Front LH
E19
1
—
0V
2
Front RH
E41
1
2
Rear LH
C1
1
2
Rear RH
C2
1
2
Wheel Sensor
Ground
Continuity
Wheel
Connector
Terminal
BRC-28
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C1101, C1102, C1103, C1104 WHEEL SENSOR
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair the circuit.
7.
CHECK WIRING HARNESS FOR SHORT BETWEEN CIRCUITS
Check continuity between wheel sensor harness connector terminals of suspect wheel.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair the circuit.
8.
CHECK WIRING HARNESS FOR OPEN CIRCUIT
Check continuity between ABS actuator and electric unit (control unit) connector E26 and wheel sensor con-
nector of wheel with DTC.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair the circuit.
9.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between ABS actuator and electric unit (control unit) harness connector E26 terminal and
ground.
Front LH
E19
1
—
No
2
Front RH
E41
1
2
Rear LH
C1
1
2
Rear RH
C2
1
2
Wheel Sensor
(+)
(-)
Continuity
Wheel
Connector
Terminal
Terminal
Front LH
E19
1
2
No
Front RH
E41
Rear LH
C1
Rear RH
C2
Wheel sensor
ABS actuator and electric unit (control unit)
Wheel sensor
Continuity
Connector
Terminal
Connector
Terminal
Yes
Front LH
E26
5
E19
2
16
1
Front RH
10
E41
2
9
1
Rear LH
17
C1
2
6
1
Rear RH
19
C2
2
8
1
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