relay NISSAN 350Z 2007 Z33 Brake Control System Owner's Manual

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-117
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
4. CHECK ABS MOTOR AND MOTOR RELAY HARNESS
1. Turn ignition switch OFF and disconnect VDC/TCS/ABS control
unit connector B114 and VDC relay box connector E47.
2. Check continuity between VDC/TCS/ABS control unit connector
and VDC relay box vehicle side connector.
3. Check if the actuator motor operates when a 12 V voltage is
applied to the VDC relay box connector E222 terminal 12.
CAUTION:
Operate the actuator motor for 4 seconds or less to prevent
heat generation.
OK or NG
OK >> GO TO 5.
NG >> The actuator motor or actuator motor circuit open or short in harness. Repair or replace the actua-
tor motor or actuator motor circuit harness.
5. CHECK ABS MOTOR RELAY
ABS motor relay independent inspection. Refer toBRC-123, "
ABS MOTOR RELAY AND ACTUATOR RELAY"
.
OK or NG
OK >> Replace VDC actuator assembly.
NG >> Replace VDC relay box.
VDC/TCS/ABS control unit VDC relay box Continuity
20 4
Ye s
78
SFIA1893E
PFIA0288E

BRC-118
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 November2007 350Z
Actuator Relay SystemNFS0004L
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Disconnect VDC relay box connector E47, E48, E222 and VDC/TCS/ABS control unit connector B114 and
check terminals for deformation, disconnection, looseness, and so on. If there is an error, repair or replace
the terminal.
2. Securely reconnect the connectors and then preform self-diagnosis.
Is the result of self-diagnosis normal?
YES >> The connector terminal contact is loose, damaged, open or shorted.
NO >> GO TO 3.
3. CHECK ACTUATOR RELAY POWER SYSTEM
1. Turn ignition switch OFF and disconnect VDC relay box connec-
tor E48.
2. Check voltage between VDC relay box connector and ground.
OK or NG
OK >> GO TO 4.
NG >> The circuit between battery and VDC relay box harness
connector E48 terminal 9 is open or shorted. Repair the
circuit.
4. CHECK ACTUATOR RELAY HARNESS
1. Disconnect VDC/TCS/ABS control unit connector B114.
2. Check continuity between VDC/TCS/ABS control unit connector
and VDC relay box connector E47.
OK or NG
OK >> GO TO 5.
NG >> Open or short in harness. Repair or replace the harness.
5. CHECK ACTUATOR RELAY
Independently check VDC actuator relay. Refer to BRC-123, "
ABS MOTOR RELAY AND ACTUATOR RELAY"
.
OK or NG
OK >> Replace VDC actuator assembly.
NG >> Replace VDC relay box.
Self-diagnosis results
MAIN RELAY
VDC relay box Ground Voltage
9 — Battery voltage (Approx. 12 V)
SFIA1894E
VDC/TCS/ABS control unit VDC relay box Continuity
25
Ye s
36 7
SFIA1895E

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-123
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
ABS MOTOR RELAY AND ACTUATOR RELAY

Turn ignition switch OFF and disconnect the VDC relay box con-
nector E47, E48, E222.

Apply a voltage of 12 V between the ABS motor relay terminal 8
and the actuator relay terminal 7 and then check the continuity
between the following terminals.
VDC/TCS/ABS ACTUATOR
Actuator Operation Inspection
1. Turn ignition switch ON, apply a voltage of 12 V between the
relay box terminal 5 and 8, use an oscilloscope to measure the
motor voltage at this time (between terminal 11 and the ground),
and check the motor reverse voltage occurrence time when
operation is stopped.
CAUTION:

The above check should be performed after motor relay
unit inspection to make sure relay operates normally.

To prevent overheating, do not drive actuator motor more
than 4 seconds.

The motor reverse voltage occurrence time is standard
when the battery voltage is 12 V and the air temperature is
20°C (68°F), and this time is a little shorter when the battery
voltage is low or the air temperature is low.
ABS motor relay Between terminal 4 to 10 Continuity should exist.
Actuator relay Between terminal 9 to 12 Continuity should exist.
PFIA0287E
Motor counter-electromotive force duration:
0.1 second or more
SFIA1900E