overheating NISSAN 350Z 2007 Z33 Brake Control System Workshop Manual

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