SERVICE PRECAUTIONS
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-5
DANGER
After disconnecting the battery cable, wait 60
seconds or more before proceeding with the
following work. In addition, insulate the neg-
ative battery terminal with a tape. The con-
denser inside the SRS-ECU is designed to
retain enough voltage to deploy the air bag
for a short time even after the battery has
been disconnected, so serious injury may
result from unintended air bag deployment if
work is done on the SRS system immediately
after the battery cables are disconnected.
CAUTION
The SRS components and seat belt with pre-ten-
sioner should not be subjected to heat, so
remove the front impact sensors, SRS-ECU,
driver’s and passenger’s (front) air bag modules,
clock spring, and seat belt pre-tensioner before
drying or baking the vehicle after painting.
• Front impact sensors, SRS-ECU, air bag mod-
ules, clock spring: 93
°C or more
• Seat belt with pre-tensioner: 90°C or more
CAUTION
Whenever you finish servicing the SRS, always
erase the diagnosis code and check warning
lamp operation to make sure that the system
functions properly.
CAUTION
If checks are carried out by using the SRS-ECU
harness connector, observe the following proce-
dures: Insert the special tool extra fine probe
(MB992006) into connector from harness side
(rear side), and connect the tester to this probe. If
any tool than special tool is used, damage to the
harness and other components will result. Never
insert the probe directly to the terminals from the
front of the connector. The terminals are plated
to increase their conductivity, so that if they are
touched directly by the probe, the plating may
break, which will cause drops in reliability.
AC300580AB
Insulating tape
Battery
Battery cable
AC006195
SRS-harness connector
SRS-ECU harness connector
(rear side)
AH
MB992006