IN0253
WRONG
CORRECT
IN0252
WRONG
CORRECT
IN0002
Example
IN--6
--
INTRODUCTION
REPAIR INSTRUCTIONS
(l)
Observe the following precautions to avoid damage to the
following parts:
(1)
Do not open the cover or case of the ECU unless
absolutely necessary. (If the IC terminals are
touched, the IC may be destroyed by static electric-
ity.)
(2)
To disconnect vacuum hoses, pull on the end, not
the middle of the hose.
(3)
To pull apart electrical connectors, pull on the con-
nector itself, not the wires.
(4)
Be careful not to drop electrical components, such
as sensors or relays. If they are dropped on a hard
floor, they should be replaced and not reused.
(5)
When steam cleaning an engine, protect the elec-
tronic components, air filter and emissions--related
components from water.
(6)
Never use an impact wrench to remove or install
temperature switches or temperature sensors.
(7)
When checking continuity at the wire connector, in-
sert the tester probe carefully to prevent terminals
from bending.
(8)
When using a vacuum gauge, never force the hose
onto a connector that is too large. Use a step--down
adapter instead. Once the hose has been
stretched, it may leak.
(m) Tag hoses before disconnecting them:
(1)
When disconnecting vacuum hoses, use tags to
identify how they should be reconnected.
(2)
After completing a job, double check that the vacu-
um hoses are properly connected. A label under the
hood shows the proper layout.
(n)
Unless otherwise stated, all resistance is measured at an
ambient temperature of 20
˚
C (68
˚
F). Because the resis-
tance may be outside specifications if measured at high
temperatures immediately after the vehicle has been run-
ning, measurements should be made when the engine
has cooled down.
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