If Vehicle Is Equipped With Mobile Radio System (Ham, Cb, Etc) - Toyota 22R-E Service Manual

EG2–166
ENGINE – MFI SYSTEM
IF VEHICLE IS EQUIPPED WITH MOBILE
RADIO SYSTEM (HAM, CB, ETC)
The ECM has been designed so that it will not be
affected by outside interference.
However, if your vehicle is equipped with a amateur
radio transceiver, etc. (even one with approx. 10 W
output), it may, at times, have an effect upon ECM
operation, especially if the antenna and feeder are
installed nearby.
Therefore, observe the following precautions:
(a) Install the antenna as far away as possible from the
ECM. The ECM is located in the right side kick panel
so the antenna should be installed at the rear, left side
of the vehicle.
If installing on the bumper, do so on the right side, if
possible.
(b) Keep the antenna feeder as far away as possible from
the ECM wires – at least 20 cm (7.87 in.) – and,
especially, do not wind them together.
(c) Check that the feeder and antenna are properly adj–
usted.
(d) Do not equip your vehicle with a powerful mobile
radio system.
(e) Do not open the cover or the case of the ECM unless
absolutely necessary. (If the IC terminals are touched,
the IC may be destroyed by static electricity.)
AIR INDUCTION SYSTEM
1. Separation of the engine oil dipstick, oil filler cap, PCV
hose, etc. may cause the engine to run out of tune.
2. Disconnection, looseness or cracks in the parts of the
air induction system between the volume air flow
meter and cylinder head will cause air suction and
cause bad engine tuning.
ELECTRONIC CONTROL SYSTEM
1. Before removing MFI wiring connectors, terminals,
etc., first disconnect the power by either turning the
ignition switch OFF or disconnecting the battery ter–
minals.
2. When installing a battery, be especially careful not to
incorrectly connect the positive and negative cables.