Precaut|On - Toyota 3S-GE Repair Manual

EG-170
ENGINE - EFI SYSTEM _ _
Negative (-) Terminal Cable PRECAUTIQN A
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Before working on the fuel system. disconnect the
negative (—) terminal cable from the battery.
HINT: Any diagnostic code retained by the computer
will be erased when the negative (—) terminal cable is
disconnected.
Therefore, if necessary, read the diagnosis before dis-
connecting the negative (—) terminal cable from the
battery.
Do not smoke or work near an open flame when
working on the fuel system.
Keep gasoline away from rubber or leather parts.
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MAINTENANCE PRECAUTIONS j
1. CHECK CORRECT ENGINE TUNE—UP
(See page EG—12)
PRECAUTION WHEN CONNECTING GAUGE
Use battery as the power source for the timing light,
tachometer, etc.
Connect the tester probe of a tachometer to the termi-
nal IGG) of the check connector. F
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3. IN EVENT OF ENGINE MISFIRE, FOLLOWING
PRECAUTIONS SHOULD BE TAKEN _
Check proper connection of battery terminals, etc.
Handle high—tension cords carefully.
After repair work, check that the ignition coil termi-
nals and all other ignition system lines are reconne-
cted securely.
When cleaning the engine compartment, be especially
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careful to protect the electrical system from water.