Toyota 3F-E - Page 74

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EFI SYSTEM —
Troubleshooting
FI-1
OK CONTINUED FROM PAGE FI-14
CHECK FUEL PRESSURE
(See page FI-45)
BAD
OK
Fuel pump (See page FI-44)
2.
Fuel filter
3.
Fuel pressure regulator (See page FI-53)
CHECK INJECTORS
(See page FI-55)
OK
CHECK EFI ELECTRONIC CIRCUIT
USING
VOLT
/OHMMETER
(See page FI-27)
Injection condition
BAD
1. Wiring connections
2. Power to ECU
BAD
(1)
Fusible links
(2) Fuses
(3) EFI main relay (See page FI-70)
3. Air flow meter (See page FI-62)
4. Water temp. sensor (See page FI-73)
5. Air temp. sensor (See page FI-62)
6. Injection signal circuit
(1) Injector wiring
(2) ECU (See page FI-77)
7. Oxygen sensors (See page FI-75)
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