Toyota 3S-GE Repair Manual page 277

ENGINE — EFI SYSTEM EG'263
EFI MAIN RELAY
(SW20)
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EFI MAIN RELAY INSPECTION
REMOVE EFI MAIN RELAY
LOCATION: In the engine compartment relay box.
1.
No continuity
Continuity
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4
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BEOOOS
INSPECT EFI MAIN RELAY
Inspect relay continuity
Using an ohmmeter, check that there is continuity
between terminals 1 and 3.
Check that there is no continuity between terminals 2
and 4.
If continuity is not as specified, replace the EFI main
relay.
2.
A.
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Continuity
Battery
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BEOO1O
B.
la)
lb)
Inspect relay operation
Apply battery voltage across terminals 1 and 3.
Using an ohmmeter, check that there is continuity
between terminals 2 and 4.
If operation is not as specified, replace the EFI main
relay.
~ 3. REINSTALL EFI MAIN RELAY