Pickup 4WD V6-180.5 2959cc 3.0L SOHC (3VZ-E) (1990)
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EFI Main Relay: Testing and Inspection
Component Test
INSPECTION OF EFI MAIN RELAY
1. INSPECT RELAY CONTINUITY
a. Using an ohmmeter, check that there is continuity between terminals 1 and 3.
b. Check that there is no continuity between terminals 2 and 4.
c. Check that there is no continuity between terminals 3 and 4.
If continuity is not as specified, replace the relay.
2. INSPECT RELAY OPERATION
a. Apply battery voltage across terminals 1 and 3.
b. Using an ohmmeter, check that there is continuity between terminals 2 and 4.
If operation is not as specified, replace the relay.
