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1. Checking the conductivity of the relay circuits.
a) Check for conductivity between terminals 1 and 2.
b) Check for conductivity between terminals 3 and 4.
c) Check for continuity between terminals 1 and 3.
If the test results are negative, replace the relay.
2. Checking the operation of the relay.
a) Connect the battery to terminals 1 and 2 of the relay.
b) Check for conductivity between terminals 3 and 4.
[The article was copied from the portal ToyotaMAN.ru]
c) Check for continuity between terminals 1 and 3.
If the test results are negative, replace the relay.
