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PGM-FI main relay 1, 2, Rear window defogger relay
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Disconnect the under-hood fuse/relay box connector D (20P).
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At the under-hood fuse/relay box side, do the following test.
PGM-FI main relay:
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Connect the No. 20 terminal and the body ground. There should be battery voltage between the No. 17 terminal and the body ground.
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Disconnect the No. 20 terminal from the body ground. There should be no voltage between the No. 17 terminal and the body ground.
PGM-FI main relay 2:
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Connect the No. 20 terminal and the body ground. There should be battery voltage between the No. 8, No. 9, No. 18, No. 19 terminal and the body ground.
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Disconnect the No. 20 terminal from the body ground. There should be no voltage between the No. 8, No. 9, No. 18, No. 19 terminal and the body ground.
Rear window defogger relay:
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Connect power to the No. 18, and ground to the No. 4 terminals. There should be battery voltage between the No. 3 terminal and the body ground.
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Disconnect power from the No. 18, and ground from the No. 4 terminals. There should be no voltage between the No. 3 terminal and the body ground.
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