The confusion arises since 1985 and the introduction of LH2.2, the system and fuel pump relays have been combined into one box (usually, but not always white) and variously called "fuel relay," "fuel injection relay," "main relay," and for those who've had trouble with them, names not to be used in front of small children.

The 217 is present in your car and shown in the drawing in grid J2 on p/390-64. If you look on the drawing, or inside the physical box, you will find two separate relays.

One comes on with the key to provide battery power for the AMM, idle air valve, and the fuel injection computer (ECU) on the red/black wiring. That individual relay is called the system relay.

The other comes on only briefly at key on, and then again when the engine is turning (ignition pulses detected) and provides battery power to the two fuel pumps and the oxygen sensor heater, all connected to one or the other side of fuse #4 on red/yellow wiring.

The 216/217 designation you see in the overall relay drawing on 390-3 refers to separate relays used in only two model years, 1983 and 84, in LH2.0 systems. Yours is LH2.4. That drawing sucks for the purpose it was intended.


--
Art Benstein near Baltimore

"Sometimes I think the greatest talent of all is perseverance. But only sometimes." -Mitch Albom