No and no.

If the relay board has cracks then it reacts differently depending on ambient temeratures. The cracks are so fine that the solder expands and contracts according to the temperature and the temp is determined by what the engine is doing... running, not running, running hard, summer or winter etc. When expanded the current flows and when contracted... no current flow.

To test pull the relay... pull off the cover from the bottom plate and examine back of board with a magnifying glass. Look for circular cracks around the pins on the back of the board.

Regarding OVP. The fuse is no idicator of the condition of the relay. Its there to protect the relay against nasty events. The relay usually goes bad without affecting the fuse. The primary indicator of a bad OVP is the light for the air bags etc.

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Earl



1993 190E 2.3
2000 Toyota 4x4 Tundra