Repair and Diagnosis: Service and Repair

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PRINTED CIRCUIT BOARD (PCB) RELAYS
Printed circuit board (PCB) relays are an integeral part of the bussed electrical center or fuse block and cannot be repaired or replaced.

If any PCB relay needs to be repaired or replaced the bussed electrical center or fuse block must be replaced.

PCB relays can be identified using the fuse block label on most vehicles.

For PCB Relay diagnosis, refer to Vehicle / Testing and Inspection / Component Tests and General Diagnostics Printed Circuit Board (PCB) Relay Testing