MX-5 Miata L4-1597cc 1.6L DOHC (1992)
Brake Fluid Pump Relay: Testing and Inspection
Fig. 36 Motor Relay Connector Pin Identification.
Fig. 37 Motor Relay Continuity Specifications.
1.
Disconnect battery ground cable, then remove motor relay.
2.
Using ohmmeter, check for continuity at relay terminals, Fig. 36 and 37.
3.
If continuity is not as specified, replace motor relay.
4.
If continuity is as specified, check wiring harness from motor relay to control unit main fuse.