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Circuit Opening Relay

WARNING: This page is about a different car, the 1994 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
  1. With relay connected, ensure specified voltage is present at relay terminals. See CIRCUIT OPENING RELAY CIRCUIT VOLTAGE  table. For location of circuit opening relays, see CIRCUIT OPENING RELAY LOCATION  table.
  2. If voltages are okay, remove relay from vehicle. Check relay operation using a 12-volt battery source and perform resistance tests. See Fig 1 .
CIRCUIT OPENING RELAY LOCATION

Application Location
Miata Under Dash, Left Of Steering Column
CIRCUIT OPENING RELAY CIRCUIT VOLTAGE

Terminal Ignition ON: Volts Ignition START: Volts Idle Volts
Fp 0 12 12
Fc 12 0 0
B 12 12 12
STA 0 12 0
E1 0 0 0
Fig 1: Testing Circuit Opening Relay
G117621Courtesy of MAZDA MOTORS CORP.