Circuit Opening Relay: Inspection

REMOVE RELAY BOX COVER
REMOVE CIRCUIT OPENING RELAY (Marking: C/OPN)

Fig 1: Removing Relay Box Cover & Circuit Opening Relay
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT CIRCUIT OPENING RELAY
1. Inspect the relay continuity.
  1. Using an ohmmeter, check that there is continuity between terminals 1 and 2.
    If there is no continuity, replace the relay.
  2. Check that there is no continuity between terminals 3 and 5.
    If there is continuity, replace the relay.
    
    Fig 2: Checking Continuity Between Terminals 1 + 2 & No Continuity Between Terminals 3 + 5 Using Ohmmeter
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Inspect the relay operation.
  1. Apply battery positive voltage to terminals 1 and 2.
  2. Using an ohmmeter, check that there is continuity between terminals 3 and 5.
  If there is no continuity, replace the relay.
REINSTALL CIRCUIT OPENING RELAY
REINSTALL RELAY BOX COVER