Circuit Opening Relay

Ensure ignition is off. Remove circuit opening relay. See CIRCUIT OPENING RELAY LOCATION table. Using ohmmeter, check continuity between specified terminals. See Fig 1-Fig 4 .
Check circuit opening relay operation by applying battery voltage and checking continuity between specified terminals. See Fig 1-Fig 4 . Replace circuit opening relay if defective.

NOTE: Circuit opening relay may also be identified by appropriate illustration in THEORY/OPERATION article in the ENGINE PERFORMANCE Section or wire color. See appropriate wiring diagram in WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section.

CIRCUIT OPENING RELAY LOCATION

Application	Location
Celica	Bottom Center Of Dash, In Front Of Console, Attached To ECU

Fig 1: Testing Circuit Opening Relay - Checking Continuity (Turbo)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Testing Circuit Opening Relay - Checking Operation (Turbo)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Testing Ckt Opening Relay - Checking Continuity (1.6L 4A-FE & 2.2L 5S-FE)

Fig 4: Testing Ckt Opening Relay - Checking Operation (1.6L 4A-FE & 2.2L 5S-FE)