Circuit Opening Relay

1NZ-FXE ENGINE CONTROL SYSTEM: CIRCUIT OPENING RELAY: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.

2. INSPECT INTEGRATION RELAY (UNIT C: C/OPN RELAY)
NOTICE:
- The EFI relay is built into the integration relay (unit C: C/OPN RELAY).
- Some relays are built into the integration relay. The integration relay cannot be disassembled. If there is a malfunction in the circuit of the integration relay, replace the integration relay.





(a) Using a screwdriver, detach the 2 claws and disconnect the integration relay from the No. 1 engine room junction block.
HINT: Tape the screwdriver tip before use.

(b) Disconnect the 2 connectors from the integration relay.





(c) Measure the resistance between the terminals.
Standard resistance:





If the result is not as specified, replace the integration relay.
(d) Connect the 2 connectors to the integration relay.
(e) Install the integration relay to the engine room No. 1 junction block.
3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
4. PERFORM INITIALIZATION
(a) Perform initialization Repair Instruction - Initialization.
NOTE: Certain system need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.