Integration Relay

2GR-FE ENGINE CONTROL SYSTEM: INTEGRATION RELAY: ON-VEHICLE INSPECTION

1. PRECAUTION

NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work Service Precautions.

2. 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.

3. INSPECT INTEGRATION RELAY

NOTICE:
* The EFI relay is built into the integration relay (unit A: EFI MAIN).
* 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 engine room No. 1 junction block.





HINT
Tape the screwdriver tip before use.

(b) Disconnect the 3 connectors from the integration relay.

(c) Inspect the EFI MAIN relay.

(1) Check the resistance of the EFI MAIN fuse.





If the result is not as specified, replace the EFI MAIN fuse.

(2) Measure the resistance of the integration relay.

Standard resistance:





If the result is not as specified, replace the integration relay.

(d) Inspect the A/F relay.

(1) Check the resistance of the A/F fuse.





If the result is not as specified, replace the A/F fuse.

(2) Measure the resistance of the integration relay.

Standard resistance:





If the result is not as specified, replace the integration relay.

4. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL