On-Vehicle Inspection
- 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.
- INSPECT INTEGRATION RELAY NOTE:
- 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.
- Using a screwdriver, detach the 2 claws and disconnect the integration relay from the engine room No. 1 junction block.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
HINT:
Tape the screwdriver tip before use.
- Disconnect the 3 connectors from the integration relay.
- Inspect the EFI MAIN relay.
- Check the resistance of the EFI MAIN fuse. If the result is not as specified, replace the EFI MAIN fuse.
- Measure the resistance of the integration relay.
Standard resistance
CONNECTOR TERMINALS RESISTANCE REFERENCE AND CONDITIONTester Connection Specified Condition 1A-4 - 1C-1 10 kΩ or higher 1A-4 - 1A-1 1A-4 - 1C-1 Below 1 Ω (when battery voltage is applied to terminals 1A-3 and 1A-2) 1A-4 - 1A-1 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If the result is not as specified, replace the integration relay.
- Inspect the A/F relay.
- Check the resistance of the A/F fuse. If the result is not as specified, replace the A/F fuse.
- Measure the resistance of the integration relay.
Standard resistance
CONNECTOR TERMINALS RESISTANCE REFERENCE AND CONDITIONTester Connection Specified Condition 1B-8 - 1C-1 10 kΩ or higher 1B-8 - 1B-5 1B-8 - 1C-1 Below 1 Ω (when battery voltage is applied to terminals 1B-6 and 1B-7) 1B-8 - 1B-5 If the result is not as specified, replace the integration relay.
- CONNECT CABLE TO NEGATIVE BATTERY TERMINAL