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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 (UNIT B: EFI RELAY M RELAY)

NOTE:

The EFI relay is built into the integration relay (unit B: 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.
HINT:

Tape the screwdriver tip before use.
Disconnect the 3 connectors from the integration relay.

Fig 1: Disconnecting Integration Relay From Engine Room No. 1 Junction Block
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance between the terminals.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
3I-5 - 3I-8	10 kΩ or higher
3I-5 - 3I-8	Below 1 Ω (when battery voltage is applied to terminals 3I-6 and 3I-7)

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

Connect the 3 connectors to the integration relay.
Install the integration relay to the engine room No. 1 junction block.

CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
PERFORM INITIALIZATION
1. Perform initialization (see INITIALIZATION ).
  NOTE: Certain system need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.
  
  Fig 2: Measuring Resistance Between Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002