DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
WARNING:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
REMOVE CIRCUIT OPENING RELAY (Marking: C/OPN)
1. Remove the engine room No. 2 relay block cover.
2. Remove the circuit opening relay from the engine room No. 2 relay block.

INSPECT CIRCUIT OPENING RELAY

Measure the resistance of the circuit opening relay.

Fig 1: Inspecting Circuit Opening Relay

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance

Tester Connection	Specified Condition
3 - 5	10 kΩ or higher
3 - 5	Below 1 Ω (when battery voltage is applied to terminals 1 and 2)

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

INSTALL CIRCUIT OPENING RELAY
CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
PERFORM INITIALIZATION
1. Perform initialization. Refer to INITIALIZATION .
  NOTE:
  Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

On-Vehicle Inspection (To 10/2008)