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 INSTRUMENT PANEL JUNCTION BLOCK

NOTE: The circuit opening (C/OPN) relay is built into the instrument panel junction block.

Measure the resistance between the terminals.

Fig 1: Identifying Instrument Panel Junction Block

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
1B-11 - 1A-8	10 kΩ or higher
1B-11 - 1A-8	Below 1 Ω (when battery voltage is applied to terminals 1E-5 and 1D-1)

If the result is not as specified, replace the instrument panel junction block.