Inspection Procedure

NOTE:

Turn the engine switch off before measuring the resistances of CAN bus main wires and CAN bus branch wires.
After the engine switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.
Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the engine switch, any other switches, or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.

CHECK CAN NO. 1 BUS WIRE (CENTER AIRBAG SENSOR BRANCH WIRE)

Turn the engine switch off
Disconnect the center airbag sensor connector.

Fig 1: Identifying Center Air Bag Sensor Connector E6 Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value(s) in the table below

Standard Resistance

RESISTANCE REFERENCE

Tester Connection	Condition	Specified Value
E6-13 (CANH) - E6-22 (CANL)	Engine switch off	54 to 69 Ω

NG: REPAIR OR REPLACE CAN NO. 1 BUS BRANCH WIRE OR CONNECTOR (CENTER AIRBAG SENSOR)

OK: Go to next step

CHECK WIRE HARNESS (IG2, E1, E2)

Measure the resistance according to the value(s) in the table below.

Standard Resistance

RESISTANCE REFERENCE

Tester Connection	Condition	Specified Value
E6-25 (E1) - Body ground	Always	Below 1 Ω
E6-26 (E2) - Body ground	Always	Below 1 Ω

Fig 2: Identifying Center Air Bag Sensor Connector Terminals

Measure the voltage according to the value(s) in the table below.

Standard Voltage

VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Value
E6-21 (IG2) - Body ground	Engine switch on (IG)	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE CENTER AIRBAG SENSOR (See REMOVAL )