Inspection Procedure

1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch to the ON position.
3. Select the following menu items: DIAGNOSIS / OBD/ MOBD / SRS AIRBAG / DTC.
4. Read output DTC.

   Result: 

   DTCs for the airbag system are output. 

YES: GO TO  DTC CHART 

NO: Go to next step 

1. Connect the oscilloscope tester to the HV control ECU terminals specified in the table below and check the waveform.
   WAVEFORM SIGNAL REFERENCE
   
   

   Item	Contents
   Terminal	ABFS (H29-8) - E1 (H31-5)
   Equipment Setting	5V/DIV, 500 ms/DIV
   Condition	READY-on state

   OK: The waveform appears as shown in the illustration. 

NG: GO TO step   4 

Fig 1: Inspect Hybrid Vehicle Control ECU Connectors Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

NEXT: REPLACE HYBRID VEHICLE CONTROL ECU 

1. Turn the ignition switch off.
2. Disconnect the A20 connector from the airbag sensor assembly center.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   GSW2 (A20-23) - E1 (A20-27)	10 kΩ or higher

NG: REPLACE AIR BAG SENSOR ASSEMBLY CENTER 

Fig 2: Disconnecting A20 Connector From Airbag Sensor Assembly Center

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Disconnect the H29 connector from the HV control ECU.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   ABFS (H29-8) or GSW2 (A20-23) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 3: Disconnecting H29 Connector From HV Control ECU

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE HYBRID VEHICLE CONTROL ECU