Airbag System (For Hatchback Without Vsc) Tc And Cg Terminal Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (DLC3 - ECM)

CHECK HARNESS AND CONNECTOR (CG OF DLC3 - BODY GROUND)

CHECK HARNESS AND CONNECTOR (TC OF ECM)

CHECK ECM

DESCRIPTION

HINT:

1. Make sure that DTCs which relate to the CAN communication system are not output. If any of these DTCs are output, check the CAN communication system (YARIS_NCP93 RM000001RSW02LX.html).
   
2. When a warning light keeps blinking, a short to ground in the wiring of terminal TC of the DLC3 or an internal ground short in an ECU is suspected.
   
3. The DTC output mode signal is transmitted through the CAN to each ECU including the airbag sensor assembly. Thus if no systems enter DTC output mode, the ECM may have a malfunction.
   

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Turn the ignition switch off.
   

2. Disconnect the connector from the ECM.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   D102-13 (TC) - A72-23 (TC)	Always	Below 1 Ω

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   D102-4 (CG) - Body ground	Always	Below 1 Ω

   Text in Illustration

   *1

   DLC3

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   A72-23 (TC) - Body ground	Always	1 MΩ or higher

   Text in Illustration

   *a	Front view of wire harness connector (to ECM)

1. Replace the ECM (YARIS_NCP93 RM000001CN002IX.html).
   

2. Check for DTCs of the ECM.
   

   Result

   Result	Proceed to
   Normal code is output	A
   DTC is output	B
   DTC output mode is set (except airbag sensor assembly)	C