Airbag System Tc And Cg Terminal Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK WIRE HARNESS (TC OF DLC3 - TC OF ECM)
CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND)
CHECK WIRE HARNESS (TC OF DLC3 - BODY GROUND)
AIRBAG SYSTEM - TC and CG Terminal Circuit |
DESCRIPTION
DTC output mode is set by connecting terminals TC and CG of the DLC3.DTCs are indicated by blinking pattern of the SRS warning light.- HINT:
- When the SRS warning light remains blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in the center airbag sensor assembly is suspected.
- A DTC output mode signal is transmitted through the CAN communication system to each ECU including the center airbag sensor assembly. Thus when all systems do not enter DTC output mode, there may be an ECM malfunction.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK WIRE HARNESS (TC OF DLC3 - TC OF ECM) |
Turn the ignition switch off.
Disconnect the connector from the ECM.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
- for 2ZR-FE:
Tester Connection
| Condition
| Specified Condition
|
E11-13 (TC) - A50-41 (TC)
| Always
| Below 1 Ω
|
- for 2AZ-FE:
Tester Connection
| Condition
| Specified Condition
|
E11-13 (TC) - A50-27 (TC)
| Always
| Below 1 Ω
|
| 2.CHECK WIRE HARNESS (CG OF DLC3 - BODY GROUND) |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
E11-4 (CG) - Body ground
| Always
| Below 1 Ω
|
| 3.CHECK WIRE HARNESS (TC OF DLC3 - BODY GROUND) |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
E11-13 (TC) - Body ground
| Always
| 1 MΩ or higher
|
| | REPLACE WIRE HARNESS OR EACH ECU |
|
|
