DTC B1150
Precautions: Precautions for Diagnosing Trouble · Precautions for Control Systems · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
B1150: Air Bag Communication Circuit Malfunction After ignition “ON”, abnormal signal is fed from SDM to BCM. |
•Between SDM and BCM circuit / connector
•SDM •BCM |
Circuit Diagram
| [A]: | SDM connector (View: [a]) | A1: | Air bag communication signal circuit | 2. | BCM |
| [B]: | BCM connector (View: [b]) | 1. | SDM |
DTC Confirmation Procedure
1)Set ignition “ON”.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Air bag communication signal circuit check
1)Check that ignition is “OFF”.
2)Disconnect “L04” and “E05” connectors.
3)Check for proper terminal connection to “L04” and “E05” connectors.
4)If connections are OK, check the following points.
•Resistance of “A1” circuit: less than 1 Ω
•Resistance between “A1” circuit and ground: infinity •Resistance between “A1” circuit terminal and other terminal at “L04” connector: infinity •Voltage of “A1” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 2.
|
Repair or replace defective wire harness.
|
| 2 |
BCM check
1)Check that ignition is “OFF”.
2)Connect “E05” connector to BCM.
3)Set ignition “ON”.
4)Check that voltage between “A1” and ground is battery voltage.
Is check result OK?
|
Replace SDM and recheck DTC.
|
Replace BCM and recheck DTC.
|