|
If an impact of set value or more is detected, the side impact sensor (rear) sends the coded acceleration data to SRS-ECU via side impact sensor (front). Based on the acceleration data, SRS-ECU determines the necessity of curtain air bag deployment, and then turns ON the power supply circuit to the inflator.
|
|
The code is set if the communication with the right side impact sensor (rear) and right side impact sensor (front), or with SRS-ECU is abnormal.
|
|
- Malfunction of right side impact sensor (rear)
- Damaged wiring harness and connectors
- Malfunction of SRS-ECU
|
|
Use M.U.T.-III to diagnose the CAN bus lines.
|
|
Q.
Is the check result normal?
|
|
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).
|
|
|
|
(1)Connect the negative battery terminal.
|
|
(2)After erasing the diagnosis code memory, check the diagnosis code again.
|
|
(3)Disconnect the negative battery terminal.
|
|
Q.
Is the diagnosis code No. U0176 set?
|
|
Intermittent malfunction (Refer to GROUP 00 -How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
|
|
|
|
(1)Check that the negative battery terminal is disconnected. If the negative battery terminal is connected, disconnect it.
|
|
(2)Alternate the right side impact sensor (rear) and left side impact sensor (rear), and then install the alternated sensors.
|
|
(3)Connect the negative battery terminal.
|
|
(4)After erasing the diagnosis code memory, check the diagnosis code again.
|
|
(5)Disconnect the negative battery terminal.
|
|
Q.
Is the diagnosis code No. U0173 set?
|
|
Replace the right side impact sensor (rear) (Refer to ).
|
|
|
|
- Open circuit check for power supply wires of side impact sensor front and rear
|
|
Q.
Is the check result normal?
|
|
Repair the wiring harness.
|
|
|
|
- Open circuit check for the SRS-ECU power supply wire
|
|
Q.
Is the check result normal?
|
|
Repair the wiring harness.
|
|
|
|
Q.
Is the diagnosis code No. U0176 set?
|
|
Replace SRS-ECU (Refer to ).
|
|
|
|
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
|
|
|