DESCRIPTION Refer to the description for DTC P310711.
Click here  |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Warning Indicate | |
P310764 | Lost Communication with Airbag System Control Module Signal Plausibility Failure |
Abnormal communication signal: Communication from the airbag ECU assembly stopped and signal plausibility failure has been detected for a certain period.
(1 trip detection logic) |
- Wire harness or connector
- Airbag ECU assembly
- Hybrid vehicle control ECU
| Does not come on |
Master Warning Light: Comes on | Related Data List |
DTC No. | Data List | |
P310764 | Airbag Status (Collision) | CONFIRMATION DRIVING PATTERN
HINT: After
repair has been completed, clear the DTCs and then check that the
vehicle has returned to normal by performing the following All Readiness
check procedure. Click here
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 2 minutes or more.
- Turn the power switch on (IG) and turn the Techstream on.
- With power switch on (IG) and wait for 2 minutes or more.
- Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
- Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.
WIRING DIAGRAM Refer to the wiring diagram for DTC P310711.
Click here PROCEDURE
| 1. |
CHECK DTC OUTPUT (SRS AIRBAG) | (a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG). (c) Enter the following menus: Body Electrical / SRS Airbag / Trouble Codes.
(d) Check for DTCs. Body Electrical > SRS Airbag > Trouble Codes
| Result |
Proceed to | | Airbag system DTCs are not output. |
A | | Airbag system DTCs are output. |
B | (e) Turn the power switch off.
| B |
 | GO TO DTC CHART (AIRBAG SYSTEM (for HV Model)) |
|
A |
 | |
Click here
|
NEXT | |
| |
| 3. |
CHECK DTC OUTPUT (HYBRID CONTROL) | (a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG). (c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Check for DTCs. Powertrain > Hybrid Control > Trouble Codes
| Result |
Proceed to | | P310764 is not output. |
A | | P310764 is output again. |
B | (e) Turn the power switch off.
| B |
| GO TO STEP 5 |
|
A | |
| |
| 4. |
CHECK FOR INTERMITTENT PROBLEMS | Click here
| OK | |
REPLACE AIR BAG ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA |
| 5. |
CHECK AIR BAG ECU ASSEMBLY (CHECK WAVEFORM) |
Click here
| Result |
Proceed to | | The waveform appears as shown in the illustration. |
A | | The waveform differs from the one shown in the illustration. |
B |
| A |
| REPLACE HYBRID VEHICLE CONTROL ECU |
|
B | |
| |
| 6. |
CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) |
Click here
| NG |
| CONNECT SECURELY |
|
OK | |
| |
| 7. |
CHECK CONNECTOR CONNECTION CONDITION (AIRBAG ECU ASSEMBLY CONNECTOR) |
Click here
| NG |
| CONNECT SECURELY |
|
OK | |
| |
| 8. |
CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - AIRBAG ECU ASSEMBLY) |
Click here
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 9. |
CHECK HARNESS AND CONNECTOR (AIRBAG ECU ASSEMBLY - BODY GROUND) |
Click here
| OK |
| REPLACE AIR BAG ECU ASSEMBLY |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR | | 
