DESCRIPTION The hybrid
vehicle control ECU detects a problem in the collision signal line from
the airbag ECU assembly and alerts the driver. |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Warning Indicate | |
P310711 | Lost Communication with Airbag System Control Module Circuit Short to Ground |
Short to ground in the communication circuit: Communication from the airbag ECU assembly stopped and Circuit Low 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 | |
P310711 | 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
 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 |
 | |
| 2. |
CHECK AIR BAG ECU ASSEMBLY (CHECK WAVEFORM) |
(a) Connect an oscilloscope between the hybrid vehicle control ECU terminals specified in the table below.
(b) Turn the power switch on (READY).
| (c) Measure the waveform. |
Item | Contents | |
Terminal | G47-14 (ABFS) - G46-6 (E1) | |
Equipment Setting |
5 V/DIV., 150 ms./DIV. | |
Condition | Power switch on (READY) |
| Result |
Proceed to | | The waveform appears as shown in the illustration. |
A | | The waveform differs from the one shown in the illustration. |
B | |
 |
|
*a | Component with harness connected (Hybrid Vehicle Control ECU) | | |
(d) Turn the power switch off.
| B | |
GO TO STEP 6 |
|
A | |
| |
Click here
|
NEXT | |
| |
| 4. |
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 | | P310711 is not output. |
A | | P310711 is output. |
B | (e) Turn the power switch off.
| B |
| REPLACE HYBRID VEHICLE CONTROL ECU |
|
A | |
| |
| 5. |
CHECK FOR INTERMITTENT PROBLEMS | Click here
| OK | |
REPLACE HYBRID VEHICLE CONTROL ECU |
| NG |
| REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA |
| 6. |
CHECK AIR BAG ECU ASSEMBLY | (a) Disconnect the G50 airbag ECU assembly connector.
| (b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G50-24 (GSW2) - G50-33 (E1) |
Power switch off |
10 kΩ or higher | |
 |
|
*a | Component without harness connected
(Airbag ECU Assembly) | | |
(c) Reconnect the G50 airbag ECU assembly connector.
| NG |
| REPLACE AIR BAG ECU ASSEMBLY |
|
OK | |
| |
| 7. |
CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - AIRBAG ECU ASSEMBLY) |
(a) Disconnect the G47 hybrid vehicle control ECU connector. (b) Disconnect the G50 airbag ECU assembly connector.
| (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G47-14 (ABFS) or G50-24 (GSW2) - Body ground and other terminals |
Power switch off |
10 kΩ or higher | |
 |
|
*a | Rear view of wire harness connector
(to Hybrid Vehicle Control ECU) | |
*b | Front view of wire harness connector
(to Airbag ECU Assembly) | | |
(d) Reconnect the G50 airbag ECU assembly connector. (e) Reconnect the G47 hybrid vehicle control ECU connector.
| OK |
| REPLACE HYBRID VEHICLE CONTROL ECU |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR | | 
