RM38T0EC _51 Engine / Hybrid System _144957 HYBRID / BATTERY CONTROL _0604232 HYBRID CONTROL SYSTEM C

HYBRID / BATTERY CONTROL  HYBRID CONTROL SYSTEM  P310711  Lost Communication with Airbag System Control Module Circuit Short to Ground  


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 Note
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:
Comes on 		SAE Code:
P3107

CONFIRMATION DRIVING PATTERN

HINT:

After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>UTILITY


1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON and turn the GTS on.

3.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4.

Turn the ignition switch off and wait for 2 minutes or more.

5.

Turn the ignition switch to ON and turn the GTS on.

6.

With ignition switch to ON and wait for 2 minutes or more.

7.

Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.

8.

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

A409148E57
1.917,0.979 2.531,1.177 0.615,0.198 10 false GSW2 2.146,1.302 2.76,1.5 0.615,0.198 10 false E1 2.406,1.302 3.021,1.5 0.615,0.198 10 false 33 2.406,0.979 3.021,1.177 0.615,0.198 10 false 24 1.115,2.115 1.729,2.313 0.615,0.198 10 false I47 1.094,2.281 2.948,2.594 1.854,0.313 10 false Airbag ECU Assembly 4.625,1.01 5.24,1.208 0.615,0.198 10 false 12 4.906,1 5.521,1.198 0.615,0.198 10 false ABFS 4.625,2.094 5.25,2.292 0.625,0.198 10 false I278 5.833,1.563 6.448,1.76 0.615,0.198 10 false E1 4.615,2.25 6.667,2.552 2.052,0.302 10 false Hybrid Vehicle Control ECU 6.083,1.438 6.698,1.635 0.615,0.198 10 false 1 5.552,0.479 6.167,0.677 0.615,0.198 10 false +B

PROCEDURE

1.CHECK DTC OUTPUT (SRS AIRBAG)
a.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes
50001 444
Result:
Result Proceed to
DTCs are not output A
DTCs are output B




A

2.CHECK AIRBAG ECU ASSEMBLY (CHECK WAVEFORM)

B

GO TO DTC CHART (AIRBAG SYSTEM)

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM>DIAGNOSTIC TROUBLE CODE CHART


2.CHECK AIRBAG ECU ASSEMBLY (CHECK WAVEFORM)
a.

Connect an oscilloscope between the airbag ECU assembly terminals specified in the table below.


b.

Turn the ignition switch to ON (READY).


c.
A446779C11
1.292,0.313 1.667,0.552 0.375,0.24 1.094,2.073 1.427,1.427 true 2.094,2.052 1.438,1.292 true 0.146,0.104 0.458,0.302 0.313,0.198 10 false *a 1.99,2.125 2.604,2.323 0.615,0.198 10 false GSW2 1,2.146 1.365,2.406 0.365,0.26 10 false E1 1.396,0.344 1.833,0.625 0.438,0.281 10 false I47 2.927,3.427 3.406,3.625 0.479,0.198 10 false GND
*a Component with harness connected
(Airbag ECU Assembly)


Measure the waveform.

Item Contents
Terminal I47-24 (GSW2) - I47-33 (E1)
Equipment Setting 5 V/DIV., 500 ms./DIV.
Condition Ignition switch ON (READY)

Result:
Result Proceed to
The waveform appears as shown in the illustration. A
The waveform differs from the one shown in the illustration. B



d.

Turn the ignition switch off.



A

3.CLEAR DTC

B

6.CHECK AIRBAG ECU ASSEMBLY
4.CHECK DTC OUTPUT (HYBRID CONTROL)
a.

Check for DTCs.

Powertrain > Hybrid Control > Trouble Codes
50001 397
Result:
Result Proceed to
P310711 is not output A
P310711 is output B




A

5.CHECK FOR INTERMITTENT PROBLEMS

B

REPLACE HYBRID VEHICLE CONTROL ECU

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID VEHICLE CONTROL ECU>REMOVAL


6.CHECK AIRBAG ECU ASSEMBLY
a.

Disconnect the airbag ECU assembly connector.


b.
C371896C45
1.333,0.135 1.708,0.354 0.375,0.219 1,0.313 1.458,1.063 true 1.063,1.792 1.458,1.219 true 0.104,0.083 0.417,0.24 0.313,0.156 10 false *a 1.438,0.167 1.76,0.406 0.323,0.24 10 false I47 0.542,0.229 1.063,0.427 0.521,0.198 10 false GSW2 0.844,1.729 1.177,1.948 0.333,0.219 10 false E1
*a Component without harness connected
(Airbag ECU Assembly)


Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
I47-24 (GSW2) - I47-33 (E1) Ignition switch off 10 kΩ or higher



c.

Reconnect the airbag ECU assembly connector.


Result:
Proceed to
OK
NG



OK

7.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - AIRBAG ECU ASSEMBLY)

NG

REPLACE AIRBAG ECU ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CENTER AIRBAG SENSOR ASSEMBLY>REMOVAL


7.CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - AIRBAG ECU ASSEMBLY)
a.

Disconnect the hybrid vehicle control ECU connector.


b.

Disconnect the airbag ECU assembly connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
I278-12 (ABFS) or I47-24 (GSW2) - Body ground and other terminals Ignition switch off 10 kΩ or higher



d.

Reconnect the airbag ECU assembly connector.


e.

Reconnect the hybrid vehicle control ECU connector.


Result:
Proceed to
OK
NG



OK

REPLACE HYBRID VEHICLE CONTROL ECU

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID VEHICLE CONTROL ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR