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

HYBRID / BATTERY CONTROL  HYBRID CONTROL SYSTEM  P310764  Lost Communication with Airbag System Control Module Signal Plausibility Failure  


DESCRIPTION

Refer to the description for DTC P310711.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>P310711

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Note
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:
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.




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.CLEAR DTC

B

GO TO DTC CHART (AIRBAG SYSTEM)

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


3.CHECK DTC OUTPUT (HYBRID CONTROL)
a.

Check for DTCs.

Powertrain > Hybrid Control > Trouble Codes
50001 397
Result:
Result Proceed to
P310764 is not output A
P310764 is output again B




A

4.CHECK FOR INTERMITTENT PROBLEMS

B

5.CHECK AIRBAG ECU ASSEMBLY (CHECK WAVEFORM)
5.CHECK AIRBAG ECU ASSEMBLY (CHECK WAVEFORM)

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>P310711

Result:
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

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


B

6.CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)
6.CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>P056014

Result:
Proceed to
OK
NG



OK

7.CHECK CONNECTOR CONNECTION CONDITION (AIRBAG ECU ASSEMBLY CONNECTOR)

NG

CONNECT SECURELY

7.CHECK CONNECTOR CONNECTION CONDITION (AIRBAG ECU ASSEMBLY CONNECTOR)

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>P310715

Result:
Proceed to
OK
NG



OK

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

NG

CONNECT SECURELY

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

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>P310715

Result:
Proceed to
OK
NG



OK

9.CHECK HARNESS AND CONNECTOR (AIRBAG ECU ASSEMBLY - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.CHECK HARNESS AND CONNECTOR (AIRBAG ECU ASSEMBLY - BODY GROUND)

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>P310715

Result:
Proceed to
OK
NG



OK

REPLACE AIRBAG ECU ASSEMBLY

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR