Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001N30M
Model Year Start: 2021 Model: Corolla Prod Date Range: [04/2020 - 09/2022]
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): P310764; Lost Communication with Airbag System Control Module Signal Plausibility Failure; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]

DTC

P310764

Lost Communication with Airbag System Control Module Signal Plausibility Failure

DESCRIPTION

Refer to the description for DTC P310711.

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): P310711; Lost Communication with Airbag System Control Module Circuit Short to Ground+

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 sensor assembly stopped and signal plausibility failure has been detected for a certain period.

(1 trip detection logic)
  • Wire harness or connector
  • Airbag sensor assembly
  • Hybrid vehicle control ECU

Does not come on

Master Warning: Comes on

Related Data List

DTC No.

Data List

P310764

Airbag Status (Collision)

CONFIRMATION DRIVING PATTERN

HINT:

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

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): UTILITY

  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG) and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the power switch off and wait for 2 minutes or more.
  5. Turn the power switch on (IG) and turn the Techstream on.
  6. With power switch on (IG) 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

Refer to the wiring diagram for DTC P310711.

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): P310711; Lost Communication with Airbag System Control Module Circuit Short to Ground+

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

DTCs are not output

A

DTCs are output

B

(e) Turn the power switch off.

B

GO TO DTC CHART (AIRBAG SYSTEM) 2021 MY Corolla Corolla HV [04/2020 - 06/2021]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for HV Model): DIAGNOSTIC TROUBLE CODE CHART 2022 MY Corolla Corolla HV [06/2021 - 09/2022]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for HV Model): DIAGNOSTIC TROUBLE CODE CHART

A

2.

CLEAR DTC

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): P06881F; ECM/PCM Power Relay Sense Circuit Intermittent+

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 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): CHECK FOR INTERMITTENT PROBLEMS

OK

REPLACE AIRBAG SENSOR ASSEMBLY

NG

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

5.

CHECK AIRBAG SENSOR ASSEMBLY (CHECK WAVEFORM)

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): P310711; Lost Communication with Airbag System Control Module Circuit Short to Ground+

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 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): P056014; System Voltage (BATT) Circuit Short to Ground or Open+

NG

CONNECT SECURELY
OK

7.

CHECK CONNECTOR CONNECTION CONDITION (AIRBAG SENSOR ASSEMBLY CONNECTOR)

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): P310715; Lost Communication with Airbag System Control Module Circuit Short to Auxiliary Battery or Open+

NG

CONNECT SECURELY
OK

8.

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

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): P310715; Lost Communication with Airbag System Control Module Circuit Short to Auxiliary Battery or Open+

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

9.

CHECK HARNESS AND CONNECTOR (AIRBAG SENSOR ASSEMBLY - BODY GROUND)

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): P310715; Lost Communication with Airbag System Control Module Circuit Short to Auxiliary Battery or Open+

OK

REPLACE AIRBAG SENSOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR