Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001N403
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): P310711; Lost Communication with Airbag System Control Module Circuit Short to Ground; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]

DTC

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 sensor 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 sensor assembly stopped and Circuit Low 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

P310711

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

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.

CHECK AIRBAG SENSOR 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.

*a

Component with harness connected

(Hybrid Vehicle Control ECU)

-

-

Item

Contents

Terminal

I3-29 (ABFS) - I3-3 (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

(d) Turn the power switch off.

B

GO TO STEP 6

A

3.

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

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 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 HYBRID VEHICLE CONTROL ECU

NG

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

6.

CHECK AIRBAG SENSOR ASSEMBLY

(a) Disconnect the I47 airbag sensor assembly connector.

(b) 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)

Power switch off

10 kΩ or higher

*a

Component without harness connected

(Airbag Sensor Assembly)

(c) Reconnect the I47 airbag sensor assembly connector.

NG

REPLACE AIRBAG SENSOR ASSEMBLY

OK

7.

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

(a) Disconnect the I3 hybrid vehicle control ECU connector.

(b) Disconnect the I47 airbag sensor assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I3-29 (ABFS) or I47-24 (GSW2) - Body ground and other terminals

Power switch off

10 kΩ or higher

*a

Front view of wire harness connector

(to Hybrid Vehicle Control ECU)

*b

Front view of wire harness connector

(to Airbag Sensor Assembly)

(d) Reconnect the I47 airbag sensor assembly connector.

(e) Reconnect the I3 hybrid vehicle control ECU connector.

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR