Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026PW3 |
Model Year Start: 2023 |
Model: Corolla HV |
Prod Date Range: [09/2022 -
] |
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): P310711; Lost Communication with Airbag System Control Module Circuit Short to Ground; 2023 - 2025 MY Corolla HV [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 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 here
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON and turn the GTS on.
-
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
-
Turn the ignition switch off and wait for 2 minutes or more.
-
Turn the ignition switch to ON and turn the GTS on.
-
With ignition switch to ON 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) Check for DTCs.
Body Electrical > SRS Airbag > Trouble Codes
Result
|
Proceed to
|
DTCs are not output
|
A
|
DTCs are output
|
B
|
A
|
|
|
2.
|
CHECK AIRBAG ECU ASSEMBLY (CHECK WAVEFORM)
|
(a) Connect an oscilloscope between the hybrid vehicle control ECU terminals specified in the table below.
(b) Turn the ignition switch to ON (READY).
(c) Measure the waveform.
*a
|
Component with harness connected
(Hybrid Vehicle Control ECU)
|
-
|
-
|
Item
|
Contents
|
Terminal
|
I3-12 (ABFS) - I3-1 (E1)
|
Equipment Setting
|
5 V/DIV., 500 ms./DIV.
|
Condition
|
Ignition 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 ignition switch off.
A
|
|
|
Click here
NEXT
|
|
|
4.
|
CHECK DTC OUTPUT (HYBRID CONTROL)
|
(a) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes
Result
|
Proceed to
|
P310711 is not output
|
A
|
P310711 is output
|
B
|
A
|
|
|
5.
|
CHECK FOR INTERMITTENT PROBLEMS
|
Click here
NG |
|
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
|
6.
|
CHECK AIRBAG ECU ASSEMBLY
|
(a) Disconnect the airbag ECU 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)
|
Ignition switch off
|
10 kΩ or higher
|
|
|
*a
|
Component without harness connected
(Airbag ECU Assembly)
|
|
|
(c) Reconnect the airbag ECU assembly connector.
OK
|
|
|
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
|
I3-12 (ABFS) or I212-24 (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.
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|