Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001N35S
Model Year Start: 2021 Model: Corolla Prod Date Range: [04/2020 - 09/2022]
Title: HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY with P610): HOW TO PROCEED WITH TROUBLESHOOTING; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

  • *: Use the Techstream
  • Use the following procedure to troubleshoot the hybrid battery system.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP
NEXT

2.

CUSTOMER PROBLEM ANALYSIS
NEXT

3.

CONNECT TECHSTREAM TO THE DLC3*

HINT:

If the display on the tester indicates a communication error, inspect the DLC3.

NEXT

4.

CHECK DTC AND FREEZE FRAME DATA*

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

HINT:

  • Make sure to save freeze frame data because the data is necessary for performing simulation tests.
  • For the hybrid control system, there are many DTCs, many of which can be stored due to a single malfunction. As a result, in some of the diagnosis procedures an instruction is provided to check for other DTCs and their corresponding INF codes. By following the diagnosis path based on the combination of output DTCs and INF codes, it is possible to narrow down the problem early and avoid unnecessary diagnosis.
NEXT

5.

CLEAR DTC AND FREEZE FRAME DATA*

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

NEXT

6.

CONDUCT VISUAL INSPECTION
NEXT

7.

CONFIRM PROBLEM SYMPTOMS

HINT:

If the engine does not start, perform steps 9 and 11 first.

Malfunction occurs.

GO TO STEP 10

Malfunction does not occur.

8.

DUPLICATE CONDITIONS THAT PRODUCE SYMPTOMS
NEXT

9.

CHECK FOR DTCS*

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

DTCs are not output.

GO TO STEP 16

DTCs are output.

10.

REFER TO DTC CHART

HINT:

DTCs for the hybrid control system and hybrid battery system are displayed using the same menus on the Techstream. It is necessary to check the DTC charts for hybrid control system and hybrid battery system.

  • Hybrid Control System - DTC chart

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

  • Hybrid Battery System - DTC chart

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

NEXT

11.

CONDUCT CIRCUIT INSPECTION
Malfunction confirmed.

GO TO STEP 13

Malfunction not confirmed.

12.

CHECK FOR INTERMITTENT PROBLEMS

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

NEXT

13.

IDENTIFY PROBLEM
NEXT

14.

ADJUST AND/OR REPAIR
NEXT

15.

CONDUCT CONFIRMATION TEST
NEXT

END

16.

CONDUCT BASIC INSPECTION
Malfunctioning parts confirmed.

GO TO STEP 18

Malfunctioning parts not confirmed.

17.

CHECK ECU POWER SOURCE CIRCUIT
NEXT

GO TO STEP 11

18.

CONDUCT PARTS INSPECTION
NEXT

GO TO STEP 13