Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001N31U
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): PROBLEM SYMPTOMS TABLE; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]

PROBLEM SYMPTOMS TABLE

Hybrid Control System

Symptom

Suspected Area

Link

Cannot enter EV drive mode

CAN Communication System

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

Pattern Select Switch EV Mode Circuit

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): Pattern Select Switch EV Mode Circuit

EV drive mode switch (Combination switch assembly)

2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; HYBRID / BATTERY CONTROL: COMBINATION SWITCH: INSPECTION

Combination meter assembly

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

EV mode indicator light does not illuminate

Combination meter assembly

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

EV drive mode switch (Combination switch assembly)

2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; HYBRID / BATTERY CONTROL: COMBINATION SWITCH: INSPECTION

Pattern Select Switch EV Mode Circuit

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): Pattern Select Switch EV Mode Circuit

EV mode indicator light does not turn off

Combination meter assembly

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

EV drive mode switch (Combination switch assembly)

2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; HYBRID / BATTERY CONTROL: COMBINATION SWITCH: INSPECTION

Pattern Select Switch EV Mode Circuit

2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; HYBRID / BATTERY CONTROL: COMBINATION SWITCH: INSPECTION

Cannot enter SPORT/ECO mode

CAN Communication System

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

Drive mode select switch (Combination switch assembly)

2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; HYBRID / BATTERY CONTROL: COMBINATION SWITCH: INSPECTION

Drive Mode Select Switch Circuit

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): Drive Mode Select Switch Circuit

Combination meter assembly

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

SPORT/ECO mode indicator light does not illuminate

Drive mode select switch (Combination switch assembly)

2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; HYBRID / BATTERY CONTROL: COMBINATION SWITCH: INSPECTION

Drive Mode Select Switch Circuit

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): Drive Mode Select Switch Circuit

Combination meter assembly

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

SPORT/ECO mode indicator light does not turn off

Drive mode select switch (Combination switch assembly)

2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; HYBRID / BATTERY CONTROL: COMBINATION SWITCH: INSPECTION

Drive Mode Select Switch Circuit

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): Drive Mode Select Switch Circuit

Combination meter assembly

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

Hunting (Poor idle)

Check for Diagnosis Related Information*1

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

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

Drive Start Control

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

Hesitation and/or poor acceleration

Check for Diagnosis Related Information*1

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

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

Brake Override System

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

Drive Start Control

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

Shift position indicator is malfunctioning

Indicator Circuit

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

Power switch does not turn on (READY).

Smart Key System (for start function)

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

ECU Power Source Circuit (Hybrid control system)

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): ECU Power Source Circuit

Hybrid vehicle control ECU

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID VEHICLE CONTROL ECU: REMOVAL

ECM

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): ECM: REMOVAL

Loud rattle from hybrid vehicle transaxle

Check Idle Learning

2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; 2ZR-FXE (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

Transmission input damper assembly

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; 2ZR-FXE (ENGINE MECHANICAL): REAR CRANKSHAFT OIL SEAL: REMOVAL

Hybrid vehicle transaxle assembly

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; P610 (HYBRID TRANSMISSION / TRANSAXLE): HYBRID VEHICLE TRANSAXLE: REMOVAL

Engine misfire

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*1: If any of the following Diagnosis Related Information items are output, perform troubleshooting for the corresponding DTCs.

Result

Result

Link

Hybrid control system

P312387

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): P312387; Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module Missing Message

Motor generator control system

P31241F

2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610): P31241F,P312487; Lost Communication between Drive Motor "A" and HV ECU Circuit Intermittent

P312487