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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 49 (Hybrid Control System (Li-Ion W/ P610) - Diagnostics - Introduction) >> HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with P610) >> Problem Symptoms Table [04/2020 - 09/2022] >> Problem Symptoms Table [04/2020 - 09/2022]

Problem Symptoms Table [04/2020 - 09/2022]

WARNING: This page is about a different variant/trim than selected.
HYBRID CONTROL SYSTEM

Symptom Suspected Area Link
Cannot enter EV drive mode CAN Communication System Refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2019 - 09/2022]
Pattern Select Switch EV Mode Circuit Refer to Pattern Select Switch EV Mode Circuit [04/2020 - 09/2022]
EV drive mode switch (Combination switch assembly) Refer to INSPECTION [01/2019 - ]
Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2019 - 09/2022]
EV mode indicator light does not illuminate Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2019 - 09/2022]
EV drive mode switch (Combination switch assembly) Refer to INSPECTION [01/2019 - ]
Pattern Select Switch EV Mode Circuit Refer to Pattern Select Switch EV Mode Circuit [04/2020 - 09/2022]
EV mode indicator light does not turn off Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2019 - 09/2022]
EV drive mode switch (Combination switch assembly) Refer to INSPECTION [01/2019 - ]
Pattern Select Switch EV Mode Circuit Refer to INSPECTION [01/2019 - ]
Cannot enter SPORT/ECO mode CAN Communication System Refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2019 - 09/2022]
Drive mode select switch (Combination switch assembly) Refer to INSPECTION [01/2019 - ]
Drive Mode Select Switch Circuit Refer to Drive Mode Select Switch Circuit [04/2020 - 09/2022]
Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2019 - 09/2022]
SPORT/ECO mode indicator light does not illuminate Drive mode select switch (Combination switch assembly) Refer to INSPECTION [01/2019 - ]
Drive Mode Select Switch Circuit Refer to Drive Mode Select Switch Circuit [04/2020 - 09/2022]
Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2019 - 09/2022]
SPORT/ECO mode indicator light does not turn off Drive mode select switch (Combination switch assembly) Refer to INSPECTION [01/2019 - ]
Drive Mode Select Switch Circuit Refer to Drive Mode Select Switch Circuit [04/2020 - 09/2022]
Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2019 - 09/2022]
Hunting (Poor idle) Check for Diagnosis Related Information*1 Refer to UTILITY [04/2020 - 09/2022] 
Refer to UTILITY [04/2020 - 09/2022]
Drive Start Control Refer to Drive Start Control [04/2020 - 09/2022]
Hesitation and/or poor acceleration Check for Diagnosis Related Information*1 Refer to UTILITY [04/2020 - 09/2022] 
Refer to UTILITY [04/2020 - 09/2022]
Brake Override System Refer to Brake Override System [04/2020 - 09/2022]
Drive Start Control Refer to Drive Start Control [04/2020 - 09/2022]
Shift position indicator is malfunctioning Indicator Circuit Refer to Indicator Circuit [04/2020 - 09/2022]
Power switch does not turn on (READY). Smart Key System (for start function) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [01/2019 - 09/2022]
ECU Power Source Circuit (Hybrid control system) Refer to ECU Power Source Circuit [04/2020 - 09/2022]
Hybrid vehicle control ECU Refer to REMOVAL [04/2020 - 09/2022]
ECM Refer to REMOVAL [04/2020 - 09/2022]
Loud rattle from hybrid vehicle transaxle Check Idle Learning Refer to INITIALIZATION [01/2019 - 09/2022]
Transmission input damper assembly Refer to REMOVAL [04/2020 - 09/2022]
Hybrid vehicle transaxle assembly Refer to REMOVAL [04/2020 - 09/2022]
Engine misfire -

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

RESULT

Result Link
Hybrid control system P3123-87 Refer to DTC P3123-87: Lost Communication with Drive Motor Control Module "A" from Hybrid/EV Control Module Missing Message [04/2020 - 09/2022]
Motor generator control system P3124-1F Refer to DTC P3124-1F: Lost Communication between Drive Motor "A" and HV ECU Circuit Intermittent; DTC P3124-87: Lost Communication between Drive Motor "A" and HV ECU Missing Message [04/2020 - 09/2022]
P3124-87