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Home >> Toyota >> 2019 >> RAV4 LE, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Hybrid Control System (2WD, W/ Nickel Metal Hydride Battery) - Diagnostics - Introduction (1 Of 2)) >> HYBRID CONTROL SYSTEM (for 2WD with NICKEL METAL HYDRIDE BATTERY) >> Problem Symptoms Table [11/2018 - 08/2020] >> Problem Symptoms Table [11/2018 - 08/2020]

Problem Symptoms Table [11/2018 - 08/2020]

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 [11/2018 - 02/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2019 - ]
Pattern select switch EV mode circuit Refer to Pattern Select Switch EV Mode Circuit [11/2018 - 08/2020]
EV mode switch (Integration control and panel assembly) Refer to INSPECTION [11/2018 - ]
Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]
EV mode indicator light does not illuminate Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]
EV mode switch (Integration control and panel assembly) Refer to INSPECTION [11/2018 - ]
Pattern select switch EV mode circuit Refer to Pattern Select Switch EV Mode Circuit [11/2018 - 08/2020]
EV mode indicator light does not turn off Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]
EV mode switch (Integration control and panel assembly) Refer to INSPECTION [11/2018 - ]
Pattern select switch EV mode circuit Refer to Pattern Select Switch EV Mode Circuit [11/2018 - 08/2020]
Cannot enter ECO mode CAN communication system Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 02/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2019 - ]
ECO mode switch (Integration control and panel assembly) Refer to INSPECTION [11/2018 - 02/2019] , or refer to INSPECTION [02/2019 - 08/2020]
Pattern select switch ECO mode circuit Refer to Pattern Select Switch Eco Mode Circuit [11/2018 - 08/2020]
Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]
ECO mode indicator light does not illuminate ECO mode switch (Integration control and panel assembly) Refer to INSPECTION [11/2018 - 02/2019] , or refer to INSPECTION [02/2019 - 08/2020]
Pattern select switch ECO mode circuit Refer to Pattern Select Switch Eco Mode Circuit [11/2018 - 08/2020]
Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]
ECO mode indicator light does not turn off ECO mode switch (Integration control and panel assembly) Refer to INSPECTION [11/2018 - 02/2019] , or refer to INSPECTION [02/2019 - 08/2020]
Pattern select switch ECO mode circuit Refer to Pattern Select Switch Eco Mode Circuit [11/2018 - 08/2020]
Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]
Cannot enter SPORT mode CAN communication system Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 02/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2019 - ]
SPORT mode switch (Integration control and panel assembly) Refer to INSPECTION [11/2018 - ]
Pattern select switch SPORT mode circuit Refer to Pattern Select Switch Sport Mode Circuit [11/2018 - 08/2020]
Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]
SPORT mode indicator light does not illuminate SPORT mode switch (Integration control and panel assembly) Refer to INSPECTION [11/2018 - ]
Pattern select switch SPORT mode circuit Refer to Pattern Select Switch Sport Mode Circuit [11/2018 - 08/2020]
Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]
SPORT mode indicator light does not turn off SPORT mode switch (Integration control and panel assembly) Refer to INSPECTION [11/2018 - ]
Pattern select switch SPORT mode circuit Refer to Pattern Select Switch Sport Mode Circuit [11/2018 - 08/2020]
Combination meter assembly Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]
Hunting (Poor idle) Check for Diagnosis Related Information*3 Refer to UTILITY [11/2018 - 08/2020] 
Refer to UTILITY [11/2018 - 08/2020]
Drive Start Control Refer to Drive Start Control [11/2018 - 08/2020]
Hesitation and/or poor acceleration Check for Diagnosis Related Information*3 Refer to UTILITY [11/2018 - 08/2020] 
Refer to UTILITY [11/2018 - 08/2020]
Brake override system Refer to Brake Override System [11/2018 - 08/2020]
Drive Start Control Refer to Drive Start Control [11/2018 - 08/2020]
Shift range position cannot be changed by shifting to "+" or "-" Transmission control switch circuit Refer to Transmission Control Switch Circuit [11/2018 - 08/2020]
Shift paddle switch circuit Refer to Shift Paddle Switch Circuit [11/2018 - 08/2020]
Shift position indicator is malfunctioning Indicator circuit Refer to Indicator Circuit [11/2018 - 08/2020]
Power switch does not turn on (READY). Check vehicle control history (wrong assembly confirmation)*1 Refer to REMOVAL [11/2018 - 02/2019] , or refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020]
Smart entry and start system (for start function) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 02/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2019 - 12/2021]
ECU power source circuit (Hybrid control system) Refer to ECU Power Source Circuit [11/2018 - 08/2020]
Hybrid vehicle control ECU assembly Refer to REMOVAL [11/2018 - 02/2019] , or refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020]
ECM Refer to REMOVAL [11/2018 - 02/2019] , or refer to REMOVAL [02/2019 - 08/2020]
Loud rattle from hybrid vehicle transaxle Check idle learning Refer to INITIALIZATION [11/2018 - 08/2020]
Transmission input damper assembly Refer to REMOVAL [11/2018 - 02/2019] , or refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020]
Hybrid vehicle transaxle assembly Refer to REMOVAL [11/2018 - 02/2019] , or refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 06/2020] , or refer to REMOVAL [06/2020 - 08/2020]
Engine misfire -
"Maintenance Required for Traction Battery Cooling Parts See Owner's Manual" is displayed on the multi-information display. *2 1. Make sure the HV battery cooling system intake port is not blocked. -
2. Make sure there are no gaps between the connecting parts of the ducts. -
3. Clean the No. 1 hybrid battery intake filter.
Check for entry of foreign matter.		 Refer to INSPECTION [11/2018 - ]
4. Clear the DTCs to reset the learning values even if no DTCs are stored. Refer to DTC CHECK / CLEAR [11/2018 - 08/2020] 
Abnormal sound is heard from the area around the No. 1 hybrid battery intake duct. 1. Make sure the HV battery cooling system intake port is not blocked. -
2. Make sure there are no gaps between the connecting parts of the ducts. -
3. Clean the No. 1 hybrid battery intake filter.
Check for entry of foreign matter.		 Refer to INSPECTION [11/2018 - ]
4. Clear the DTCs to reset the learning values even if no DTCs are stored. Refer to DTC CHECK / CLEAR [11/2018 - 08/2020] 
Engine stops and starts less frequently. Check vehicle control history
(Limit to Charge / Discharge Control Value by Hybrid Battery Temperature High)		 Refer to VEHICLE CONTROL HISTORY [11/2018 - 08/2020]
Engine speed returns to idle slowly after accelerator pedal is fully released. Check vehicle control history
(Limit to Charge / Discharge Control Value by Hybrid Battery Temperature High)		 Refer to VEHICLE CONTROL HISTORY [11/2018 - 08/2020]

*1: Check vehicle control history (wrong assembly confirmation)

  1. Using the Techstream, check the vehicle control history.

    Refer to VEHICLE CONTROL HISTORY [11/2018 - 08/2020]

    HINT: 

    If "Hybrid Battery Pack Sensor Module Mismatch" is displayed, the wrong type of battery voltage sensor is installed.

  2. If the battery voltage sensor had been replaced just before the malfunction occurred, check the part number of the battery voltage sensor.

    HINT: 

    • The type of battery voltage sensor to be used varies depending on the vehicle model.
    • If the wrong type of battery voltage sensor is installed, the power switch cannot be turned on (READY).
  3. After installing the battery voltage sensor, perform the following to check that the power switch can be turned on (READY).
    1. Turn the power switch on (READY).
    2. Turn the power switch off and wait for 2 minutes or more.
    3. Turn the power switch on (READY) again.

*2: If the battery cooling blower assembly malfunctions, DTC P0A81-00, P0A81-11, P0A81-15, P0A81-4B, P0A81-96 or P0A81-98 will be stored. If only "Maintenance Required for Traction Battery Cooling Parts See Owner's Manual" is displayed on the multi-information display, only perform the inspection of the HV battery cooling system intake port, filter and duct.

*3: 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 [11/2018 - 08/2020]
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 [11/2018 - 08/2020]
P3124-87
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