HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for AWD with NICKEL METAL HYDRIDE BATTERY): PROBLEM SYMPTOMS TABLE; 2019 - 2025 MY RAV4 HV [02/2019

PROBLEM SYMPTOMS TABLE

Hybrid Control System

Symptom

Suspected Area

Link

Cannot enter EV drive mode

CAN communication system

Pattern select switch EV mode circuit

EV mode switch (Integration control and panel assembly)

Combination meter assembly

EV mode indicator light does not illuminate

Combination meter assembly

EV mode switch (Integration control and panel assembly)

Pattern select switch EV mode circuit

EV mode indicator light does not turn off

Combination meter assembly

EV mode switch (Integration control and panel assembly)

Pattern select switch EV mode circuit

Cannot enter ECO mode

CAN communication system

ECO mode switch (Integration control and panel assembly)

Pattern select switch ECO mode circuit

Combination meter assembly

ECO mode indicator light does not illuminate

ECO mode switch (Integration control and panel assembly)

Pattern select switch ECO mode circuit

Combination meter assembly

ECO mode indicator light does not turn off

ECO mode switch (Integration control and panel assembly)

Pattern select switch ECO mode circuit

Combination meter assembly

Cannot enter SPORT mode

CAN communication system

SPORT mode switch (Integration control and panel assembly)

Pattern select switch SPORT mode circuit

Combination meter assembly

SPORT mode indicator light does not illuminate

SPORT mode switch (Integration control and panel assembly)

Pattern select switch SPORT mode circuit

Combination meter assembly

SPORT mode indicator light does not turn off

SPORT mode switch (Integration control and panel assembly)

Pattern select switch SPORT mode circuit

Combination meter assembly

Cannot enter TRAIL mode

CAN communication system

TRAIL mode switch (Integration control and panel assembly)

TRAIL switch circuit

Combination meter assembly

TRAIL indicator does not illuminate

TRAIL mode switch (Integration control and panel assembly)

TRAIL switch circuit

Combination meter assembly

TRAIL indicator does not turn off

TRAIL mode switch (Integration control and panel assembly)

TRAIL switch circuit

Combination meter assembly

Hunting (Poor idle)

Check for Diagnosis Related Information*5

Drive Start Control

Hesitation and/or poor acceleration

Check for Diagnosis Related Information*5

Brake override system

Drive Start Control

Shift range position cannot be changed by shifting to "+" or "-"

Transmission control switch circuit

Shift position indicator is malfunctioning

Indicator circuit

Ignition switch does not turn ON (READY)*1

Check vehicle control history (wrong assembly confirmation)*3

Ignition or starter switch assembly

ECU power source circuit (Hybrid control system)

Hybrid vehicle control ECU assembly

ECM

Power switch does not turn on (READY)*2

Check vehicle control history (wrong assembly confirmation)*3

Smart key system (for start function)

ECU power source circuit (Hybrid control system)

Hybrid vehicle control ECU assembly

ECM

Loud rattle from hybrid vehicle transaxle

Check idle learning

Transmission input damper assembly

Hybrid vehicle transaxle assembly

Engine misfire

"Maintenance Required for Traction Battery Cooling Parts See Owner's Manual" is displayed on the multi-information display.*4

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.

4. Clear the DTCs to reset the learning values even if no DTCs are stored.

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.

4. Clear the DTCs to reset the learning values even if no DTCs are stored.

Engine stops and starts less frequently.

Check vehicle control history

(Limit to Charge / Discharge Control Value by Hybrid Battery Temperature High)

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)

*1: w/o Smart Key System

*2: w/ Smart Key System

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

Using the Techstream, check the vehicle control history.
Click here

HINT:

If "Hybrid Battery Pack Sensor Module Mismatch" is displayed, the wrong type of battery voltage sensor is installed.
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 ignition switch cannot be turned to ON (READY).
After installing the battery voltage sensor, perform the following to check that the ignition switch can be turned to ON (READY).
1. Turn the ignition switch to ON (READY).
2. Turn the ignition switch off and wait for 2 minutes or more.
3. Turn the ignition switch to ON (READY) again.

*4: If the battery cooling blower assembly malfunctions, DTC P0A8100, P0A8111, P0A8115, P0A814B, P0A8196 or P0A8198 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.

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

Result

Link

Hybrid control system

P312387

Motor generator control system

P31241F

P312487