| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001H3ME |
| Model Year Start: 2019 | Model: RAV4 HV | Prod Date Range: [02/2019 - ] |
| Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for AWD with NICKEL METAL HYDRIDE BATTERY): P0AA749; Hybrid/EV Battery Voltage Isolation Sensor Circuit Internal Electronic Failure; 2019 - 2024 MY RAV4 HV [02/2019 - ] | ||
|
DTC |
P0AA749 |
Hybrid/EV Battery Voltage Isolation Sensor Circuit Internal Electronic Failure |
DESCRIPTION
The hybrid vehicle control ECU assembly monitors the insulation monitoring circuit located in the battery voltage sensor and detects malfunctions.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
|---|---|---|---|---|---|
|
P0AA749 |
Hybrid/EV Battery Voltage Isolation Sensor Circuit Internal Electronic Failure |
Malfunction in the insulation monitoring circuit in the battery voltage sensor (1 trip detection logic) |
Battery voltage sensor |
Does not come on |
Master Warning: Comes on |
Related Data List
|
DTC No. |
Data List |
|---|---|
|
P0AA749 |
Short Wave Highest Value Level |
CONFIRMATION DRIVING PATTERN
HINT:
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
![2019 - 2024 MY RAV4 HV [02/2019 - ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for AWD with NICKEL METAL HYDRIDE BATTERY): UTILITY](/t3Portal/stylegraphics/info.gif)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON and turn the Techstream on.
- With ignition switch ON and wait for 70 seconds or more.
- Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
-
Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE, perform driving pattern again.
PROCEDURE
|
1. |
CLEAR DTC |
Click here
|
|
2. |
SIMULATION TEST |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON and wait for 70 seconds or more.
NOTICE:
Do not turn the ignition switch off until step 3 is complete.
(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Check if DTCs are output.
Powertrain > Hybrid Control > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
P0AA749 is not output. |
A |
|
P0AA749 is output. |
B |
| B |
|
REPLACE BATTERY VOLTAGE SENSOR
|
|
|
3. |
SIMULATION TEST |
NOTICE:
Do not turn the ignition switch off while performing this inspection.
(a) With the vehicle and engine stopped, turn the ignition switch to ON (READY) with shift lever in P and wait for 70 seconds or more. (If the engine starts, wait until the engine stops.)
(b) While depressing the brake pedal without depressing the accelerator pedal, move the shift lever to D and wait for 1 minute. (Step A)
(c) Drive the vehicle 0.5 m (1.6 ft.) forward and perform step A.
(d) Drive the vehicle another 0.5 m (1.6 ft.) forward and perform step A. Repeat this procedure 5 times (minimum total driving distance: 2 m (6.6 ft.)).
(e) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(f) Check if DTCs are output.
Powertrain > Hybrid Control > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
P0AA649 is not output. |
A |
|
P0AA649 is output. |
B |
| A |
|
REPLACE BATTERY VOLTAGE SENSOR
|
| B |
|
GO TO DTC CHART (P0AA649)
|
|
|