| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001OBDV |
| Model Year Start: 2020 | Model: RAV4 HV | Prod Date Range: [06/2020 - ] |
| Title: HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY): P056014; System Voltage (BATT) Circuit Short to Ground or Open; 2020 - 2024 MY RAV4 HV [06/2020 - ] | ||
|
DTC |
P056014 |
System Voltage (BATT) Circuit Short to Ground or Open |
DESCRIPTION
Auxiliary battery power is supplied to the BATT terminal of the battery ECU assembly in order to store DTCs and freeze frame data. Even if the ignition switch is turned off, back-up power is supplied.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
|---|---|---|---|---|---|
|
P056014 |
System Voltage (BATT) Circuit Short to Ground or Open |
Malfunction in the battery ECU assembly back-up power source circuit (1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
MONITOR DESCRIPTION
If a period of time has elapsed with a low voltage at the AM terminal of the battery ECU assembly, the battery ECU assembly will determine that a malfunction has occurred in the back-up power supply system, and it will set a DTC. The MIL will illuminate the next time the engine is started.
MONITOR STRATEGY
|
Related DTCs |
P0562 (INF P056014): System voltage (battery energy control module) |
|
Required sensors/components |
Battery ECU assembly |
|
Frequency of operation |
Continuous |
|
Duration |
TMC's intellectual property |
|
MIL operation |
Immediately |
|
Sequence of operation |
None |
TYPICAL ENABLING CONDITIONS
|
The monitor will run whenever the following DTCs are not stored |
TMC's intellectual property |
|
Other conditions belong to TMC's intellectual property |
- |
TYPICAL MALFUNCTION THRESHOLDS
|
TMC's intellectual property |
- |
COMPONENT OPERATING RANGE
|
Battery ECU assembly |
DTC P0562 (INF P056014) is not detected |
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.
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![2020 - 2024 MY RAV4 HV [06/2020 - ]; HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM (for LITHIUM-ION BATTERY): UTILITY](/t3Portal/stylegraphics/info.gif)
-
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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- 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 5 seconds or more.[*1]
HINT:
[*1]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- Enter the following menus: Powertrain / HV Battery / 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 the normal judgment procedure again.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
-
Before the following operations are conducted, take precautions to prevent electric shock by turning the ignition switch off, wearing insulated gloves, and removing the service plug grip from HV battery.
- Inspecting the high-voltage system
- Disconnecting the low voltage connector of the inverter with converter assembly
- Disconnecting the low voltage connector of the HV battery
-
To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.
-
After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
-
After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
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HINT:
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
*a
Without waiting for 10 minutes
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
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PROCEDURE
|
1. |
CHECK FUSE (ECU-B NO. 2) |
|
(a) Remove the ECU-B NO. 2 fuse from the instrument panel junction block assembly. |
|
(b) Check if there is an open circuit in the ECU-B NO. 2 fuse in the instrument panel junction block assembly.
OK:
There is no open circuit in the ECU-B NO. 2 fuse.
(c) Install the ECU-B NO. 2 fuse.
| NG |
|
REPLACE FUSE (ECU-B NO. 2) |
|
|
2. |
CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY) |
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(a) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.
(b) Remove the No. 1 HV battery hose.
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|
(c) Check the connector connections and contact pressure of the relevant terminals for the battery ECU assembly. Click here
OK: The connectors are connected securely and there are no contact pressure problems. |
|
(d) Install the No. 1 HV battery hose.
| NG |
|
CONNECT SECURELY |
|
|
3. |
CHECK HARNESS AND CONNECTOR (AM VOLTAGE) |
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(a) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.
(b) Remove the No. 1 HV battery hose.
Click here
|
(c) Disconnect the z26 battery ECU assembly connector. NOTICE: Before disconnecting the connector, check that it is not loose or disconnected. |
|
(d) Connect the cable to the negative (-) auxiliary battery terminal.
|
(e) Measure the voltage according to the value(s) in the table below. Standard Voltage:
NOTICE:
|
|
(f) Disconnect the cable from the negative (-) auxiliary battery terminal.
(g) Reconnect the z26 battery ECU assembly connector.
(h) Install the No. 1 HV battery hose.
| OK |
|
REPLACE BATTERY ECU ASSEMBLY
|
|
|
4. |
CHECK HARNESS AND CONNECTOR (ECU-B NO. 2 FUSE - BATTERY TERMINAL) |
|
(a) Remove the ECU-B NO. 2 fuse from the instrument panel junction block assembly. |
|
(b) Disconnect the cable from the negative (-) auxiliary battery terminal.
(c) Disconnect the cable from the positive (+) auxiliary battery terminal.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
ECU-B NO. 2 fuse terminal 1 - Auxiliary battery positive (+) cable |
Ignition switch off |
Below 1 Ω |
|
ECU-B NO. 2 fuse terminal 1 - Body ground |
Ignition switch off |
10 kΩ or higher |
(e) Connect the cable to the positive (+) auxiliary battery terminal.
(f) Connect the cable to the negative (-) auxiliary battery terminal.
(g) Install the ECU-B NO. 2 fuse to the instrument panel junction block assembly.
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (ECU-B NO. 2 FUSE - BATTERY ECU ASSEMBLY) |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (ECU-B NO. 2 FUSE - BATTERY TERMINAL) |
|
|