| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001H3LO |
| 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): P056014; System Voltage (BATT) Circuit Short to Ground or Open; 2019 - 2024 MY RAV4 HV [02/2019 - ] | ||
|
DTC |
P056014 |
System Voltage (BATT) Circuit Short to Ground or Open |
DESCRIPTION
Auxiliary battery power is supplied to the BATT terminal of the hybrid vehicle control 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 hybrid vehicle control 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 BATT terminal of the hybrid vehicle control ECU assembly, the hybrid vehicle control ECU assembly will determine that a malfunction has occurred in the back-up power supply system, and it will store a DTC. The MIL will illuminate the next time the ignition switch ON.
MONITOR STRATEGY
|
Related DTCs |
P0562 (INF P056014): System voltage range check (Low voltage) |
|
Required sensors/components |
Main: Back-up power source circuit Sub: Hybrid vehicle control 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
|
Auxiliary battery voltage |
Between 9 and 14 V |
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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![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)
-
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 / 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 the normal judgment procedure again.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
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 CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR) |
|
(a) Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU assembly connectors. Click here
OK: The connectors are connected securely and there are no contact pressure problems. |
|
| NG |
|
CONNECT SECURELY |
|
|
2. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE OF HYBRID VEHICLE CONTROL ECU ASSEMBLY) |
(a) Turn the ignition switch off.
(b) Measure the voltage according to the value(s) in the table below.
|
*a |
Component with harness connected (Hybrid Vehicle Control ECU Assembly) |
- |
- |
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A30-27 (BATT) - A30-3 (E1) |
Ignition switch off |
11 to 14 V |
| OK |
|
REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY
|
|
|
3. |
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) |
|
|
4. |
CHECK HARNESS AND CONNECTOR (ECU-B NO. 2 FUSE - AUXILIARY 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 |
|---|---|---|
|
1 (ECU-B NO. 2 fuse terminal) - Auxiliary battery positive (+) cable |
Ignition switch off |
Below 1 Ω |
|
1 (ECU-B NO. 2 fuse terminal) - 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.
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
CHECK HARNESS AND CONNECTOR (ECU-B NO. 2 FUSE - HYBRID VEHICLE CONTROL ECU ASSEMBLY) |
(a) Remove the ECU-B NO. 2 fuse from the instrument panel junction block assembly.
(b) Disconnect the A30 hybrid vehicle control ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
|
*1 |
Instrument Panel Junction Block Assembly |
*2 |
ECU-B NO. 2 Fuse Terminal |
|
*a |
Front view of wire harness connector (to Hybrid Vehicle Control ECU Assembly) |
- |
- |
Standard Resistance (Check for Open):
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2 (ECU-B NO. 2 fuse terminal) - A30-27 (BATT) |
Ignition switch off |
Below 1 Ω |
Standard Resistance (Check for Short):
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2 (ECU-B NO. 2 fuse terminal) or A30-27 (BATT) - Body ground and other terminals |
Ignition switch off |
10 kΩ or higher |
(d) Reconnect the A30 hybrid vehicle control ECU assembly connector.
(e) Reinstall the ECU-B NO. 2 fuse.
| OK |
|
REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|