HYBRID / BATTERY CONTROL HYBRID BATTERY SYSTEM P056014 System Voltage (BATT) Circuit Short to Ground or Open
DESCRIPTION
Auxiliary battery power is supplied to the AM 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 | Note |
|---|---|---|---|---|---|---|
| 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) |
·
Wire harness or connector ·
Battery ECU assembly ·
Fuse |
Comes on | Master Warning:
Comes on |
SAE Code: P0562 |
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.
·When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS 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 GTS 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:
-
Refer to the precautions before inspecting high voltage circuit.
- NOTICE:
- ·
Be sure to check that the applicable DTC is output from the hybrid battery system.
·After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
·When disconnecting and reconnecting the auxiliary battery
- HINT:
-
When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.
PROCEDURE
Remove the ECU-B NO. 2 fuse from the power distribution box assembly.
Check if there is an open circuit in the ECU-B NO. 2 fuse in the power distribution box assembly.
- OK:
There is no open circuit in the ECU-B NO. 2 fuse.
Install the ECU-B NO. 2 fuse.
- Result:
Proceed to OK NG
OK
NG
- CAUTION:
-
Be sure to wear insulated gloves and protective goggles.
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.
Check the connector connections and contact pressure of the relevant terminals for the battery ECU assembly.
- OK:
The connector is connected securely and there are no contact pressure problems.
- Result:
Proceed to OK NG
OK
NG
- CAUTION:
-
Be sure to wear insulated gloves and protective goggles.
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.
Disconnect the battery ECU assembly connector.
- NOTICE:
-
Before disconnecting the connector, check that it is not loose or disconnected.
Connect the cable to the negative (-) auxiliary battery terminal.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition O217-24 (AM) - O217-10 (GND) Ignition switch off 11 to 14 V
Disconnect the cable from the negative (-) auxiliary battery terminal.
Reconnect the battery ECU assembly connector.
- HINT:
-
As there might be an intermittent malfunction, inspect the following items even if the measured voltage is as specified.
- ·
Installation condition of fuse(s) (before removing fuse(s)) (power source circuit)
·Fuse condition (before and after removing fuse(s)) (power source circuit)
·Connection condition of connectors (power source circuit)
·Wire harness condition (power source circuit)
·Wire harness condition (GND circuit)
- Result:
Proceed to OK NG
OK
NG