Toyota Corolla Cross: Hybrid/EV Battery Stack 1 Delta SOC High (Extreme) (P1A8100,P1A8600)
DESCRIPTION
The HV battery is composed of 60 cells (3.7 V each) in series. The battery ECU assembly monitors the difference in capacity of each HV battery cell to detect malfunctions of the HV battery.
|
DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | MIL |
Warning Indicate | Note |
|---|---|---|---|---|---|---|
|
P1A8100 | Hybrid/EV Battery Stack 1 Delta SOC High (Extreme) |
The difference in capacity of each cell of the No. 1 HV supply stack sub-assembly exceeds the specified value excessively. (1 trip detection logic) |
| Comes on |
Master Warning: Comes on |
SAE Code: P1A81 |
|
P1A8600 | Hybrid/EV Battery Stack 2 Delta SOC High (Extreme) |
The difference in capacity of each cell of the No. 2 HV supply stack sub-assembly exceeds the specified value excessively. (1 trip detection logic) |
| Comes on |
Master Warning: Comes on |
SAE Code: P1A86 |
HINT:
These DTCs can be stored after clearing the DTCs and driving the vehicle for approximately 10 minutes.
MONITOR DESCRIPTION
If the battery ECU assembly detects that the difference in capacity of each HV battery cell exceeds the specified value (excessively), the battery ECU assembly illuminates the MIL and stores a DTC.
MONITOR STRATEGY
|
Related DTCs | P1A81 (INF P1A8100), P1A86 (INF P1A8600): Battery cell malfunction |
|
Required sensors/components | Battery ECU assembly |
|
Frequency of operation | Continuous |
|
Duration | TMC's intellectual property |
|
MIL operation | 1 driving cycle |
|
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 P1A81 (INF P1A8100) is not detected DTC P1A86 (INF P1A8600) 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.
Click here
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- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
- 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.
- Drive the vehicle on urban roads for approximately 10 minutes.[*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
Refer to the wiring diagram for DTC P1A001C.
Click here
CAUTION / NOTICE / HINT
CAUTION:
Refer to the precautions before inspecting high voltage circuit.
Click here
NOTICE:
- After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
Click here
- 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.
Click here
PROCEDURE
|
1. | CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL) |
(a) Check for DTCs.
Powertrain > HV Battery > Trouble Codes Powertrain > Hybrid Control > Trouble Codes|
Result | Proceed to |
|---|---|
|
"P1A8100 or P1A8600" only is output, or DTCs except the ones in the table below are also output. |
A |
| DTCs of hybrid battery system in the table below are output. |
B |
| DTCs of hybrid control system in the table below are output. |
C |
|
System | Relevant DTC | |
|---|---|---|
|
Hybrid battery system |
P060A47 | Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure |
|
P060B49 | Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure | |
|
P060687 | Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message | |
|
P0ABF28 | Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure | |
|
P0ABF2A | Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range | |
|
P1CBB12 | Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Auxiliary Battery | |
|
P1CBB14 | Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Ground or Open | |
|
P1CC81E | Hybrid/EV Battery Stack 1 Voltage Difference Out of Range | |
|
P1CC91E | Hybrid/EV Battery Stack 2 Voltage Difference Out of Range | |
|
Hybrid control system |
P0A1F94 | Hybrid/EV Battery Energy Control Module Unexpected Operation |
|
P0B231C | Hybrid/EV Battery "A" Voltage Sensor Voltage Out of Range | |
|
P1C2D62 | Hybrid/EV Battery "A" Voltage Sensor/ Boosting Converter Voltage Sensor "A" Signal Compare Failure | |
(b) Turn the ignition switch off.
| B | .gif) | GO TO DTC CHART (HYBRID BATTERY SYSTEM) |
| C | | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
|
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|
2. | CHECK DTC |
(a) Check the DTCs that were output when the vehicle was brought to the workshop.
|
Result | Proceed to |
|---|---|
|
"P1A8100" is also output. |
A |
| "P1A8600" is also output. |
B |
| B | | GO TO STEP 7 |
|
|
3. | CHECK FREEZE FRAME DATA (HYBRID/EV BATTERY CELL VOLTAGE) |
(a) Read the value of freeze frame data items "Hybrid/EV Battery Cell 1 Voltage" through "Hybrid/EV Battery Cell 30 Voltage" for DTC P1A8100 and make a note if the value of any is the lowest voltage value.
Powertrain > HV Battery > Trouble Codes(b) Turn the ignition switch off.
|
|
4. | CHECK BATTERY ECU ASSEMBLY (GA0 - VA30) |
Click here
| Result |
Proceed to |
|---|---|
| The voltage between the terminals is 50 kΩ or more. |
A |
| Other than above |
B |
| B | | REPLACE BATTERY ECU ASSEMBLY |
|
|
5. | CHECK TOTAL DISTANCE DRIVEN |
(a) Read the odometer to check the total distance the vehicle has been driven.
|
Result | Proceed to | |
|---|---|---|
|
Total distance driven is less than 200000 km (124280 mile) |
A | |
|
Total distance driven is 200000 km (124280 mile) or more |
Current total distance driven - total distance driven when HV battery junction block assembly replaced = less than 200000 km (124280 mile) *1 | |
|
Other than above |
B | |
HINT:
*1: If the HV battery junction block assembly has been replaced, use the total distance driven since it was replaced.
| A | | REPLACE HV BATTERY |
|
|
6. | REPLACE HV BATTERY |
Click here
| NEXT | | REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY |
|
7. | CHECK FREEZE FRAME DATA (HYBRID/EV BATTERY CELL VOLTAGE) |
(a) Read the value of freeze frame data items "Hybrid/EV Battery Cell 31 Voltage" through "Hybrid/EV Battery Cell 60 Voltage" for DTC P1A8600 and make a note if the value of any is the lowest voltage value.
Powertrain > HV Battery > Trouble Codes(b) Turn the ignition switch off.
|
|
8. | CHECK BATTERY ECU ASSEMBLY (VAD - VA60) |
Click here
| Result |
Proceed to |
|---|---|
| The voltage between the terminals is 50 kΩ or more. |
A |
| Other than above |
B |
| B | | REPLACE BATTERY ECU ASSEMBLY |
|
|
9. | CHECK TOTAL DISTANCE DRIVEN |
(a) Read the odometer to check the total distance the vehicle has been driven.
|
Result | Proceed to | |
|---|---|---|
|
Total distance driven is less than 200000 km (124280 mile) |
A | |
|
Total distance driven is 200000 km (124280 mile) or more |
Current total distance driven - total distance driven when HV battery junction block assembly replaced = less than 200000 km (124280 mile) *1 | |
|
Other than above |
B | |
HINT:
*1: If the HV battery junction block assembly has been replaced, use the total distance driven since it was replaced.
| A | | REPLACE HV BATTERY |
|
|
10. | REPLACE HV BATTERY |
Click here
| NEXT | | REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY |
READ NEXT:
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DESCRIPTION The battery ECU assembly monitors its internal operation and will store these DTCs when it detects an internal malfunction.
DTC No. Detection Item
DTC Detection Condition
Flying Capacitor Circuit Voltage Out of Range (P1AFD00)
DESCRIPTION The battery ECU assembly monitors its internal operation and will store these DTCs when it detects an internal malfunction.
DTC No. Detection Item
DTC Detection Condition
Hybrid/EV Battery ECU Multiple Reset (P1AFF00)
DESCRIPTION The battery ECU assembly monitors its internal operation and will store these DTCs when it detects an internal malfunction.
DTC No. Detection Item
DTC Detection Condition
SEE MORE:
Automatic High Beam Switch Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) detects the ON/OFF
signal of the automatic high beam switch (turn signal switch).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main body ECU (multiplex network body ECU),
refer to Registration.*1
for HEV Mo
Removal
REMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL)
Procedure Part Name Code
1 EGR COOLER ASSEMBLY
25680 -
- -
2 NO. 1 EGR PIPE SUB-ASSEMBLY
25601
- -
3 EGR VALVE ADAPTER GASKET
25629 -
-
