Toyota Corolla Cross: Hybrid/EV Battery Current Sensor for Driving Control Circuit Short to Ground (P1C9F11,P1C9F15)
DESCRIPTION
Refer to the description for DTC P0ABF11.
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DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | MIL |
Warning Indicate | Note |
|---|---|---|---|---|---|---|
|
P1C9F11 | Hybrid/EV Battery Current Sensor for Driving Control Circuit Short to Ground |
"Hybrid/EV Battery Current for Driving Control" is excessively low (terminal IBA voltage stuck at 5 V). (1 trip detection logic) |
Battery ECU assembly |
Comes on | Master Warning: Comes on | SAE Code: P1CA1 |
|
P1C9F15 | Hybrid/EV Battery Current Sensor for Driving Control Circuit Short to Auxiliary Battery or Open |
"Hybrid/EV Battery Current for Driving Control" is excessively high (terminal IBA voltage stuck at 0 V). (1 trip detection logic) |
Battery ECU assembly |
Comes on | Master Warning: Comes on | SAE Code: P1CA2 |
MONITOR DESCRIPTION
The battery ECU assembly monitors its internal circuit connected to the battery current sensor. If the battery ECU assembly detects a malfunction in this internal circuit, it will illuminate the MIL and store a DTC.
MONITOR STRATEGY
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Related DTCs | P1CA1 (INF P1C9F11): Hybrid/EV battery pack current sensor circuit malfunction (+B short) P1CA2 (INF P1C9F15): Hybrid/EV battery pack current sensor circuit malfunction (GND short) |
|
Required sensors/components | Battery current sensor |
|
Frequency of operation | Continuous |
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Duration | TMC's intellectual property |
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MIL operation | Immediately |
|
Sequence of operation | None |
TYPICAL ENABLING CONDITIONS
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The monitor will run whenever the following DTCs are not stored |
TMC's intellectual property |
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Other conditions belong to TMC's intellectual property |
- |
TYPICAL MALFUNCTION THRESHOLDS
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TMC's intellectual property | - |
COMPONENT OPERATING RANGE
|
Battery ECU assembly | DTC P1CA1 (INF P1C9F11) is not detected DTC P1CA2 (INF P1C9F15) 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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- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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- 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 10 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.
PROCEDURE
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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 |
|---|---|
|
"P1C9F11 or P1C9F15" 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 | |
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P060687 | Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message | |
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P0ABF11 | Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground | |
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P0ABF15 | Hybrid/EV Battery Current Sensor "A" Circuit Short to Auxiliary Battery or Open | |
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P0ABF28 | Hybrid/EV Battery Current Sensor "A" Signal Bias Level Out of Range / Zero Adjustment Failure | |
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P0ABF2A | Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range | |
|
Hybrid control system |
P0A1F94 | Hybrid/EV Battery Energy Control Module Unexpected Operation |
(b) Turn the ignition switch off.
| A | .gif) | REPLACE BATTERY ECU ASSEMBLY |
| B | | GO TO DTC CHART (HYBRID BATTERY SYSTEM) |
| C | | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
READ NEXT:
Hybrid/EV Battery Current Sensor for Driving Control Voltage Out of Range (P1C9F1C)
DESCRIPTION Refer to the description for DTC P0ABF11.
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DTC No. Detection Item
DTC Detection Condition
Trouble Area MIL
Warning Indicate Note
P1C9
Hybrid/EV Battery Stack 1 Voltage Difference Out of Range (P1CC81E,P1CC91E)
DESCRIPTION The HV battery is composed of 60 cells (3.7 V each) in series. The battery ECU assembly monitors difference in voltage of each HV battery cell to detect malfunctions of the HV battery.
Hybrid/EV Battery Discharge Control Malfunction (P300000)
DESCRIPTION The battery ECU assembly alerts the driver and performs fail-safe control based on malfunction signals. If the SOC drops due to running out of fuel, the vehicle being left with the shift l
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Transmission Fluid Pressure Sensor/Switch "A" Circuit Short To Ground (P084011)
DESCRIPTION
The TCM performs learning control for the belt clamping pressure based on the
belt clamping pressure signal, which is output by the oil pressure sensor.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
MIL
M
Removal
REMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL)
Procedure Part Name Code
1 CAM TIMING OIL CONTROL SOLENOID ASSEMBLY
15370
- -
2 O-RING
-
- -
● Non-reusable part
★ Precoated part
