Lexus ES: 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 |
|---|---|---|---|---|---|
| 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 Light: Comes on |
| 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 Light: Comes on |
Related Data List | DTC No. | Data List |
|---|---|
| P1C9F11 |
|
| P1C9F15 |
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
| 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 |
| 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 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 Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 2 minutes or more.
- Turn the power switch on (IG) and turn the Techstream on.
-
With power switch on (IG) 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 or N/A, perform the normal judgment procedure again.
PROCEDURE
| 1. | CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / HV Battery and Hybrid Control / Trouble Codes.
(d) 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 | |
| P060687 | Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message | |
| P0ABF11 | Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground | |
| P0ABF15 | Hybrid/EV Battery Current Sensor "A" Circuit Short to Auxiliary Battery or Open | |
| 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 | |
| Hybrid control system | P0A1F94 | Hybrid/EV Battery Energy Control Module Unexpected Operation |
(e) Turn the power switch off.
| A | .gif) | REPLACE BATTERY ECU ASSEMBLY |
| B | | GO TO DTC CHART (HYBRID BATTERY SYSTEM) |
| C | | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
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