Lexus ES: Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range (P0ABF2A)
DESCRIPTION
Refer to the description for DTC P0ABF11.
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| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P0ABF2A | Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range | The battery current sensor output is stuck even when battery voltage change. (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
| DTC No. | Data List |
|---|---|
| P0ABF2A | Hybrid Battery Current for Hybrid Battery Control*1 |
HINT:
*1: The value of "Hybrid Battery Current for Hybrid Battery Control" usually changes by 4 A or more while the vehicle is accelerating and decelerating.
MONITOR DESCRIPTION
If the battery voltage sensor detects a malfunction in the battery current sensor, the hybrid vehicle control ECU will illuminate the MIL and store a DTC.
MONITOR STRATEGY
| Related DTCs | P0AC0 (INF P0ABF2A): Current sensor malfunction |
| Required sensors/components | Battery current sensor |
| 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 voltage sensor | DTC P0AC0 (INF P0ABF2A) 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.
-
Drive the vehicle on urban roads for approximately 5 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 / 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 or N/A, perform the normal judgment procedure again.
PROCEDURE
| 1. | CHECK DTC OUTPUT (HYBRID CONTROL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Check and record any HV system DTCs and freeze frame data.
Powertrain > Hybrid Control > Trouble Codes| Result | Proceed to |
|---|---|
| Only DTC P0ABF2A is output or DTC P0ABF2A and DTCs other than those in the following table are output. | A |
| DTC P0ABF2A and any of the DTCs in the following table are output at the same time. | B |
| Relevant DTC | |
|---|---|
| P0A9563 | High Voltage Fuse Accumulated Load History |
| 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 |
| P0AFC00 | Hybrid/EV Battery Sensor Module |
| P0AFC96 | Hybrid/EV Battery Sensor Module Component Internal Failure |
| 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 |
| P308A12 | Hybrid/EV Battery Voltage Sensor All Circuit Short to Auxiliary Battery |
| P0B3B14, P0B4014, P0B4514, P0B4A14, P0B4F14, P0B5414, P0B5914, P0B5E14, P0B6314, P0B6814, P0B6D14, P0B7214 | Hybrid/EV Battery Voltage Sensor "A - L" Circuit Short to Ground or Open |
(e) Turn the power switch off.
| B | .gif) | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
|
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| 2. | READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
NOTICE:
Do not turn the power switch on (READY).
(c) Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid Battery Block 1 to 11 Voltage.
NOTICE:
Select "Hybrid Battery Block 1 to 11 Voltage" only. (Do not select any other Data List items.)
Powertrain > Hybrid Control > Data List| Tester Display |
|---|
| Hybrid Battery Block 1 Voltage |
| Hybrid Battery Block 2 Voltage |
| Hybrid Battery Block 3 Voltage |
| Hybrid Battery Block 4 Voltage |
| Hybrid Battery Block 5 Voltage |
| Hybrid Battery Block 6 Voltage |
| Hybrid Battery Block 7 Voltage |
| Hybrid Battery Block 8 Voltage |
| Hybrid Battery Block 9 Voltage |
| Hybrid Battery Block 10 Voltage |
| Hybrid Battery Block 11 Voltage |
(d) Check the voltage of each HV battery block voltage of "Hybrid Battery Block 1 to 11 Voltage" in the Data List with the power switch on (IG).
Specified Condition:
Any "Hybrid Battery Block Voltage" changes by 0.3 V or more, 60 seconds after the power switch is turned on (IG). (The difference between the maximum and minimum voltage is 0.3 V or more.)
| Result | Proceed to |
|---|---|
| The change in voltage of any "Hybrid Battery Block Voltage" is 0.3 V or more. | A |
| Other than above | B |
(e) Turn the power switch off.
| A | | REPLACE BATTERY VOLTAGE SENSOR |
| B | | REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY |
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Inspection
INSPECTION PROCEDURE 1. INSPECT CANISTER (CHARCOAL CANISTER ASSEMBLY) (a) Visually check the canister (charcoal canister assembly). (1) Visually check the canister (charcoal canister assembly) for cracks or damage. If cracks or damage are found, replace the canister (charcoal canister assembly).
