Lexus ES: 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 |
|---|---|---|---|---|---|
| P1C9F1C | Hybrid/EV Battery Current Sensor for Driving Control Voltage Out of Range | The difference between IBA and IB0 exceeds the threshold. (1 trip detection logic) | Battery voltage sensor | Comes on | Master Warning Light: Comes on |
IB0 is used for battery control and IBA is used for driving control. Although IB0 and IBA receive voltage output by the battery current sensor through the same terminal, their output may differ as they are connected through separate filter circuits within the battery voltage sensor.
Related Data List | DTC No. | Data List |
|---|---|
| P1C9F1C |
|
MONITOR DESCRIPTION
If the battery voltage sensor detects a malfunction in the battery voltage sensor circuit, the hybrid vehicle control ECU will illuminate the MIL and store a DTC.
MONITOR STRATEGY
| Related DTCs | P1CA0 (INF P1C9F1C): Current sensor malfunction |
| Required sensors/components | Battery voltage 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 voltage sensor | DTC P1CA0 (INF P1C9F1C) 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 / 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 |
|---|---|
| P0AFC00, P0AFC96, P308A12, P1CBB12, P1CBB14, P0ABF15, P0ABF28 or P0ABF2A is not output. | A |
| P0AFC00, P0AFC96, P308A12, P1CBB12, P1CBB14, P0ABF15, P0ABF28 or P0ABF2A is output. | B |
(e) Turn the power switch off.
| A | .gif) | REPLACE BATTERY VOLTAGE SENSOR |
| B | | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
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