DTC SUMMARY
MALFUNCTION DESCRIPTION
The hybrid vehicle control ECU (main CPU) monitors the battery ECU assembly.
The cause of this malfunction may be the following:
DESCRIPTION
The hybrid vehicle control ECU (main CPU) monitors the battery ECU assembly and stores this DTC when it detects a malfunction.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
---|---|---|---|---|---|
P0A1F94 | Hybrid/EV Battery Energy Control Module Unexpected Operation | The battery ECU assembly value received by the hybrid vehicle control ECU (main CPU) exceeds the threshold for a certain period of time. (1 trip detection logic) | Battery ECU assembly | Comes on | Master Warning Light: Comes on |
MONITOR DESCRIPTION
The battery ECU assembly monitors the hybrid vehicle control ECU via CAN communication. If the battery ECU assembly detects a malfunction in the hybrid vehicle control ECU, it will illuminate the MIL and store a DTC.
MONITOR STRATEGY
Related DTCs | P0A1F (INF P0A1F94): Battery Energy Control Module |
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
Hybrid vehicle control ECU | P0A1F (INF P0A1F94) is not detected |
CONFIRMATION DRIVING PATTERN
HINT:
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HINT:
[*1] : Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
HINT:
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 for DTCs.
Powertrain > Hybrid Control > Trouble Codes Result | Proceed to |
---|---|
P0A1F94 only is output. | A |
DTCs except P0A1F94 are output. | B |
(e) Turn the power switch off.
A | REPLACE BATTERY ECU ASSEMBLY |
B | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |