HYBRID CONTROL SYSTEM, Diagnostic DTC:P0A1B-198
| DTC Code | DTC Name |
|---|---|
| P0A1B-198 | Drive Motor "A" Control Module |
DESCRIPTION
The MG ECU located in the inverter with converter assembly monitors its internal operation and it will set DTCs when it detects malfunctions. If any of the following DTCs are output, replace the inverter with converter assembly.
Tech Tips
The term "drive motor A" indicates the motor (MG2).
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P0A1B | 198 | MG ECU internal malfunction: R/D converter NM stop error (1 trip detection logic) |
Inverter with converter assembly |
MONITOR DESCRIPTION
The MG ECU (in the inverter with converter assembly) performs many diagnostic tests to verify proper operation of internal ECU systems. In one of those tests, the MG ECU checks for an R/D (Resolver/ Digital converter) malfunction involving the motor resolver. If the MG ECU detects an R/D converter error, it will conclude that there is an internal malfunction involving the motor resolver. The power management control ECU will illuminate the MIL and set a DTC.
MONITOR STRATEGY
| Related DTCs | P0A1B (INF 198): R/D converter NM signal stop abnormality |
| Required sensors / components | Inverter with converter (MG ECU) |
| 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 present | TMC's intellectual property |
| Other conditions belong to TMC's intellectual property | - |
TYPICAL MALFUNCTION THRESHOLDS
| TMC's intellectual property | - |
COMPONENT OPERATING RANGE
| Power management control ECU | DTC P0A1B (INF 198) is not detected |
CONFIRMATION DRIVING PATTERN
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Connect the Techstream to the DLC3.
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Turn the power switch on (IG) and turn the Techstream on.
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Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
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Turn the power switch off.
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Turn the power switch on (READY).
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Drive the vehicle at 5 km/h (3 mph) or more for 30 seconds or more. [A]
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Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. [B]
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Read the current DTCs.
Tech Tips
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If a current DTC is output, the system is malfunctioning.
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If current DTCs are not output, check for permanent DTCs.
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Check that the permanent DTCs are cleared.
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If the permanent DTCs are not cleared, perform the universal trip, and then check for permanent DTCs again.
INSPECTION PROCEDURE
Tech Tips
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If DTC P0A1B-168 is output, clear the DTCs, perform the following procedure, and check that the same DTC is not output after the repair.
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Turn the power switch on (READY).
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Drive the vehicle at 5 km/h (3 mph) or more for 5 seconds or more.
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If DTC P0A1B-795 or P0A1B-796 is output, clear the DTCs, perform the following procedure, and check that the same DTC is not output after the repair.
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Turn the power switch on (IG) and wait for 5 seconds or more.
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When a resolver signal malfunction exists, the vehicle may not drive smoothly.
