DESCRIPTION
The battery ECU assembly monitors the hybrid vehicle control ECU via CAN communication. If the battery ECU assembly detects that the hybrid vehicle control ECU is malfunctioning, it will illuminate the MIL and store a DTC.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
---|---|---|---|---|---|
P0A1D94 | Hybrid/EV Powertrain Control Module Unexpected Operation | Hybrid vehicle control ECU internal malfunction: An abnormal signal from the hybrid vehicle control ECU is detected by the battery ECU assembly. (1 trip detection logic) | Hybrid vehicle control ECU | 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 | P0A1D (INF P0A1D94): Hybrid powertrain control module |
Required sensors/components | Hybrid vehicle control ECU |
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
Hybrid vehicle control ECU | DTC P0A1D (INF P0A1D94) is not detected |
CONFIRMATION DRIVING PATTERN
HINT:
Click here
Click here
HINT:
[*1]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
HINT:
CAUTION / NOTICE / HINT
CAUTION:
*a | Without waiting for 10 minutes |
Click here
HINT:
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
Click here
PROCEDURE
1. | CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) |
(a) Check the connections of the hybrid vehicle control ECU connector. Click here OK: The connectors are connected securely and there are no contact pressure problems. | |
NG | CONNECT SECURELY |
|
2. | CHECK CONNECTOR CONNECTION CONDITION (BATTERY ECU ASSEMBLY CONNECTOR) |
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(a) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
(b) Remove the No. 1 HV battery hose.
Click here
(c) Check the connector connections and contact pressure of the relevant terminals for the battery ECU assembly. Click here OK: The connector is connected securely and there are no contact problems. | |
(d) Install the No. 1 HV battery hose.
NG | CONNECT SECURELY |
|
3. | CHECK CONNECTOR CONNECTION CONDITION (NO. 1 HYBRID BATTERY PACK WIRE)) |
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(a) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
(b) Remove the No. 4 HV battery protector.
Click here
(c) Check the connector connections and contact pressure of the relevant terminals for the HV battery. Click here OK: The connector is connected securely and there are no contact problems. | |
(d) Install the No. 4 HV battery protector.
NG | CONNECT SECURELY |
|
4. | REPLACE HYBRID VEHICLE CONTROL ECU |
Click here
NEXT | END |