| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001OR2L |
| Model Year Start: 2020 | Model: RAV4 HV | Prod Date Range: [06/2020 - ] |
| Title: HYBRID / BATTERY CONTROL: REAR MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY): P0A7973; Drive Motor "B" Inverter Actuator Stuck Closed; 2020 - 2024 MY RAV4 HV [06/2020 - ] | ||
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DTC |
P0A7973 |
Drive Motor "B" Inverter Actuator Stuck Closed |
DTC SUMMARY
MALFUNCTION DESCRIPTION
This DTC is stored when a short is detected in the inverter with converter assembly (rear motor inverter) or the rear traction motor with transaxle assembly (rear motor (MGR)). The cause of this malfunction may be one of the following:
Internal inverter malfunction
- Rear motor inverter internal circuit malfunction
Rear traction motor with transaxle assembly (rear motor (MGR)) malfunction
- Open or short circuit
- Iron particles or damage from foreign objects
DESCRIPTION
For a description of the inverter.
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![2020 - 2024 MY RAV4 HV [06/2020 - ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY): P0D2D16,P0D2D17,P0D2D1F; Drive Motor "A" Inverter Voltage Sensor(VH) Circuit Voltage Below Threshold+](/t3Portal/stylegraphics/info.gif)
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DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
|---|---|---|---|---|---|
|
P0A7973 |
Drive Motor "B" Inverter Actuator Stuck Closed |
Current flow to any phase of the rear motor (MGR) exceeds the threshold after the rear motor inverter is shut down due to a DTC indicating a rear motor inverter malfunction (overheating, overcurrent or circuit malfunction) being stored. (1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
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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- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON and turn the Techstream on.
- With ignition switch ON and wait for 5 seconds or more.
- Turn the ignition switch to ON (READY) and wait for 5 seconds or more.
-
With the vehicle stopped, begin moving with the accelerator opening angle between 20% to 50% and a speed of approximately 10 km/h (6 mph), then stop the vehicle and repeat the same procedure several times.
HINT:
While doing this, check that the "Rear Motor Torque" value does not remain at 0 N*m continuously, but rather changes to indicate that the rear motor is operating.
(Unless rear motor torque is restricted due to DTC output, the rear motor torque will not remain at 0 N*m continuously.)
- Enter the following menus: Powertrain / Rear Motor Generator / 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, perform driving pattern again.
WIRING DIAGRAM
Refer to the wiring diagram for the Rear Motor High-voltage Circuit.
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CAUTION / NOTICE / HINT
CAUTION:
-
Before the following operations are conducted, take precautions to prevent electric shock by turning the ignition switch off, wearing insulated gloves, and removing the service plug grip from HV battery.
- Inspecting the high-voltage system
- Disconnecting the low voltage connector of the inverter with converter assembly
- Disconnecting the low voltage connector of the HV battery
-
To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.
-
After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
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After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
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HINT:
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
*a
Without waiting for 10 minutes
NOTICE:
-
After turning the ignition 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.
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- DTC P0A7973 is stored after DTCs P0A799E and/or P1C5E19 are stored. After troubleshooting and repairing the malfunction which caused DTC P0A7973 to be stored, be sure to troubleshoot the other DTCs.
- Depending on the conditions in which the vehicle is being operated when a short circuit occurs in the inverter with converter assembly, the rear traction motor with transaxle assembly may be affected. As this DTC is stored if a short circuit occurs in the inverter with converter assembly, it is necessary to perform a road test to check the rear traction motor with transaxle assembly. If problems are found, replace the malfunctioning parts.
- After completing the repair, including the repair of previously output DTCs, drive the vehicle at a speed of approximately 40 km/h (25 mph) for 1 minute and check that DTC P0A9100 is not output. If DTC P0A9100 is output, replace the rear traction motor with transaxle assembly.
PROCEDURE
|
1. |
GO TO MOTOR GENERATOR CONTROL SYSTEM |
(a) Go to Motor Generator Control System.
Click here
HINT:
For the P0A7973 inspection procedures, refer to the Motor Generator Control System section.
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END |
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