- Open or short circuit in the rear motor resolver circuit
- Rear motor (MGR) internal malfunction (entry of foreign matter, etc.)
| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001OR26 |
| 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): P0A4521,P0A4522; Drive Motor "B" Position Sensor Signal Amplitude < Minimum; 2020 - 2024 MY RAV4 HV [06/2020 - ] | ||
|
DTC |
P0A4521 |
Drive Motor "B" Position Sensor Signal Amplitude < Minimum |
|
DTC |
P0A4522 |
Drive Motor "B" Position Sensor Signal Amplitude > Maximum |
DTC SUMMARY
MALFUNCTION DESCRIPTION
These DTCs indicate that the resolver output signal is abnormal. The cause of this malfunction may be one of the following:
|
Area |
Main Malfunction Description |
|---|---|
|
Inverter Low-voltage Circuit |
The connectors are not connected properly |
|
Rear traction motor with transaxle assembly |
|
|
Wire harness between the resolver and inverter with converter assembly |
|
|
Inside of inverter |
Inverter with converter assembly internal circuit malfunction |
DESCRIPTION
Refer to the system description for the Rear Motor Resolver Circuit.
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![2020 - 2024 MY RAV4 HV [06/2020 - ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): Rear Motor Resolver Circuit](/t3Portal/stylegraphics/info.gif)
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
|---|---|---|---|---|---|
|
P0A4521 |
Drive Motor "B" Position Sensor Signal Amplitude < Minimum |
Open or short in rear motor resolver circuit: The rear motor resolver signal is out of the standard range. (Signal amplitude is small) (1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
|
P0A4522 |
Drive Motor "B" Position Sensor Signal Amplitude > Maximum |
Rear motor resolver out of range: The rear motor resolver signal is out of the standard range. (Signal amplitude is large) (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) with the shift lever in P and wait for 5 seconds or more.
- Depress the accelerator pedal of the vehicle with the engine stopped and the shift lever in P to start the engine.
- Drive the vehicle forward with the shift lever in D for 5 m (16 ft.) or more.
- Drive the vehicle backward with the shift lever in R for 5 m (16 ft.) or more.
- 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 Resolver 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.
-
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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HINT:
- If the problem symptom cannot be reproduced, performing a road test on a road on which the vehicle tends to vibrate will make it easier to reproduce the symptom.
- If the resolver is malfunctioning, the vehicle may not drive smoothly.
- When inspecting the connectors, if it is difficult to judge if a connector was disconnected, deformed or improperly secured, disconnect and reconnect the connector and then check for DTCs again. Check if the same DTC is output. If the same DTC is not output, improper connection of connectors is suspected.
- As a malfunction detection threshold may be exceeded when performing the vibration or heat connector inspections, make sure to perform the following inspection to check that the DTC was not stored due to the malfunction of a part.
PROCEDURE
|
1. |
GO TO MOTOR GENERATOR CONTROL SYSTEM |
(a) Go to Motor Generator Control System.
Click here
HINT:
For the P0A4521 and P0A4522 inspection procedures, refer to the Motor Generator Control System section.
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END |
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