| DTC Code | DTC Name |
|---|---|
| P0A1C-715 | Drive Motor "B" Control Module |
| P0A1C-798 | Drive Motor "B" Control Module |
| P0A1C-799 | Drive Motor "B" Control Module |
DESCRIPTION
The inverter with converter assembly (MG ECU) monitors its internal operation and detects malfunctions.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P0A1C-715 | Drive Motor "B" Control Module | Rear motor resolver angle malfunction: The difference between the resolver angle for control and estimated resolver angle exceeds the allowable value. (1 trip detection logic) |
|
Comes on | Master Warning Light: Comes on |
| P0A1C-798 | Drive Motor "B" Control Module | Rear motor resolver REF signal cycle malfunction: Excitation signal (REF signal) for resolver angle detection cycle malfunction. (1 trip detection logic) |
|
Comes on | Master Warning Light: Comes on |
| P0A1C-799 | Drive Motor "B" Control Module | Rear Motor resolver REF signal oscillation stop malfunction: An error is detected when the excitation signal (REF signal) for resolver angle detection is not detected. (1 trip detection logic) |
|
Comes on | Master Warning Light: Comes on |
CAUTION / NOTICE / HINT
CAUTION:
Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, 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.
Tech Tips
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
Note
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.
Tech Tips
If DTC P0A1C-715 is output, clear the DTCs, perform the following procedure, and check that the same DTC is not output after the repair.
Turn the power switch on (READY).
Drive the vehicle at 15 km/h (9 mph) or more for 30 seconds or more.
If DTC P0A1C-798 or P0A1C-799 is output, clear the DTCs, perform the following procedure, and check that the same DTC is not output after the repair.
Turn the power switch on (IG) and wait for 5 seconds or more.
When a resolver signal malfunction exists, the vehicle may not drive smoothly.
PROCEDURE
CHECK DTC OUTPUT (HYBRID CONTROL)
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
Check for DTCs.
| Result | ||||||
|---|---|---|---|---|---|---|
|
| Relevant DTC | |
|---|---|
| P0A3F-243 | Drive Motor "A" Position Sensor Circuit |
| P0A45-669 | Drive Motor "B" Position Sensor Circuit |
| P0A46-671 | Drive Motor "B" Position Sensor Circuit Range / Performance |
| P0A47-670 | Drive Motor "B" Position Sensor Circuit Low |
| P0A4B-253 | Generator Position Sensor Circuit |
Turn the power switch off.
| B |
|
GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here |
| A |
|
CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR)
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Check the connection condition of the low voltage connector of the inverter with converter assembly and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.
Note
Before disconnecting the connector, confirm that it is properly connected by checking that the locking claws are engaged and that the connector does not pull out.
| OK |
|---|
| - The connector is connected securely. |
| - The terminals are not deformed and are connected securely. |
| - No water or foreign matter in the connector. |
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Tech Tips
When connecting the connector, insert it with the locking lever in the raised position. Rotate the lever downward and make sure that the connector is pulled into its socket. When the locking lever is in its fully closed position, a click will be heard as its locking claws engage. After the click is heard, pull up on the connector to confirm that it is properly connected.
| B |
|
CONNECT SECURELY |
| C |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| A |
|
CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - GENERATOR RESOLVER)
| Result | |||
|---|---|---|---|
|
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Disconnect the C49 inverter with converter assembly connector.
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG).
| *a | Front view of wire harness connector (to Inverter with Converter Assembly) |
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Note
Turning the power switch on (IG) with the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
Reconnect the C49 inverter with converter assembly connector.
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK GENERATOR RESOLVER
| Result | |||
|---|---|---|---|
|
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Disconnect the C49 inverter with converter assembly connector.
| *a | Front view of wire harness connector (to Inverter with Converter Assembly) |
Measure the resistance according to the value(s) in the table below.
| Standard Resistance (Check for Open) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Standard Resistance (Check for Short) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Reconnect the C49 inverter with converter assembly connector.
| Result | |||
|---|---|---|---|
|
| NG |
|
CHECK CONNECTOR CONNECTION CONDITION (GENERATOR RESOLVER CONNECTOR) Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - MOTOR RESOLVER)
| Result | |||
|---|---|---|---|
|
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Disconnect the C49 inverter with converter assembly connector.
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG).
| *a | Front view of wire harness connector (to Inverter with Converter Assembly) |
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Note
Turning the power switch on (IG) with the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
Reconnect the C49 inverter with converter assembly connector.
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK MOTOR RESOLVER
| Result | |||
|---|---|---|---|
|
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Disconnect the C49 inverter with converter assembly connector.
| *a | Front view of wire harness connector (to Inverter with Converter Assembly) |
Measure the resistance according to the value(s) in the table below.
| Standard Resistance (Check for Open) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Standard Resistance (Check for Short) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Reconnect the C49 inverter with converter assembly connector.
| Result | ||||
|---|---|---|---|---|
|
| NG |
|
CHECK CONNECTOR CONNECTION CONDITION (MOTOR RESOLVER CONNECTOR) Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (INVERTER WITH CONVERTER ASSEMBLY - REAR MOTOR RESOLVER)
| Result | |||
|---|---|---|---|
|
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Disconnect the A58 inverter with converter assembly connector.
Connect the cable to the negative (-) auxiliary battery terminal.
Turn the power switch on (IG).
| *a | Front view of wire harness connector (to Inverter with Converter Assembly) |
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Note
Turning the power switch on (IG) with the low voltage connector of the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.
Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal.
Reconnect the A58 inverter with converter assembly connector.
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK REAR MOTOR RESOLVER
| Result | |||
|---|---|---|---|
|
CAUTION:
Be sure to wear insulated gloves.
Check that the service plug grip is not installed.
Note
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.
Disconnect the A58 inverter with converter assembly connector.
| *a | Front view of wire harness connector (to Inverter with Converter Assembly) |
Measure the resistance according to the value(s) in the table below.
| Standard Resistance (Check for Open) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Standard Resistance (Check for Short) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Connect the A58 inverter with converter assembly connector.
| Result | |||
|---|---|---|---|
|
| NG |
|
CHECK CONNECTOR CONNECTION CONDITION (REAR MOTOR RESOLVER CONNECTOR) Click here |
| OK |
|
CHECK CONNECTOR CONNECTION CONDITION (GENERATOR RESOLVER CONNECTOR)
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Check the connection condition of the generator resolver connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.
| OK |
|---|
| - The connector is connected securely. |
| - The terminals are not deformed and are connected securely. |
| - No water or foreign matter in the connector. |
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
| B |
|
CONNECT SECURELY |
| C |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| A |
|
CHECK CONNECTOR CONNECTION CONDITION (MOTOR RESOLVER CONNECTOR)
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Check the connection condition of the motor resolver connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.
| OK |
|---|
| - The connector is connected securely. |
| - The terminals are not deformed and are connected securely. |
| - No water or foreign matter in the connector. |
| Result | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
| B |
|
CONNECT SECURELY |
| C |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| A |
|
CHECK CONNECTOR CONNECTION CONDITION (REAR MOTOR RESOLVER CONNECTOR)
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Check the connection condition of the rear motor resolver connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.
| OK |
|---|
| - The connector is connected securely. |
| - The terminals are not deformed and are connected securely. |
| - No water or foreign matter in the connector. |
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
| A |
|
REPLACE INVERTER WITH CONVERTER ASSEMBLY Click here |
| B |
|
CONNECT SECURELY |
| C |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
CHECK CONNECTOR CONNECTION CONDITION (GENERATOR RESOLVER CONNECTOR)
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Check the connection condition of the generator resolver connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.
| OK |
|---|
| - The connector is connected securely. |
| - The terminals are not deformed and are connected securely. |
| - No water or foreign matter in the connector. |
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
| B |
|
CONNECT SECURELY |
| C |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| A |
|
INSPECT HYBRID VEHICLE TRANSAXLE ASSEMBLY (GENERATOR RESOLVER)
| Result | |||
|---|---|---|---|
|
Disconnect the C41 generator resolver connector.
| *a | Component without harness connected (Generator Resolver (Hybrid Vehicle Transaxle Assembly)) |
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Standard Resistance (Check for Short) | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Tech Tips
The generator resolver is not available as a supply part. If it requires replacement, replace the hybrid vehicle transaxle assembly.
Reconnect the C41 generator resolver connector.
| Result | |||
|---|---|---|---|
|
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| NG |
|
REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here |
CHECK CONNECTOR CONNECTION CONDITION (MOTOR RESOLVER CONNECTOR)
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Check the connection condition of the motor resolver connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.
| OK |
|---|
| - The connector is connected securely. |
| - The terminals are not deformed and are connected securely. |
| - No water or foreign matter in the connector. |
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
| B |
|
CONNECT SECURELY |
| C |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| A |
|
INSPECT HYBRID VEHICLE TRANSAXLE ASSEMBLY (MOTOR RESOLVER)
| Result | |||
|---|---|---|---|
|
Disconnect the C44 motor resolver connector.
| *a | Component without harness connected (Motor Resolver (Hybrid Vehicle Transaxle Assembly)) |
Measure the resistance according to the value(s) in the table below.
| Standard Resistance (Check for Open) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Standard Resistance (Check for Short) | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Tech Tips
The motor resolver is not available as a supply part. If it requires replacement, replace the hybrid vehicle transaxle assembly.
Reconnect the C44 motor resolver connector.
| Result | |||
|---|---|---|---|
|
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| NG |
|
REPLACE HYBRID VEHICLE TRANSAXLE ASSEMBLY Click here |
CHECK CONNECTOR CONNECTION CONDITION (REAR MOTOR RESOLVER CONNECTOR)
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
Check the connection condition of the rear motor resolver connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.
| OK |
|---|
| - The connector is connected securely. |
| - The terminals are not deformed and are connected securely. |
| - No water or foreign matter in the connector. |
| Result | ||||||||
|---|---|---|---|---|---|---|---|---|
|
| B |
|
CONNECT SECURELY |
| C |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| A |
|
INSPECT REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY (REAR MOTOR RESOLVER)
| Result | |||
|---|---|---|---|
|
Disconnect the R3 rear motor resolver connector.
| *a | Component without harness connected (Rear Motor Resolver (Rear Traction Motor with Transaxle Assembly)) |
Measure the resistance according to the value(s) in the table below.
| Standard Resistance (Check for Open) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Standard Resistance (Check for Short) | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Tech Tips
The rear motor resolver is not available as a supply part. If it requires replacement, replace the rear traction motor with transaxle assembly.
Reconnect the R3 rear motor resolver connector.
| Result | |||
|---|---|---|---|
|
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| NG |
|
REPLACE REAR TRACTION MOTOR WITH TRANSAXLE ASSEMBLY Click here |