| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001EKMZ |
| Model Year Start: 2019 | Model: RAV4 HV | Prod Date Range: [11/2018 - 08/2020] |
| Title: HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for 2WD with NICKEL METAL HYDRIDE BATTERY): P1CAC49,P1C641F,P1CAF38; Generator Position Sensor Internal Electronic Failure; 2019 - 2020 MY RAV4 HV [11/2018 - 08/2020] | ||
|
DTC |
P1CAC49 |
Generator Position Sensor Internal Electronic Failure |
|
DTC |
P1C641F |
Generator Control Module Circuit Intermittent |
|
DTC |
P1CAF38 |
Generator Position Sensor REF Signal Cycle Malfunction Signal Frequency Incorrect |
DESCRIPTION
The motor generator control ECU (MG ECU), which is built into the inverter with converter assembly, monitors its internal operation and detects malfunctions.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
|---|---|---|---|---|---|
|
P1C641F |
Generator Control Module Circuit Intermittent |
Excitation signal (REF signal) for resolver angle detection cycle malfunction detected when DTC P0C7917, P0D3319, P1C5D19 or P1C5F19 is stored. (1 trip detection logic) |
|
Does not come on |
Master Warning: Does not come on |
|
P1CAC49 |
Generator Position Sensor Internal Electronic Failure |
Generator resolver angle malfunction: The difference between the resolver angle for control and estimated resolver angle exceeds the allowable limit. (1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
|
P1CAF38 |
Generator Position Sensor REF Signal Cycle Malfunction Signal Frequency Incorrect |
Resolver REF signal cycle malfunction: Excitation signal (REF signal) for resolver angle detection cycle malfunction (1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
Related Data List
|
DTC No. |
Data List |
|---|---|
|
P1CAC49 |
Generator Revolution |
|
P1CAF38 |
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.
Click here
![2019 - 2020 MY RAV4 HV [11/2018 - 08/2020]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for 2WD with NICKEL METAL HYDRIDE BATTERY): UTILITY](/t3Portal/stylegraphics/info.gif)
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 2 minutes or more.
- Turn the power switch on (IG) and turn the Techstream on.
-
With power switch on (IG) and wait for 5 seconds or more.*
*: Lightly wiggle the connectors and wire harnesses up and down and right and left.
- Turn the power switch on (READY) and wait for 5 seconds or more.
- Depress the accelerator pedal of the vehicle with the engine stopped and shift lever in P to start the engine.
- Keep the engine running for 5 seconds or more.
- 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 / 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
CAUTION / NOTICE / HINT
CAUTION:
-
Before the following operations are conducted, take precautions to prevent electric shock by turning the power 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.
Click here
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 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
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. |
CHECK DTC OUTPUT (MOTOR GENERATOR) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.
(d) Check for DTCs.
Powertrain > Motor Generator > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
P1CAC49, P1CAF38 or P1C641F only is output, or DTCs except the ones in the table below are also output. |
A |
|
Any of the following DTCs are also output. |
B |
|
Relevant DTC |
|
|---|---|
|
P0A3F16 |
Drive Motor "A" Position Sensor Circuit Voltage Below Threshold |
|
P0A4B16 |
Generator Position Sensor Circuit Voltage Below Threshold |
|
P0C6413 |
Generator Position Sensor Circuit "A" Circuit Open |
|
P0C6416 |
Generator Position Sensor Circuit "A" Circuit Voltage Below Threshold |
|
P0C6417 |
Generator Position Sensor Circuit "A" Circuit Voltage Above Threshold |
|
P0C6913 |
Generator Position Sensor Circuit "B" Circuit Open |
|
P0C6916 |
Generator Position Sensor Circuit "B" Circuit Voltage Below Threshold |
|
P0C6917 |
Generator Position Sensor Circuit "B" Circuit Voltage Above Threshold |
(e) Turn the power switch off.
| B |
|
|
|
2. |
CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR) |
Click here
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (The connector is not connected securely.) |
B |
|
NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) |
C |
| B |
|
CONNECT SECURELY |
| C |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK GENERATOR RESOLVER CIRCUIT |
Click here
|
|
4. |
CHECK MOTOR RESOLVER CIRCUIT |
Click here
HINT:
If the "Motor Resolver Circuit" inspection results are normal, perform the next step.
| NEXT |
|
|
|