Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM1000000026QHY
Model Year Start: 2023 Model: Corolla HV Prod Date Range: [09/2022 -           ]
Title: HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): P0C5516,...,P0C5F17; Drive Motor "B" Position Sensor Circuit "A" Circuit Voltage Below Threshold; 2023 - 2025 MY Corolla HV [09/2022 -        ]

DTC

P0C5516

Drive Motor "B" Position Sensor Circuit "A" Circuit Voltage Below Threshold

DTC

P0C5517

Drive Motor "B" Position Sensor Circuit "A" Circuit Voltage Above Threshold

DTC

P0C5F16

Drive Motor "B" Position Sensor Circuit "B" Circuit Voltage Below Threshold

DTC

P0C5F17

Drive Motor "B" Position Sensor Circuit "B" Circuit Voltage Above Threshold

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:

Internal inverter malfunction

  • Inverter with converter assembly internal circuit malfunction

Inverter low-voltage circuit malfunction

  • The connectors are not connected properly

HINT:

If any of these DTCs is output, malfunction of the motor generator control ECU circuit board or poor connection of low-voltage connectors is suspected. It is not necessary to inspect the motor resolver.

DESCRIPTION

Refer to the system description for the Rear Motor Resolver Circuit.

Click here 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): Rear Motor Resolver Circuit+

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

Note

P0C5516

Drive Motor "B" Position Sensor Circuit "A" Circuit Voltage Below Threshold

The value of the rear motor resolver sin phase signal is lower than the low side threshold.

(1 trip detection logic)
  • Inverter with converter assembly
  • Wire harness or connector

Comes on

Master Warning:

Comes on

SAE Code:

P0C57

P0C5517

Drive Motor "B" Position Sensor Circuit "A" Circuit Voltage Above Threshold

The value of the rear motor resolver sin phase signal is higher than the high side threshold.

(1 trip detection logic)
  • Inverter with converter assembly
  • Wire harness or connector

Comes on

Master Warning:

Comes on

SAE Code:

P0C58

P0C5F16

Drive Motor "B" Position Sensor Circuit "B" Circuit Voltage Below Threshold

The value of the rear motor resolver cos phase signal is lower than the low side threshold.

(1 trip detection logic)
  • Inverter with converter assembly
  • Wire harness or connector

Comes on

Master Warning:

Comes on

SAE Code:

P0C61

P0C5F17

Drive Motor "B" Position Sensor Circuit "B" Circuit Voltage Above Threshold

The value of the rear motor resolver cos phase signal is higher than the high side threshold.

(1 trip detection logic)
  • Inverter with converter assembly
  • Wire harness or connector

Comes on

Master Warning:

Comes on

SAE Code:

P0C62

MONITOR DESCRIPTION

The motor generator control ECU monitors the rear motor resolver output signal. If the motor generator control ECU detects output signals that are out of the normal range or specification, it will conclude that there is a malfunction in the rear motor resolver. If a malfunction is detected, the motor generator control ECU will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs

P0C57 (INF P0C5516): Out of range

P0C58 (INF P0C5517): Out of range

P0C61 (INF P0C5F16): Out of range

P0C62 (INF P0C5F17): Out of range

Required sensors/components

Rear motor resolver

Frequency of operation

Continuous

Duration

TMC's intellectual property

MIL operation

1 driving cycle

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

Motor generator control ECU

DTC P0C57 (INF P0C5516) is not detected

DTC P0C58 (INF P0C5517) is not detected

DTC P0C61 (INF P0C5F16) is not detected

DTC P0C62 (INF P0C5F17) is not detected

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 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): UTILITY

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): DTC CHECK / CLEAR

  1. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  2. Turn the ignition switch off and wait for 2 minutes or more.
  3. Turn the ignition switch to ON and wait for 5 seconds or more. [*1]
  4. Turn the ignition switch to ON (READY) and wait for 5 seconds or more. [*2]
  5. Depress the accelerator pedal of the vehicle with the engine stopped and the shift lever in P to start the engine. [*3]
  6. Drive the vehicle forward with the shift lever in D for 5 m (16 ft.) or more. [*4]
  7. Drive the vehicle backward with the shift lever in R for 5 m (16 ft.) or more. [*5]

    HINT:

    [*1] to [*5]: Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  8. Enter the following menus: Powertrain / Motor Generator / Utility / All Readiness.
  9. 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 the normal judgment procedure again.

CAUTION / NOTICE / HINT

CAUTION:

Refer to the precautions before inspecting high voltage circuit.

Click here 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): PRECAUTION

NOTICE:

  • After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL: BEFORE DISCONNECTING BATTERY

  • When disconnecting and reconnecting the auxiliary battery

    HINT:

    When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

    Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; SETUP: WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL: AUTOMATIC LEARNING CHART 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; SETUP: WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL: AUTOMATIC LEARNING CHART

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.
  • P0C5516, P0C5517, P0C5F16 or P0C5F17 may be output as a result of the malfunctions indicated by the DTCs in table below.
    1. The chart above is listed in inspection order of priority.
    2. Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)

Table 1

Malfunction Content

System

Relevant DTC

Insulation malfunction

Hybrid control system

P1C7C49

Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure

P1C7D49

Hybrid/EV Battery Voltage System Isolation (Hybrid/EV Battery Area) Internal Electronic Failure

P1C7E49

Hybrid/EV Battery Voltage System Isolation (Transaxle Area) Internal Electronic Failure

P1C7F49

Hybrid/EV Battery Voltage System Isolation (Direct Current Area) Internal Electronic Failure

P1C8049

Hybrid/EV Battery Voltage System Isolation (Rear Motor Area) Internal Electronic Failure

Table 2

Malfunction Content

System

Relevant DTC

Microcomputer malfunction

Motor generator control system

P0A1B47

Drive Motor "A" Control Module Watchdog / Safety MC Failure

P0A1C47

Drive Motor "B" Control Module Watchdog / Safety MCU Failure

P0A1C49

Drive Motor "B" Control Module Internal Electronic Failure

P1C2B1C

Drive Motor "A" Control Module A/D Converter Circuit Voltage Out of Range

P1C2B49

Drive Motor "A" Control Module A/D Converter Circuit Internal Electronic Failure

P1C2B71

Drive Motor "A" Control Module A/D Converter Circuit Actuator Stuck

P1C2C1C

Drive Motor "B" Control Module AD Converter Circuit Voltage Out of Range

P1C2C49

Drive Motor "B" Control Module AD Converter Internal Electronic Failure

P1C2C71

Drive Motor "B" Control Module A/D Converter Circuit Actuator Stuck

P1CB138

Drive Motor "B" Position Sensor REF Signal Frequency Incorrect

P310B83

Communication Error from Drive Motor "A" to Drive Motor "B" Value of Signal Protection Calculation Incorrect

P310B86

Communication Error from Drive Motor "A" to Drive Motor "B" Signal (Some Circuit Quantity, Reported via Serial Data) Invalid

P310B87

Communication Error from Drive Motor "A" to Drive Motor "B" Missing Message

Hybrid control system

P0A1B49

Drive Motor "A" Control Module Internal Electronic Failure

Power source circuit malfunction

Motor generator control system

P06B31C

Drive Motor "B" Control Module Position Sensor REF Power Source Circuit Voltage Out of Range

P19F91C

Drive Motor "B" Control Module Offset Power Circuit Voltage Out of Range

PROCEDURE

1.

CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR)

Click here 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): P033500,P033531; Crankshaft Position Sensor "A"+

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
A

REPLACE INVERTER WITH CONVERTER ASSEMBLY

B

CONNECT SECURELY
C

REPAIR OR REPLACE HARNESS OR CONNECTOR