Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000002BENN
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [03/2023 -           ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): P033562; Crankshaft Position Sensor "A" Signal Compare Failure; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [03/2023 -        ]

DTC

P033562

Crankshaft Position Sensor "A" Signal Compare Failure

DESCRIPTION

These DTCs are stored when the engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication do not match.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

P033562

Crankshaft Position Sensor "A" Signal Compare Failure

The engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication do not match. (1-trip detection logic*)
  • SFI system
  • Certification ECU (smart key ECU assembly)
  • Wire harness or connector

DTC Output Confirmation Operation:

  • Allow the engine to idle for 10 seconds or more, and then engine speed of 1000 rpm or more for 20 seconds or more.
  • *: Only detected while a malfunction is present and the ignition switch is ON.

Vehicle Condition and Fail-safe Function when Malfunction Detected

Vehicle Condition when Malfunction Detected

Fail-safe Function when Malfunction Detected
  • When a malfunction occurs and the vehicle speed signal sent via either direct line or CAN communication indicates no vehicle speed, there is no effect on vehicle behavior. (A malfunction is detected after the ignition switch is turned to ON.)
  • When a malfunction occurs and the vehicle speed signal sent via either direct line or CAN communication indicates that the vehicle is moving, the engine cannot be started. However, the engine can be started after the ignition switch has been turned off.
  • When a malfunction occurs and the vehicle speed signal sent via either direct line or CAN communication indicates no vehicle speed, there is no effect on vehicle behavior.
  • When the signal sent via either direct line or CAN communication is malfunctioning and indicates that the vehicle is moving:

    If the following conditions are met, it can be determined that the malfunction is not in the CAN communication system but in the direct line (NE).

    • When the engine switch is pressed, the system controls the engine based on the starter OFF permission flag (perfect injection signal judgment) via CAN communication, causing the engine to stop cranking.
    • When the engine switch is pressed and held, the system controls the engine based on the engine speed signal via CAN communication, causing the engine to stop cranking.

    If the following conditions are met, it can be determined that the malfunction is not in the direct line (NE) but in the CAN communication system.

    • When the engine switch is pressed, the system controls the engine based on the engine speed signal via direct line, causing the engine to stop cranking.
    • When the engine switch is pressed and held, the system controls the engine based on the engine speed signal via direct line, causing the engine to stop cranking.

    If the following conditions are met, it can be determined that there is a malfunction in both the CAN communication system and the direct line (NE).

    • When the engine switch is pressed, the engine stops cranking after 6 seconds.
    • When the engine switch is pressed and held, the engine cranks for up to 30 seconds.

Related Data List and Active Test Items

DTC No.

Data List and Active Test

P033562

Power Source Control

  • Engine Driving Condition (Line)
  • Engine Speed

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins.

    Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Start Key(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

  • The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

  • Before replacing the certification ECU (smart key ECU assembly), refer to Registration.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE

1.

READ VALUE USING GTS (ENGINE DRIVING CONDITION (LINE), ENGINE SPEED)

(a) Read the Data List according to the display on the GTS.

Body Electrical > Power Source Control > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Engine Driving Condition (Line)

Engine state

Stop or Driving

Stop: Engine stopped

Driving: Engine running

-

Body Electrical > Power Source Control > Data List

Tester Display

Engine Driving Condition (Line)

Body Electrical > Power Source Control > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Engine Speed

Engine speed

0 to 16383.75 rpm

Fluctuates in accordance with actual engine speed

-

Body Electrical > Power Source Control > Data List

Tester Display

Engine Speed

OK:

The GTS display changes correctly in response to the engine condition.

OK

GO TO SFI SYSTEM

for M20A-FKS: Click here 2019 - 2025 MY Corolla Corolla Hatchback [06/2018 -        ]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

for G16E-GTS: Click here 2023 - 2025 MY GR Corolla [09/2022 -        ]; G16E-GTS (ENGINE CONTROL): SFI SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

NG

2.

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - ECM)

Pre-procedure1

(a) Disconnect the O175 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the A47*1, A178*2 or A139*3 ECM connector.

  • *1: for M20A-FKS (except K121 CVT)
  • *2: for M20A-FKS (K121 CVT)
  • *3: for G16E-GTS

Procedure1

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

for M20A-FKS (except K121 CVT):

Tester Connection

Condition

Specified Condition

O175-15 (NE) - A47-16 (NEO)

Always

Below 1 Ω

O175-15 (NE) or A47-16 (NEO) - Other terminals and body ground

Always

10 kΩ or higher

for M20A-FKS (K121 CVT):

Tester Connection

Condition

Specified Condition

O175-15 (NE) - A178-66 (NEO)

Always

Below 1 Ω

O175-15 (NE) or A178-66 (NEO) - Other terminals and body ground

Always

10 kΩ or higher

for G16E-GTS:

Tester Connection

Condition

Specified Condition

O175-15 (NE) - A139-16 (NEO)

Always

Below 1 Ω

O175-15 (NE) or A139-16 (NEO) - Other terminals and body ground

Always

10 kΩ or higher

Post-procedure1

(d) None

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

Pre-procedure1

(a) Connect the O175 certification ECU (smart key ECU assembly) connector.

(b) Connect the A47*1, A178*2 or A139*3 ECM connector.

  • *1: for M20A-FKS (except K121 CVT)
  • *2: for M20A-FKS (K121 CVT)
  • *3: for G16E-GTS

Procedure1

(c) Using an oscilloscope, check the engine speed input signal waveform at the terminal of the certification ECU (smart key ECU assembly).

OK:

Tester Connection

Condition

Specified Condition

O175-15 (NE) - Body ground

Engine stopped

No pulse generation

O175-15 (NE) - Body ground

Engine running

Pulse generation

Result:

Proceed to

OK

NG

*a

Component with harness connected

(Certification ECU (Smart Key ECU Assembly))

Post-procedure1

(d) None

OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

GO TO SFI SYSTEM

for M20A-FKS: Click here 2019 - 2025 MY Corolla Corolla Hatchback [06/2018 -        ]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

for G16E-GTS: Click here 2023 - 2025 MY GR Corolla [09/2022 -        ]; G16E-GTS (ENGINE CONTROL): SFI SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING