Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000028DBI
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: LIGHTING (INT): LIGHTING SYSTEM: Door Unlock Detection Switch Circuit; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]

Door Unlock Detection Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) detects the condition of each door unlock detection switch.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*

for Gasoline Model: 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

for HV Model: Click here 2023 - 2025 MY Corolla Corolla HV [09/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION

  • *: w/ Smart Key System

PROCEDURE

1.

CONFIRM MODEL

(a) Choose the model to be inspected.

Result

Proceed to

for Sedan without Unlock Detection Switch (for Rear Door Lock with Motor Assembly)

A

w/ Unlock Detection Switch (for Rear Door Lock with Motor Assembly)

B
B

GO TO STEP 3

A

2.

READ VALUE USING TECHSTREAM

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

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Door Lock Position Switch Status

Front door RH unlock detection switch signal

Lock or Unlock

Lock: Front door RH locked

Unlock: Front door RH unlocked

-

FL Door Lock Position Switch Status

Front door LH unlock detection switch signal

Lock or Unlock

Lock: Front door LH locked

Unlock: Front door LH unlocked

-

Body Electrical > Main Body > Data List

Tester Display

FR Door Lock Position Switch Status

FL Door Lock Position Switch Status

OK:

Normal conditions listed above are displayed.

Result

Proceed to

OK

A

NG ("FL Door Lock Position Switch Status" is not normal)

B

NG ("FR Door Lock Position Switch Status" is not normal)

C
A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - 03/2023]; LIGHTING (INT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2023 -        ]; LIGHTING (INT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE

B

GO TO STEP 4

C

GO TO STEP 6

3.

READ VALUE USING TECHSTREAM

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

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Door Lock Position Switch Status

Front door RH unlock detection switch signal

Lock or Unlock

Lock: Front door RH locked

Unlock: Front door RH unlocked

-

FL Door Lock Position Switch Status

Front door LH unlock detection switch signal

Lock or Unlock

Lock: Front door LH locked

Unlock: Front door LH unlocked

-

RR Door Lock Position Switch Status

Rear door RH unlock detection switch signal

Lock or Unlock

Lock: Rear door RH locked

Unlock: Rear door RH unlocked

-

RL Door Lock Position Switch Status

Rear door LH unlock detection switch signal

Lock or Unlock

Lock: Rear door LH locked

Unlock: Rear door LH unlocked

-

Body Electrical > Main Body > Data List

Tester Display

FR Door Lock Position Switch Status

FL Door Lock Position Switch Status

RR Door Lock Position Switch Status

RL Door Lock Position Switch Status

OK:

Normal conditions listed above are displayed.

Result

Proceed to

OK

A

NG ("FL Door Lock Position Switch Status" is not normal)

B

NG ("FR Door Lock Position Switch Status" is not normal)

C

NG ("RL Door Lock Position Switch Status" is not normal)

D

NG ("RR Door Lock Position Switch Status" is not normal)

E
A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - 03/2023]; LIGHTING (INT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2023 -        ]; LIGHTING (INT): LIGHTING SYSTEM: PROBLEM SYMPTOMS TABLE

C

GO TO STEP 6

D

GO TO STEP 8

E

GO TO STEP 10

B

4.

INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH

(a) Inspect the front door lock with motor assembly LH.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; DOOR LOCK: FRONT DOOR LOCK: INSPECTION

NG

REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH

OK

5.

CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L4-8 (LSSR) - I85-9 (LSFL)

Always

Below 1 Ω

L4-8 (LSSR) or I85-9 (LSFL) - Body ground

Always

10 kΩ or higher

L4-10 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.

INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH

(a) Inspect the front door lock with motor assembly RH.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; DOOR LOCK: FRONT DOOR LOCK: INSPECTION

NG

REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH

OK

7.

CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K5-7 (LSSR) - I85-3 (LSFR)

Always

Below 1 Ω

K5-7 (LSSR) or I85-3 (LSFR) - Body ground

Always

10 kΩ or higher

K5-5 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.

INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY LH

(a) Inspect the rear door lock with motor assembly LH.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; DOOR LOCK: REAR DOOR LOCK: INSPECTION

NG

REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY LH

OK

9.

CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK WITH MOTOR ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

N1-6 (LSSR) - I85-10 (LSWL)

Always

Below 1 Ω

N1-6 (LSSR) or I85-10 (LSWL) - Body ground

Always

10 kΩ or higher

N1-9 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

10.

INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY RH

(a) Inspect the rear door lock with motor assembly RH.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; DOOR LOCK: REAR DOOR LOCK: INSPECTION

NG

REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY RH

OK

11.

CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK WITH MOTOR ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND)

(a) Disconnect the I85 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

M1-6 (LSSR) - I86-23 (LSWR)

Always

Below 1 Ω

M1-6 (LSSR) or I86-23 (LSWR) - Body ground

Always

10 kΩ or higher

M1-9 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR