Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001D1O2
Model Year Start: 2019 Model: GR Corolla Prod Date Range: [06/2018 - 06/2021]
Title: DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM (for Hatchback, Gasoline Model): TERMINALS OF ECU; 2019 - 2021 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 06/2021]

TERMINALS OF ECU

CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

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

Terminal No. (Symbol)

Wiring Color

Input/Output

Terminal Description

Condition

Specified Condition

Related Data List Item

I86-19 (GND2) - Body ground

W-B - Body ground

-

Ground

Always

Below 1 Ω

-

(c) Reconnect the instrument panel junction block assembly connectors.

(d) Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Input/Output

Terminal Description

Condition

Specified Condition

Related Data List Item

MB-11 (GND1) - Body ground

-

-

Ground

Always

Below 1 Ω

-

MB-30 (ACC) - Body ground

-

Input

ACC power supply

Engine switch on (ACC)

11 to 14 V

ACC SW

Engine switch off

Below 1 V

MB-31 (BECU) - Body ground

-

Input

Battery power supply

Always

11 to 14 V

-

MB-32 (IG) - Body ground

-

Input

IG power supply

Engine switch on (IG)

11 to 14 V

IG SW

Engine switch off

Below 1 V

(e) Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.

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(f) Measure the voltage and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Input/Output

Terminal Description

Condition

Specified Condition

Related Data List Item

I85-1 (FLCY) - Body ground

BR- Body ground

Input

Front door courtesy light switch (for LH) input

Front door LH open → closed

Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*

FL Door Courtesy SW

I85-6 (FRCY) - Body ground

BR - Body ground

Input

Front door courtesy light switch (for RH) input

Front door RH open → closed

Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*

FR Door Courtesy SW

4A-24 (LCTY) - Body ground

BR - Body ground

Input

Rear door courtesy light switch (for LH) input

Rear door LH open → closed

Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*

RL Door Courtesy SW

4E-31 (RCTY) - Body ground

GR - Body ground

Input

Rear door courtesy light switch (for RH) input

Rear door RH open → closed

Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*

RR Door Courtesy SW

4A-34 (BCTY) - Body ground

LG - Body ground

Input

Back door courtesy light switch input

Back door open → closed

Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*

Back Door Courtesy SW

4F-13 (LSFL) - Body ground

L - Body ground

Input

Front door LH unlock detection switch input

Front door LH unlocked → locked

Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*

FL Door Lock Pos

4F-12 (LSFR) - Body ground

BR - Body ground

Input

Front door RH unlock detection switch input

Front door RH unlocked → locked

Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*

FR Door Lock Pos

4F-14 (LSR) - Body ground

LG - Body ground

Input

Rear door LH/RH unlock detection switch input

Rear door LH or RH unlocked → Rear door LH and RH locked

Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*
  • RL-Door Lock Pos SW
  • RR-Door Lock Pos SW

4A-8 (ACT-) - Body ground

W - Body ground

Output

Door lock motor unlock drive output

Door control switch or driver door key cylinder off → on (unlock)

Below 1 V → 11 to 14 V → Below 1 V

-

4A-9 (ACT-) - Body ground

R - Body ground

Output

Door lock motor unlock drive output

Door control switch or driver door key cylinder off → on (unlock)

Below 1 V → 11 to 14 V → Below 1 V

-

4A-6 (ACT+) - Body ground

B - Body ground

Output

Door lock motor lock drive output

Door control switch or driver door key cylinder off → on (lock)

Below 1 V → 11 to 14 V → Below 1 V

-

4F-4 (ACTD) - Body ground

R - Body ground

Output

Door lock motor unlock drive output

Door control switch or driver door key cylinder off → on (unlock)

Below 1 V → 11 to 14 V → Below 1 V

-

4A-20 (TR+) - Body ground

P - Body ground

Output

Back door lock motor drive output

Back door closed → open

Below 1 V → 11 to 14 V → Below 1 V

-

4E-39 (UL1) - Body ground

BR - Body groung

Input

Door control switch assembly unlock switch input

Door control switch assembly unlock switch not pushed → pushed

11 to 14 V → Below 1 V

Door Lock SW-Unlock

4F-16 (L1) - Body ground

LG - Body groung

Input

Door control switch assembly lock switch input

Lock switch of door control switch assembly not pushed → pushed

11 to 14 V → Below 1 V

Door Lock SW-Lock

I84-17 (UL3) - Body ground

V - Body ground

Input

Driver door key-linked unlock input

Driver door key cylinder in neutral position → on (unlock)

11 to 14 V → Below 1 V

D Door Key SW-UL

I84-18 (L2) - Body ground

G - Body ground

Input

Driver door key-linked lock input

Driver door key cylinder in neutral position → on (lock)

11 to 14 V → Below 1 V

Door Key SW-Lock
  • *: Differs depending on the vehicle model