Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001SUO9
Model Year Start: 2021 Model: Camry Prod Date Range: [10/2020 -           ]
Title: DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: TERMINALS OF ECU; 2021 - 2024 MY Camry [10/2020 -        ]

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) Reconnect the instrument panel junction block assembly connectors.

(c) 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

Ignition switch ACC

11 to 14 V

ACC SW

Ignition 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

Ignition switch ON

11 to 14 V

IG SW

Ignition switch off

Below 1 V

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

Click here 2018 - 2024 MY Camry [03/2017 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: INSTALLATION

(e) 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

K52-1 (FLCY) - Body ground

W- 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)*2

FL Door Courtesy SW

K52-6 (FRCY) - Body ground

BE - 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)*2

FR Door Courtesy SW

3D-24 (LCTY) - Body ground

G - 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)*2

RL Door Courtesy SW

3A-31 (RCTY) - Body ground

V - 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)*2

RR Door Courtesy SW

3B-13 (LSFL) - Body ground

W - 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)*2

FL Door Lock Pos SW

3B-12 (LSFR) - Body ground

GR - 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)*2

FR Door Lock Pos SW

3B-14 (LSWL) - Body ground

GR - Body ground

Input

Rear door LH unlock detection switch input

Rear door LH unlocked → locked

Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*2

RL-Door Lock Pos SW

K51-20 (LSWR) - Body ground

L - Body ground

Input

Rear door RH unlock detection switch input

Rear door RH unlocked → locked

Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*2

RR-Door Lock Pos SW

3D-8 (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

-

3D-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

-

3D-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

-

3D-18 (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

-

3B-4 (ACTD) - Body ground

L - 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

-

3B-16 (L1) - Body ground

LG - Body ground

Output

Door control switch assembly input

Door control switch assembly off → on (lock)

Pulse generation → Below 1 V

Door Lock SW-Lock

3A-39 (UL1) - Body ground

GR - Body ground

Input

Door control switch assembly input

Door control switch assembly off → on (unlock)

Pulse generation → Below 1 V

Door Lock SW-Unlock

K53-17 (UL3) - Body ground

BE - 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

K53-18 (L2) - Body ground

LG - 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

3A-41 (KSW) - Body ground*1

V - Body ground

Input

Key unlock warning switch input

No key in ignition key cylinder → Key in ignition key cylinder

11 to 14 V → Below 1 V

Key Unlock Warning SW

3A-7 (GSW) - Body ground

B - Body ground

Input

Airbag sensor signal (collision detection signal)

Ignition switch ON with airbag sensor assembly connector disconnected

4.3 to 5.5 V

-
  • *1: w/o Smart Key System
  • *2: Differs depending on the vehicle model

CHECK AIRBAG SENSOR ASSEMBLY

Click here 2020 - 2022 MY Camry [09/2019 - 08/2022]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: TERMINALS OF ECU 2023 - 2024 MY Camry [08/2022 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: TERMINALS OF ECU