Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000014UJM
Model Year Start: 2018 Model: Camry Prod Date Range: [06/2017 - 08/2022]
Title: NETWORKING: LIN COMMUNICATION SYSTEM: TERMINALS OF ECU; 2018 - 2022 MY Camry [06/2017 - 08/2022]

TERMINALS OF ECU

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

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

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

HINT:

Measure the values on the wire harness side with the connectors disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

MB-11 (GND1) - Body ground

-

Ground

Always

Below 1 Ω

MB-31 (BECU) - Body ground

-

Battery power supply

Always

11 to 14 V

MB-30 (ACC) - Body ground

-

ACC power supply

Ignition switch ACC

11 to 14 V

Ignition switch off

Below 1 V

MB-32 (IG) - Body ground

-

IG power supply

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1 V

(c) Reconnect the MB main body ECU (multiplex network body ECU) connector.

(d) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

3D-25 - Body ground

LA-BE - Body ground

LIN communication line

Ignition switch ON

Pulse generation

3B-17 - Body ground*

L - Body ground

LIN communication line

Ignition switch ON

Pulse generation

  • *: w/ Sliding Roof System or Panoramic Moon Roof System

CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door)

(a) Disconnect the O6 power window regulator motor assembly (for driver door) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

O6-2 (B) - Body ground

GR - Body ground

Battery power supply

Always

11 to 14 V

O6-1 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the O6 power window regulator motor assembly (for driver door) connector.

(d) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

O6-9 (LIN) - Body ground

G - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Front Passenger Door)

(a) Disconnect the N7 power window regulator motor assembly (for front passenger door) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

N7-2 (B) - Body ground

GR - Body ground

Battery power supply

Always

11 to 14 V

N7-1 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the N7 power window regulator motor assembly (for front passenger door) connector.

(d) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

N7-9 (LIN) - Body ground

P - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear Door RH)

(a) Disconnect the P6 power window regulator motor assembly (for rear door RH) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

P6-2 (B) - Body ground

B - Body ground

Battery power supply

Always

11 to 14 V

P6-1 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the P6 power window regulator motor assembly (for rear door RH) connector.

(d) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

P6-9 (LIN) - Body ground

P - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear Door LH)

(a) Disconnect the Q6 power window regulator motor assembly (for rear door LH) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

Q6-2 (B) - Body ground

B - Body ground

Battery power supply

Always

11 to 14 V

Q6-1 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the Q6 power window regulator motor assembly (for rear door LH) connector.

(d) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

Q6-9 (LIN) - Body ground

P - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

(a) Disconnect the O2 multiplex network master switch assembly connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

O2-11 (B) - Body ground

LA-R - Body ground

Battery power supply

Always

11 to 14 V

O2-12 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the O2 multiplex network master switch assembly connector.

(d) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

O2-17 (LIN1) - Body ground

P - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) (w/ Sliding Roof System)

(a) Disconnect the V2 sliding roof ECU (sliding roof drive gear sub-assembly) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

V2-1 (B) - Body ground

B - Body ground

Battery power supply

Always

11 to 14 V

V2-2 (E) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the V2 sliding roof ECU (sliding roof drive gear sub-assembly) connector.

(d) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

V2-7 (MPX1) - Body ground

LA-P - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) (w/ Panoramic Moon Roof System)

(a) Disconnect the q1 sliding roof ECU (sliding roof drive gear assembly) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

q1-1 (+B) - Body ground

L - Body ground

Battery power supply

Always

11 to 14 V

q1-2 (E) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the q1 sliding roof ECU (sliding roof drive gear assembly) connector.

(d) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

q1-7 (LIN) - Body ground

B - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) (w/ Panoramic Moon Roof System)

(a) Disconnect the q2 roof sunshade ECU (sliding roof drive gear assembly) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

q2-1 (+B) - Body ground

G - Body ground

Battery power supply

Always

11 to 14 V

q2-2 (E) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the q2 roof sunshade ECU (sliding roof drive gear assembly) connector.

(d) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

q2-7 (LIN) - Body ground

B - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Key System)

(a) Disconnect the K62 certification ECU (smart key ECU assembly) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

K62-18 (E) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

K62-4 (+B) - Body ground

W - Body ground

Battery power supply

Always

11 to 14 V

(c) Reconnect the K62 certification ECU (smart key ECU assembly) connector.

(d) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

K62-13 (LIN) - Body ground

B - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) (w/ Smart Key System)

(a) Disconnect the K65 steering lock ECU (steering lock actuator or upper bracket assembly) connector.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

K65-1 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

K65-7 (B) - Body ground

W - Body ground

Battery power supply

Always

11 to 14 V

(c) Reconnect the K65 steering lock ECU (steering lock actuator or upper bracket assembly) connector.

(d) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

K65-5 (LIN) - Body ground

B - Body ground

LIN communication line

Ignition switch ON

Pulse generation