Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001DYOF
Model Year Start: 2019 Model: Camry Prod Date Range: [08/2018 - 10/2020]
Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: TERMINALS OF ECU; 2019 - 2020 MY Camry [08/2018 - 10/2020]

TERMINALS OF ECU

CHECK ECM (for A25A-FKS)

HINT:

The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance and waveform for each pair of the terminals as displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

Terminal No. (Symbols)

Wiring Color

Terminal Description

Condition

Specified Condition

A24-1 (BATT) - A24-10 (E1)

G - W-B

Battery (for measuring battery voltage and for ECM memory)

Always

11 to 14 V

C101-23 (D) - A24-10 (E1)

R - W-B

D shift position signal

Ignition switch ON, shift lever in D

11 to 14 V

Ignition switch ON, shift lever not in D

Below 1 V

A24-14 (S) - A24-10 (E1)

GR - W-B

S shift position signal

Ignition switch ON, shift lever in S

11 to 14 V

Ignition switch ON, shift lever not in S

Below 1 V

A24-21 (STP) - A24-10 (E1)

SB - W-B

Stop light switch assembly signal

Brake pedal depressed

11 to 14 V

Brake pedal released

Below 1 V

A24-27 (CCS) - A24-28 (ECCS)

R - BE

Steering pad switch circuit

Cruise control switch not pushed

1 MΩ or higher

Cruise control main switch pushed

Below 2.5 Ω

+RES switch pushed

235 to 245 Ω

-SET switch pushed

617 to 643 Ω

CANCEL switch pushed

1509 to 1571 Ω

A24-22 (ST1-) - A24-10 (E1)

LG - W-B

Stop light switch assembly signal

Ignition switch ON, brake pedal depressed

Below 1 V

Ignition switch ON, brake pedal released

11 to 14 V

A24-19 (SFTD) - A24-10 (E1)

W - W-B

Down-shift position switch signal

Ignition switch ON, shift lever in S

11 to 14 V

Ignition switch ON, shift lever in "-"

Below 1 V

A24-20 (SFTU) - A24-10 (E1)

G - W-B

Up-shift position switch signal

Ignition switch ON, shift lever in S

11 to 14 V

Ignition switch ON, shift lever in "+"

Below 1 V

CHECK ECM (for 2GR-FKS)

HINT:

The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance and waveform for each pair of the terminals as displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

Terminal No. (Symbols)

Wiring Color

Terminal Description

Condition

Specified Condition

A21-1 (BATT) - A96-53 (E1)

R - W-B

Battery (for measuring battery voltage and for ECM memory)

Always

11 to 14 V

C96-139 (D) - A96-53 (E1)

R - W-B

D shift position signal

Ignition switch ON, shift lever in D

11 to 14 V

Ignition switch ON, shift lever not in D

Below 1 V

A21-17 (S) - A96-53 (E1)

GR - W-B

S shift position signal

Ignition switch ON, shift lever in S

11 to 14 V

Ignition switch ON, shift lever not in S

Below 1 V

A21-27 (STP) - A96-53 (E1)

SB - W-B

Stop light switch assembly signal

Brake pedal depressed

11 to 14 V

Brake pedal released

Below 1 V

A21-41 (CCS) - A96-53 (E1)

R - W-B

Steering pad switch circuit

Cruise control switch not pushed

1 MΩ or higher

Cruise control main switch pushed

Below 2.5 Ω

+RES switch pushed

235 to 245 Ω

-SET switch pushed

617 to 643 Ω

CANCEL switch pushed

1509 to 1571 Ω

A21-42 (ST1-) - A96-53 (E1)

LG - W-B

Stop light switch assembly signal

Ignition switch ON, brake pedal depressed

Below 1 V

Ignition switch ON, brake pedal released

11 to 14 V

A21-37 (SFTD) - A96-53 (E1)

W - W-B

Down-shift position switch signal

Ignition switch ON, shift lever in S

11 to 14 V

Ignition switch ON, shift lever in "-"

Below 1 V

A21-38 (SFTU) - A96-53 (E1)

G - W-B

Up-shift position switch signal

Ignition switch ON, shift lever in S

11 to 14 V

Ignition switch ON, shift lever in "+"

Below 1 V

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A30-1 (SGND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

A30-2 (CA2L) - A30-1 (SGND)

W - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 2)

A30-3 (CA2H) - A30-1 (SGND)

R - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

A30-5 (CA1P) - A30-1 (SGND)

G - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

A30-6 (CA1N) - A30-1 (SGND)

W - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 2)

A30-8 (IGB) - A30-1 (SGND)

B - W-B

Power source

Ignition switch ON

11 to 14 V

CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY

(a) Waveform 1

(1) CAN communication signal

Item

Content

Tester Connection
  • Between A30-3 (CA2H) and A30-1 (SGND)
  • Between A30-5 (CA1P) and A30-1 (SGND)

Tool Setting

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

(b) Waveform 2

(1) CAN communication signal

Item

Content

Tester Connection
  • Between A30-2 (CA2L) and A30-1 (SGND)
  • Between A30-6 (CA1N) and A30-1 (SGND)

Tool Setting

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

NOTICE:

  • DTCs may be output when connectors are disconnected during inspection. Therefore, be sure to clear the DTCs using the Techstream once the inspection has been completed.
  • Do not apply excessive force to the V6 forward recognition camera connector.

CHECK FORWARD RECOGNITION CAMERA

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

V6-7 (IGB) - V6-10 (GND)

LA-P - W-B

Power source

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1 V

V6-5 (CA1P) - V6-10 (GND)

L - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

V6-11 (CA1N) - V6-10 (GND)

W - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 2)

V6-6 (CANH) - V6-10 (GND)

G - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

V6-12 (CANL) - V6-10 (GND)

W - W-B

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 2)

V6-3 (LKSW) - V6-10 (GND)

V - W-B

Vehicle-to-vehicle distance control switch signal

Ignition switch ON, vehicle-to-vehicle distance control switch not pushed

4.75 to 5.25 V

Ignition switch ON, vehicle-to-vehicle distance control switch pushed

Below 1 V

V6-10 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(a) Waveform 1

(1) CAN communication signal

Item

Content

Tester Connection
  • Between V6-5 (CA1P) and V6-10 (GND)
  • Between V6-6 (CANH) and V6-10 (GND)

Tool Setting

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

(b) Waveform 2

(1) CAN communication signal

Item

Content

Tester Connection
  • Between V6-11 (CA1N) and V6-10 (GND)
  • Between V6-12 (CANL) and V6-10 (GND)

Tool Setting

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.