Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM10000000221JI
Model Year Start: 2022 Model: RAV4 Prod Date Range: [12/2021 -           ]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model): TERMINALS OF ECU; 2022 - 2024 MY RAV4 [12/2021 -        ]

TERMINALS OF ECU

*A

w/o Front Seat Heater System

*B

w/ Front Seat Heater System

AIR CONDITIONING AMPLIFIER ASSEMBLY

(a) Disconnect the G46 air conditioning amplifier assembly connector.

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

Terminal No.

(Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

G46-5 (B) - Body ground

G - Body ground

Power source (Back-up)

Always

11 to 14 V

G46-6 (IG+) - Body ground

GR - Body ground

Power source (IG)

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1 V

G46-17 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the G46 air conditioning amplifier assembly connector.

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

Terminal No.

(Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

G47-1 (TAM) - G47-14 (SG-2)

R - R

Ambient temperature sensor signal
  • Ignition switch ON (do not start the engine and electric motor)
  • Ambient temperature: 25°C (77°F)

1.05 to 1.45 V
  • Ignition switch ON (do not start the engine and electric motor)
  • Ambient temperature: 40°C (104°F)

0.64 to 0.87 V

G47-3 (SG-1) - Body ground*

G - Body ground

Ground for sensor

Always

Below 1 Ω

G47-5 (TR) - Body ground*

GR - Body ground

Room temperature sensor signal
  • Ignition switch ON
  • Cabin temperature: 25°C (77°F)

1.05 to 1.45 V
  • Ignition switch ON
  • Cabin temperature: 40°C (104°F)

0.64 to 0.87 V

G47-6 (PRE) - G46-15 (SG-4)

GR - L

Air conditioner pressure sensor signal
  • Engine running
  • Air conditioning system operating
  • Refrigerant pressure: Normal pressure (below 2812 kPa (28.7 kgf/cm2, 408 psi) and higher than 196 kPa (2.0 kgf/cm2, 28 psi))

0.74 to 4.61 V
  • Engine running
  • Air conditioning system operating
  • Refrigerant pressure: Abnormal pressure (less than 196 kPa (2.0 kgf/cm2, 28 psi))

Below 0.74 V
  • Engine running
  • Air conditioning system operating
  • Refrigerant pressure: Abnormal pressure (more than 2812 kPa (28.7 kgf/cm2, 408 psi))

4.61 V or higher

G47-11 (S5-3) - Body ground

L - Body ground

Power source of sensor

Ignition switch off → ON

Below 1 V → 4.75 to 5.25 V

G47-14 (SG-2) - Body ground

R - Body ground

Ground for sensor

Always

Below 1 Ω

G47-15 (SG-4) - Body ground

L - Body ground

Ground for sensor

Always

Below 1 Ω

G46-4 (CANL)

-

CAN communication line

-

-

G46-5 (CANH)

-

CAN communication line

-

-

G46-18 (SOL+) - Body ground

R - Body ground

Compressor solenoid operation signal
  • Engine running
  • Blower switch: LO
  • A/C switch: On

Pulse generation

(See waveform 4)

G46-11 (ECOS) - Body ground

W - Body ground

Integration control and panel assembly (ECO switch) signal
  • Ignition switch ON
  • Integration control and panel assembly (ECO switch) Off → On

11 to 14 V → Below 1 V

G46-7 (LIN1) - Body ground

BE - Body ground

LIN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

G46-21 (BLW) - Body ground

Y - Body ground

Blower motor speed control signal
  • Ignition switch ON
  • Blower switch: LO

Pulse generation

(See waveform 2)

z11-2 (BUS G) - Body ground

-

Ground for BUS IC

Always

Below 1 Ω

z11-3 (BUS) - z11-2 (BUS G)

-

BUS IC control signal

Ignition switch ON

Pulse generation

(See waveform 3)

z11-4 (B BUS) - z11-2 (BUS G)

-

Power supply for BUS IC

Ignition switch off

11 to 14 V

z11-5 (SGA) - Body ground

-

Ground for No. 1 cooler thermistor

Always

Below 1 Ω

z11-6 (TEA) - z11-5 (SGA)

-

No. 1 cooler thermistor signal
  • Ignition switch ON
  • Evaporator temperature: 0°C (32°F)

1.7 to 2.1 V
  • Ignition switch ON
  • Evaporator temperature: 15°C (59°F)

0.9 to 1.3 V
  • *: for Automatic Air Conditioning System

(e) Waveform 1:

Item

Content

Terminal No.

G46-7 (LIN1) - Body ground

Tool Setting

2 V/DIV., 20 μs./DIV.

Vehicle Condition

Ignition switch ON

(f) Waveform 2:

Item

Content

Terminal No.

G46-21 (BLW) - Body ground

Tool Setting

1 V/DIV., 500 μs./DIV.

Vehicle Condition
  • Ignition switch ON
  • Blower switch: LO

(g) Waveform 3:

Item

Content

Terminal No.

z11-3 (BUS) - z11-2 (BUS G)

Tool Setting

2 V/DIV., 20 μs./DIV.

Vehicle Condition

Ignition switch ON

(h) Waveform 4:

Item

Content

Terminal No.

G46-18 (SOL+) - Body ground

Tool Setting

5 V/DIV., 500 μs./DIV.

Condition
  • Engine running
  • Blower switch: LO
  • A/C switch: On

AIR CONDITIONING CONTROL ASSEMBLY

(a) Disconnect the G24 air conditioning control assembly connector.

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

Terminal No.

(Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

G24-13 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

G24-9 (IG+) - Body ground

LA-B - Body ground

Power source (IG)

Ignition switch off

Below 1 V

Ignition switch ON

10.5 to 16 V*1

11 to 14 V*2
  • *1: w/ Stop and Start System
  • *2: w/o Stop and Start System

(c) Reconnect the G24 integration control and panel assembly connector.

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

Terminal No.

(Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

G24-7 (LIN1) - Body ground

LG - Body ground

LIN communication

Ignition switch ON

Pulse generation

(See waveform 1)

(e) Waveform 1:

Item

Content

Terminal No.

G24-7 (LIN1) - Body ground

Tool Setting

2 V/DIV., 20 μs./DIV.

Vehicle Condition

Ignition switch ON

ECM

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