Last Modified: 05-08-2025 6.11:8.1.0 Doc ID: RM100000001FPGS
Model Year Start: 2019 Model: RAV4 HV Prod Date Range: [11/2018 - 02/2019]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): TERMINALS OF ECU; 2019 MY RAV4 HV [11/2018 - 02/2019]

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)

Power switch off

11 to 14 V

G46-6 (IG+) - Body ground

GR - Body ground

Power source (IG)

Power switch on (IG)

11 to 14 V

Power 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
  • Power switch on (IG) (do not start the engine and electric motor)
  • Ambient temperature: 25°C (77°F)

1.05 to 1.45 V
  • Power switch on (IG) (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
  • Power switch on (IG)
  • Cabin temperature: 25°C (77°F)

1.05 to 1.45 V
  • Power switch on (IG)
  • Cabin temperature: 40°C (104°F)

0.64 to 0.87 V

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

GR - L

Air conditioner pressure sensor signal
  • Power switch on (READY)
  • Air conditioning system operating
  • Refrigerant pressure: Normal pressure (below 3025 kPa [30.8 kgf/cm2, 439 psi] and higher than 176 kPa [1.8 kgf/cm2, 26 psi])

0.74 to 4.61 V
  • Power switch on (READY)
  • Air conditioning system operating
  • Refrigerant pressure: Abnormal pressure (less than 176 kPa (1.8 kgf/cm2, 26 psi))

Below 0.74 V
  • Power switch on (READY)
  • Air conditioning system operating
  • Refrigerant pressure: Abnormal pressure (more than 3025 kPa (30.8 kgf/cm2, 439 psi))

4.61 V or higher

G47-11 (S5-3) - Body ground

L - Body ground

Power source of sensor

Power switch off → on (IG)

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

G46-1 (CANL)

-

CAN communication line

-

-

G46-2 (CANH)

-

CAN communication line

-

-

G46-7 (LIN1) - Body ground

BE - Body ground

LIN communication signal

Power switch on (IG)

Pulse generation

(See waveform 1)

G46-11 (ECOS) - Body ground

W - Body ground

Integration control and panel assembly (ECO switch) signal
  • Power switch on (IG)
  • Integration control and panel assembly (ECO switch) Off → On

11 to 14 V → Below 1 V

G46-21 (BLW) - Body ground

Y - Body ground

Blower motor speed control signal
  • Power switch on (IG)
  • 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

Power switch on (IG)

Pulse generation

(See waveform 3)

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

-

Power supply for BUS IC

Power 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
  • Power switch on (IG)
  • Evaporator temperature: 0°C (32°F)

1.7 to 2.1 V
  • Power switch on (IG)
  • Evaporator temperature: 15°C (59°F)

0.9 to 1.3 V

(e) Waveform 1:

Item

Content

Terminal No.

G46-7 (LIN1) - Body ground

Tool Setting

2 V/DIV., 20 μs./DIV.

Vehicle Condition

Power switch on (IG)

(f) Waveform 2:

Item

Content

Terminal No.

G46-21(BLW) - Body ground

Tool Setting

1 V/DIV., 500 μs./DIV.

Vehicle Condition
  • Power switch on (IG)
  • 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

Power switch on (IG)

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)

Power switch off

Below 1 V

Power switch on (IG)

11 to 14 V

(c) Reconnect the G24 air conditioning control 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

Power switch on (IG)

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

Power switch on (IG)

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