HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model): TERMINALS OF ECU; 2019 MY RAV4 [11/2018

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM100000001FPDY
Model Year Start: 2019	Model: RAV4	Prod Date Range: [11/2018 - 02/2019]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model): TERMINALS OF ECU; 2019 MY RAV4 [11/2018 - 02/2019]

TERMINALS OF ECU

w/o Front Seat Heater System

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
G46-6 (IG+) - Body ground	GR - Body ground	Power source (IG)	Ignition switch off	Below 1 V
G46-17 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

(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
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: 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
G47-5 (TR) - Body ground*	GR - Body ground	Room temperature sensor signal	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 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
			Engine running Air conditioning system operating Refrigerant pressure: Abnormal pressure (less than 176 kPa (1.8 kgf/cm², 26 psi))	Below 0.74 V
			Engine running 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	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
z11-6 (TEA) - z11-5 (SGA)	-	No. 1 cooler thermistor signal	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

(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

for A25A-FKS (w/ Canister Pump Module):
for A25A-FKS (w/o Canister Pump Module):

MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

w/ Headlight ECU:
w/o Headlight ECU: