HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): TERMINALS OF ECU; 2021 MY RAV4 HV [08/2020

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM100000001RWHX
Model Year Start: 2021	Model: RAV4 HV	Prod Date Range: [08/2020 - 12/2021]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): TERMINALS OF ECU; 2021 MY RAV4 HV [08/2020 - 12/2021]

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)	Ignition switch off	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) - G47-15 (SG-4)	GR - L	Air conditioner pressure sensor signal	Ignition switch ON (READY) 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
			Ignition switch ON (READY) Air conditioning system operating Refrigerant pressure: Abnormal pressure (less than 196 kPa (2.0 kgf/cm², 28 psi))	Below 0.74 V
			Ignition switch ON (READY) 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
G46-1 (CANL)	-	CAN communication line	-	-
G46-2 (CANH)	-	CAN communication line	-	-
G46-7 (LIN1) - Body ground	BE - Body ground	LIN communication signal	Ignition switch ON	Pulse generation (See waveform 1)
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
G46-21 (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

(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

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

11 to 14 V

(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

HYBRID VEHICLE CONTROL ECU ASSEMBLY

for AWD:
for LITHIUM-ION BATTERY:

MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

w/ Headlight ECU without AFS:
w/ AFS: