- 15 seconds or more after power switch turned off
- Taillights off
| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM100000001O2VV |
| Model Year Start: 2020 | Model: RAV4 | Prod Date Range: [06/2020 - 12/2021] |
| Title: LIGHTING (EXT): LIGHTING SYSTEM (w/ AFS): TERMINALS OF ECU; 2020 - 2021 MY RAV4 RAV4 HV [06/2020 - 12/2021] | ||
TERMINALS OF ECU
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*1 |
Main Body ECU (Multiplex Network Body ECU) |
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CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
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![2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL](/t3Portal/stylegraphics/info.gif)
(b) Connect the instrument panel junction block assembly connectors.
(c) Measure the voltage and resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
A-32 (IG) - Body ground |
None - Body ground |
Ignition power supply |
Power switch on (IG) |
11 to 14 V |
|
Power switch off |
Below 1 V |
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A-31 (BECU) - Body ground |
None - Body ground |
Auxiliary battery power supply |
Power switch off |
11 to 14 V |
|
A-30 (ACC) - Body ground |
None - Body ground |
ACC power supply |
Power switch on (ACC) |
11 to 14 V |
|
Power switch off |
Below 1 V |
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A-11 (GND1) - Body ground |
None - Body ground |
Ground |
Always |
Below 1 Ω |
(d) Install the main body ECU (multiplex network body ECU).
-
Click here
(e) Measure the voltage and resistance, and check for pulses according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
4A-52 (FFGO) - Body ground |
G - Body ground |
FOG FR relay drive output |
Taillights on, fog light switch in Fr position |
Below 1 V |
|
Taillights on, fog light switch in off position |
11 to 14 V |
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4F-19 - Body ground |
LA-BE - Body ground |
BKUP LP relay drive output |
Power switch off, shift lever not in R |
Below 1 V |
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Power switch on (IG), shift lever in R |
11 to 14 V |
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4F-31 (HRLY) - Body ground |
V - Body ground |
H-LP LH relay drive output |
|
11 to 14 V |
|
Below 1 V |
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4H-30 (TRLY) - Body ground |
LA-R - Body ground |
Taillights and license plate lights drive output |
Light control switch in TAIL or HEAD position |
11 to 14 V |
|
Light control switch DRL OFF |
Below 1 V |
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G43-19 (GND2) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
G45-21 (AHID) - Body ground |
R - Body ground |
Auto high beam switch indicator drive output |
Power switch on (IG), auto high beam switch on |
Below 1 V |
|
Power switch on (IG), auto high beam switch off |
11 to 14 V |
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G44-12 (HRY2) - Body ground |
BE - Body ground |
H-LP RH relay drive output |
|
11 to 14 V |
|
Below 1 V |
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G44-16 (HEAD) - Body ground |
LG - Body ground |
Light control switch HEAD position input |
Light control switch in HEAD position |
Below 1 V |
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Light control switch not in HEAD position |
11 to 14 V |
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G44-23 (CLTB) - G44-25 (CLTE) |
BE - GR |
Automatic light control sensor power supply output |
Power switch on (IG) |
11 to 14 V |
|
G44-24 (CLTS) - Body ground |
R - Body ground |
Automatic light control sensor signal input |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation (See waveform 1) |
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G44-25 (CLTE) - Body ground |
GR - Body ground |
Automatic light control sensor ground |
Power switch on (IG) |
Below 1 Ω |
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G44-26 (AHBI) - Body ground |
G - Body ground |
Auto high beam switch signal input |
Auto high beam switch on |
Below 1 V |
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Auto high beam switch off |
11 to 14 V |
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G45-2 (MILE) - Body ground |
L - Body ground |
Outside mirror foot lights drive output |
Outside mirror foot light illuminates |
11 to 14 V |
|
Outside mirror foot light off |
Below 3 V |
(1) Waveform 1
|
Item |
Content |
|---|---|
|
Tester Connection |
G44-24 (CLTS) - Body ground |
|
Tool setting |
2 V/DIV., 10 ms./DIV. |
|
Condition |
Power switch on (IG) |
HINT:
The communication waveform changes according to the surrounding brightness.
CHECK HEADLIGHT ECU SUB-ASSEMBLY LH
(a) Disconnect the A11 headlight ECU sub-assembly LH 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 |
|---|---|---|---|---|
|
A11-4 (IG) - Body ground |
B - Body ground |
Ignition power supply |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
11 to 14 V |
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|
A11-12 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
A11-13 (ECUB) - Body ground |
B - Body ground |
Auxiliary battery power supply |
|
Below 1 V |
|
11 to 14 V |
(c) Connect the A11 headlight ECU sub-assembly LH connector.
HINT:
- Since the A11 headlight ECU sub-assembly LH connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.
- Since the B headlight ECU sub-assembly LH connectors are connected inside the headlight assembly, the voltage and pulses cannot be checked directly. The values listed are for reference only.
(d) Measure the voltage and resistance, and check of pulses according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
A11-11 (TNS) - Body ground |
LA-LG - Body ground |
Front turn signal light LH signal input |
Power switch on (IG), front turn signal light LH off |
Below 1 V |
|
Power switch on (IG), front turn signal light LH blinking |
11 to 14 V ←→ Below 1 V |
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|
A11-16 (SBR) - A11-15 (SGR) |
LG - R |
Rear height control sensor sub-assembly LH power supply |
Power switch on (IG) |
4.75 to 5.25 V |
|
A11-17 (SHRL) - A11-15 (SGR) |
GR - R |
Rear height control sensor sub-assembly LH signal input |
Power switch on (IG), vehicle unloaded, vehicle stopped |
Approximately 2.5 V (value decreases as the front of the vehicle is raised) |
|
A11-15 (SGR) - Body ground |
R - Body ground |
Rear height control sensor sub-assembly LH ground |
Power switch on (IG) |
Below 1 Ω |
|
A11-19 (LINS) - Body ground |
L - Body ground |
LIN communication line |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation |
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A11-20 (LINL) - Body ground |
R - Body ground |
LIN communication line |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation |
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|
A11-23 (CANL) - Body ground |
W - Body ground |
CAN communication line |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation |
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A11-24 (CANH) - Body ground |
P - Body ground |
CAN communication line |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation |
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|
B-2 (LOLED2) - B-3 (LOLED1) |
- |
Low beam headlight LH drive output |
Low beam headlight LH off |
Below 1 V |
|
Low beam headlight LH on |
10.7 to 14.8 V |
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B-3 (LOLED1) - Body ground |
- |
Low beam headlight LH drive ground |
Low beam headlight LH on |
Below 1 Ω |
|
B-4 (FANB) - B-14 (FANG) |
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Headlight fan LH power source |
Low beam headlight LH off |
Below 1 V |
|
Low beam headlight LH on |
4.5 to 5.5 V |
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B-14 (FANG) - Body ground |
- |
Headlight fan LH ground |
Low beam headlight LH on |
Below 1 Ω |
|
B-9 (ACTBI) - B-17 (ACTGI) |
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Headlight swivel and leveling motor LH power source |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
11 to 14 V |
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B-17 (ACTGI) - Body ground |
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Headlight swivel and leveling motor LH ground |
Power switch on (IG) |
Below 1 Ω |
|
B-20 (TURN+) - B-13 (TURN-) |
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Front turn signal light LH signal output |
Power switch on (IG), front turn signal light LH off |
Below 1 V |
|
Power switch on (IG), front turn signal light LH blinking |
11 to 14 V ←→ Below 1 V |
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B-13 (TURN-) - Body ground |
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Front turn signal light LH ground |
Power switch on (IG), front turn signal light LH blinking |
Below 1 Ω |
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B-10 (DRL/CLL+) - B-1 (DRL/CLL-) |
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Parking light/daytime running light LH power source |
Parking light and daytime running light LH off |
Below 1 V |
|
Parking light and daytime running light LH on |
11 to 14 V |
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B-1 (DRL/CLL-) - Body ground |
- |
Parking light/daytime running light LH ground |
Parking light and daytime running light LH on |
Below 1 Ω |
|
B-15 (FANP) - B-14 (FANG) |
- |
Headlight fan LH control signal input |
Low beam headlight LH off |
Below 1 V |
|
Low beam headlight LH on |
Pulse generation |
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C-7 (CLL+) - B-1 (DRL/CLL-) |
- |
Parking light/daytime running light LH control signal output |
Parking light and daytime running light LH off |
Below 1 V |
|
Parking light and daytime running light LH on |
11 to 14 V |
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|
B-18 (FSML+) - B-12 (FSML-) |
- |
Front side marker light LH drive output |
Front side marker light LH off |
Below 1 V |
|
Front side marker light LH on |
11 to 14 V |
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B-12 (FSML-) - Body ground |
- |
Front side marker light LH ground |
Front side marker light LH on |
Below 1 Ω |
|
B-19 (HI SOL+) - B-11 (HI SOL-) |
- |
High beam headlight LH drive output |
High beam headlight LH off |
Below 1 V |
|
High beam headlight LH on |
11 to 14 V |
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B-11 (HI SOL-) - Body ground |
- |
High beam headlight LH ground |
High beam headlight LH on |
Below 1 Ω |
|
C-4 (LINSI) - Body ground |
- |
LIN communication line |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation |
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C-13 (LINLI) - Body ground |
- |
LIN communication line |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation |
CHECK HEADLIGHT ECU SUB-ASSEMBLY RH
(a) Disconnect the A12 headlight ECU sub-assembly RH 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 |
|---|---|---|---|---|
|
A12-4 (IG) - Body ground |
B - Body ground |
Ignition power supply |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
11 to 14 V |
|||
|
A12-12 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
A12-13 (ECUB) - Body ground |
BE - Body ground |
Auxiliary battery power supply |
|
Below 1 V |
|
11 to 14 V |
(c) Connect the A12 headlight ECU sub-assembly RH connector.
HINT:
- Since the A12 headlight ECU sub-assembly RH connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.
- Since the B headlight ECU sub-assembly RH connectors are connected inside the headlight assembly, the voltage and pulses cannot be checked directly. The values listed are for reference only.
(d) Measure the voltage and resistance, and check of pulses according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
A12-11 (TNS) - Body ground |
LA-G - Body ground |
Front turn signal light RH signal input |
Power switch on (IG), front turn signal light RH off |
Below 1 V |
|
Power switch on (IG), front turn signal light RH blinking |
11 to 14 V ←→ Below 1 V |
|||
|
A12-19 (LINS) - Body ground |
L - Body ground |
LIN communication line |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation |
|||
|
A12-20 (LINL) - Body ground |
R - Body ground |
LIN communication line |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation |
|||
|
A12-23 (CANL) - Body ground |
W - Body ground |
CAN communication line |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation |
|||
|
A12-24 (CANH) - Body ground |
L - Body ground |
CAN communication line |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation |
|||
|
B-2 (LOLED2) - B-3 (LOLED1) |
- |
Low beam headlight RH drive output |
Low beam headlight RH off |
Below 1 V |
|
Low beam headlight RH on |
10.7 to 14.8 V |
|||
|
B-3 (LOLED1) - Body ground |
- |
Low beam headlight RH ground |
Low beam headlight RH on |
Below 1 Ω |
|
B-4 (FANB) - B-14 (FANG) |
- |
Headlight fan RH power source |
Low beam headlight RH off |
Below 1 V |
|
Low beam headlight RH on |
4.5 to 5.5 V |
|||
|
B-14 (FANG) - Body ground |
- |
Headlight fan RH ground |
Low beam headlight RH on |
Below 1 Ω |
|
B-9 (ACTBI) - B-17 (ACTGI) |
- |
Headlight swivel and leveling motor RH power source |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
11 to 14 V |
|||
|
B-17 (ACTGI) - Body ground |
- |
Headlight swivel and leveling motor RH ground |
Power switch on (IG) |
Below 1 Ω |
|
B-20 (TURN+) - B-13 (TURN-) |
- |
Front turn signal light RH signal output |
Power switch on (IG), front turn signal light RH off |
Below 1 V |
|
Power switch on (IG), front turn signal light RH blinking |
11 to 14 V ←→ Below 1 V |
|||
|
B-13 (TURN-) - Body ground |
- |
Front turn signal light RH ground |
Power switch on (IG), front turn signal light RH blinking |
Below 1 Ω |
|
B-10 (DRL/CLL+) - B-1 (DRL/CLL-) |
- |
Parking light/daytime running light RH power source |
Parking light and daytime running light RH off |
Below 1 V |
|
Parking light and daytime running light RH on |
11 to 14 V |
|||
|
B-1 (DRL/CLL-) - Body ground |
- |
Parking light/daytime running light RH ground |
Parking light and daytime running light RH on |
Below 1 Ω |
|
B-15 (FANP) - B-14 (FANG) |
- |
Headlight fan RH control signal input |
Low beam headlight RH off |
Below 1 V |
|
Low beam headlight RH on |
Pulse generation |
|||
|
C-7 (CLL+) - B-1 (DRL/CLL-) |
- |
Parking light/daytime running light RH control signal output |
Parking light and daytime running light RH off |
Below 1 V |
|
Parking light and daytime running light RH on |
11 to 14 V |
|||
|
B-18 (FSML+) - B-12 (FSML-) |
- |
Front side marker light RH drive output |
Front side marker light RH off |
Below 1 V |
|
Front side marker light RH on |
11 to 14 V |
|||
|
B-12 (FSML-) - Body ground |
- |
Front side marker light RH ground |
Front side marker light RH on |
Below 1 Ω |
|
B-19 (HI SOL+) - B-11 (HI SOL-) |
- |
High beam headlight RH drive output |
High beam headlight RH off |
Below 1 V |
|
High beam headlight RH on |
11 to 14 V |
|||
|
B-11 (HI SOL-) - Body ground |
- |
High beam headlight RH ground |
High beam headlight RH on |
Below 1 Ω |
|
C-4 (LINSI) - Body ground |
- |
LIN communication line |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation |
|||
|
C-13 (LINLI) - Body ground |
- |
LIN communication line |
Power switch off |
Below 1 V |
|
Power switch on (IG) |
Pulse generation |
CHECK COMBINATION METER ASSEMBLY
Click here
CHECK FORWARD RECOGNITION CAMERA
Click here
CHECK STEERING SENSOR
Click here
CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY
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for AWD with NICKEL METAL HYDRIDE BATTERY:
Click here
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for LITHIUM-ION BATTERY:
Click here
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