| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001H55J |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [02/2019 - 12/2021] |
| Title: LIGHTING (EXT): LIGHTING SYSTEM (w/o Headlight ECU): High Beam Headlight Circuit; 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021] | ||
|
High Beam Headlight Circuit |
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the high beam headlights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
Check the operation of the low beam headlights. If the low beam headlights do not operate normally, refer to Problem Symptoms Table.
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![2019 - 2020 MY RAV4 RAV4 HV [02/2019 - 08/2020]; LIGHTING (EXT): LIGHTING SYSTEM (w/o Headlight ECU): PROBLEM SYMPTOMS TABLE](/t3Portal/stylegraphics/info.gif)
- Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
PROCEDURE
|
1. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Main Body > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Head Light Hi |
High beam headlights |
OFF or ON |
- |
Body Electrical > Main Body > Active Test
|
Tester Display |
|---|
|
Head Light Hi |
OK:
High beam headlights illuminate.
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (DIM RELAY - HEADLIGHT UNIT ASSEMBLY LH) |
(a) Remove the DIM relay.
(b) Disconnect the A62 headlight unit assembly LH connector.
(c) Disconnect the A61 headlight unit assembly RH connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3 (DIM relay) - A62-4 (HI) |
Always |
Below 1 Ω |
|
3 (DIM relay) or A62-4 (HI) - Body ground |
Always |
10 kΩ or higher |
|
3 (DIM relay) or A61-4 (HI) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
INSPECT DIM RELAY |
(a) Remove the DIM relay.
(b) Inspect the DIM relay.
Click here
| NG |
|
REPLACE DIM RELAY |
|
|
4. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE - DIM RELAY) |
(a) Remove the DIM relay.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
2 (DIM relay) - Body ground |
Ignition switch off |
11 to 14 V |
|
5 (DIM relay) - Body ground |
Ignition switch off |
11 to 14 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
CHECK HARNESS AND CONNECTOR (DIM RELAY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Remove the DIM relay.
(b) Disconnect the G44 main body ECU (multiplex network body ECU) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 (DIM relay) - G44-13 (DIM) |
Always |
Below 1 Ω |
|
1 (DIM relay) or G44-13 (DIM) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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