| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001H55F |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [02/2019 - 12/2021] |
| Title: LIGHTING (EXT): LIGHTING SYSTEM (w/o Headlight ECU): Front Fog Light Circuit; 2019 - 2021 MY RAV4 RAV4 HV [02/2019 - 12/2021] | ||
|
Front Fog Light Circuit |
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the front fog lights.
WIRING DIAGRAM
for Bulb Type:
for LED Type:
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses and bulbs for circuits related to this system before performing the following procedure.
-
w/ Smart Key System:
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 |
|---|---|---|---|
|
Front Fog Light Relay |
Front fog light relay |
OFF or ON |
Light control switch in TAIL position |
Body Electrical > Main Body > Active Test
|
Tester Display |
|---|
|
Front Fog Light Relay |
OK:
Front fog light relay operates. (Front fog lights come on.)
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (FOG FR RELAY - BATTERY) |
(a) Remove the FOG FR relay.
|
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK HARNESS AND CONNECTOR (FOG FR RELAY INPUT VOLTAGE) |
(a) Remove the FOG FR relay.
|
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
| NG |
|
|
|
4. |
INSPECT FOG FR RELAY |
(a) Inspect the FOG FR relay.
Click here
![2019 - 2024 MY RAV4 RAV4 HV [02/2019 - ]; LIGHTING (EXT): RELAY: ON-VEHICLE INSPECTION](/t3Portal/stylegraphics/info.gif)
| OK (for LED Type) |
|
| NG |
|
REPLACE FOG FR RELAY |
|
|
5. |
CHECK HARNESS AND CONNECTOR (FOG FR RELAY - FOG LIGHT BULB) |
(a) Remove the FOG FR relay.
(b) Disconnect the B11 fog light bulb LH connector.
(c) Disconnect the B10 fog light bulb RH connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3 (FOG FR relay) - B10-2 (B) |
Always |
Below 1 Ω |
|
3 (FOG FR relay) - B11-2 (B) |
Always |
Below 1 Ω |
|
3 (FOG FR relay) or B10-2 (B) - Body ground |
Always |
10 kΩ or higher |
|
3 (FOG FR relay) or B11-2 (B) - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. |
CHECK HARNESS AND CONNECTOR (FOG FR RELAY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Remove the FOG FR relay.
(b) Disconnect the 4A instrument panel junction block assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 (FOG FR relay) - 4A-52 |
Always |
Below 1 Ω |
|
1 (FOG FR relay) or 4A-52 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
7. |
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
(a) Remove the instrument panel junction block assembly.
Click here
(b) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4A-52 - A-7 (FFGO) |
Always |
Below 1 Ω |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
8. |
CHECK HARNESS AND CONNECTOR (FOG FR RELAY - FOG LIGHT ASSEMBLY) |
(a) Remove the FOG FR relay.
(b) Disconnect the B11 fog light assembly LH connector.
(c) Disconnect the B10 fog light assembly RH connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
3 (FOG FR relay) - B10-2 (B) |
Always |
Below 1 Ω |
|
3 (FOG FR relay) - B11-2 (B) |
Always |
Below 1 Ω |
|
3 (FOG FR relay) or B10-2 (B) - Body ground |
Always |
10 kΩ or higher |
|
3 (FOG FR relay) or B11-2 (B) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
9. |
CHECK HARNESS AND CONNECTOR (FOG FR RELAY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Remove the FOG FR relay.
(b) Disconnect the 4F instrument panel junction block assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2 (FOG FR relay) - 4F-32 |
Always |
Below 1 Ω |
|
2 (FOG FR relay) or 4F-32 - Body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|