| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001FP5G |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 10/2022] |
| Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: Operating Light Control Rheostat does not Change Light Brightness; 2019 - 2022 MY RAV4 RAV4 HV [11/2018 - 10/2022] | ||
|
Operating Light Control Rheostat does not Change Light Brightness |
DESCRIPTION
The combination meter assembly receives signals from this circuit to adjust the illumination of the combination meter assembly. The combination meter assembly sets the illumination level based on the user operation of the light control rheostat switch.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
HINT:
- The meter illumination level can be adjusted by pressing the light control rheostat switch.
- The meter illumination dims when the taillights are turned on.
- Setting the meter illumination level to maximum brightness cancels the above dimming of the meter illumination.
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM |
(a) Using the Techstream, read the Data List.
Click here
![2019 - 2020 MY RAV4 RAV4 HV [11/2018 - 08/2020]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: DATA LIST / ACTIVE TEST](/t3Portal/stylegraphics/info.gif)
Body Electrical > Combination Meter > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Meter Day Mode Switch |
Light control rheostat (tail cancel switch) signal |
OFF or ON |
OFF: Light control rheostat (tail cancel switch) off ON: Light control rheostat (tail cancel switch) on |
- |
|
Rheostat value |
Light control rheostat input signal |
Min.: 0.00%, Max.: 100.02% or Unset |
Light control rheostat dark (0.00%) → bright (100.02%) |
- |
Body Electrical > Combination Meter > Data List
|
Tester Display |
|---|
|
Meter Day Mode Switch |
|
Rheostat value |
OK:
Light control rheostat condition displayed on the Techstream changes with the actual switch operation.
| OK |
|
|
|
2. |
INSPECT LIGHT CONTROL RHEOSTAT |
(a) Remove the light control rheostat.
Click here
(b) Inspect the light control rheostat.
Click here
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - LIGHT CONTROL RHEOSTAT) |
(a) Disconnect the G18 combination meter assembly connector.
(b) Disconnect the G108 light control rheostat connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G18-34 (SW1) - G108-5 (T) |
Always |
Below 1 Ω |
|
G18-17 (TC) - G108-3 (TC) |
Always |
Below 1 Ω |
|
G18-16 (SW2) - G108-4 (TR) |
Always |
Below 1 Ω |
|
G18-11 (SW3) - G108-2 (E) |
Always |
Below 1 Ω |
|
G18-34 (SW1) or G108-5 (T) - Body ground |
Always |
10 kΩ or higher |
|
G18-17 (TC) or G108-3 (TC) - Body ground |
Always |
10 kΩ or higher |
|
G18-16 (SW2) or G108-4 (TR) - Body ground |
Always |
10 kΩ or higher |
|
G18-11 (SW3) or G108-2 (E) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|