| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Vehicle Interior | Section: Meter/Gauge/Display | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM0000031ST004X |
| Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
Meter Illumination is Always Dark |
DESCRIPTION
When the ignition switch is turned to ACC or ON, the accessory meter operates as follows.
The accessory meter receives light control switch signals and combination meter signals, and performs illumination dim operations.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK ILLUMINATION FUNCTION |
(a) Check the illumination function.
Result
|
Result |
Proceed to |
|---|---|
|
Accessory meter illumination is always dark |
A |
|
Combination meter illumination is always dark |
B |
|
|
2. |
INSPECT FUSE (PANEL) |
|
(a) Remove the PANEL fuse from the main body ECU. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
PANEL fuse |
Always |
Below 1 Ω |
|
|
3. |
CHECK HARNESS AND CONNECTOR (ACCESSORY METER - BATTERY) |
|
(a) Disconnect the I22 accessory meter connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
I22-21 (ILL+) - Body ground |
Light control switch ON |
11 to 14 V |
|
|
4. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER - ACCESSORY METER AND BODY GROUND) |
|
(a) Disconnect the H37 combination meter connector. |
(b) Disconnect the I22 accessory meter connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H37-37 (ILL-) - I22-20 (ILL-) |
Always |
Below 1 Ω |
|
H37-37 (ILL-) - Body ground |
Always |
10 kΩ or higher |
|
H37-40 (E1) - Body ground |
Always |
Below 1 Ω |
|
|
5. |
REPLACE ACCESSORY METER ASSEMBLY |
(a) Temporarily replace the accessory meter with a new or normally functioning one
.
|
|
6. |
CHECK ACCESSORY METER ASSEMBLY (OPERATION) |
(a) Check the accessory meter operation.
OK:
Operation of the accessory meter returns to normal.
|
|
|