| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Vehicle Exterior | Section: Lighting (ext) | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000002TTH007X |
| Title: LIGHTING (EXT): LIGHTING SYSTEM: WIRING DIAGRAM (2008 LX570) | ||
|
Personal Light does not Illuminate |
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CONFIRM LIGHT POSITION |
(a) Check the malfunctioning personal light.
Result
|
Result |
Proceed to |
|---|---|
|
Rear personal light |
A |
|
Front personal light |
B |
|
|
2. |
CHECK HARNESS AND CONNECTOR (MAP LIGHT - BATTERY) |
(a) Disconnect the R7 light connector.
(b) Measure the voltage to the according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
R7-27 (+B3) - Body ground |
Always |
11 to 14 V |
|
|
3. |
INSPECT ROOM NO. 1 LIGHT |
(a) Remove the room No. 1 light connector
.
(b) Apply battery voltage to the connector, and check the illumination condition.
OK:
|
Measurement Condition |
Specified Condition |
|---|---|
|
Battery positive (+) → Terminal 1 (MPR) Battery negative (-) → Terminal 9 (E) |
Illuminates |
|
Battery positive (+) → Terminal 3 (MPL) Battery negative (-) → Terminal 9 (E) |
Illuminates |
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (w/ Rear Seat Entertainment System) |
B |
|
NG (w/o Rear Seat Entertainment System) |
C |
|
|
4. |
CHECK HARNESS AND CONNECTOR (MAP LIGHT - ROOM NO. 1 LIGHT) |
(a) Disconnect the R7, R12 and R10 light connectors.
(b) Measure the resistance to the according value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
R7-15 (RGND) - R10-9 (E) |
Always |
Below 1 Ω |
|
R7-3 (RLSW) - R10-2 (SWL) |
||
|
R7-4 (RRSW) - R10-6 (SWR) |
||
|
R12-7 (RLMP) - R10-3 (MPL) |
||
|
R12-8 (RRMP) - R10-1 (MPR) |
||
|
R7-15 (RGND) - Body ground |
Always |
10 kΩ or higher |
|
R7-3 (RLSW) - Body ground |
||
|
R7-4 (RRSW) - Body ground |
||
|
R12-7 (RLMP) - Body ground |
||
|
R12-8 (RRMP) - Body ground |
|
|
|