| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Vehicle Exterior | Section: Lighting (ext) | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002WKY005X |
| Title: LIGHTING (INT): LIGHTING SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
Illumination Circuit |
DESCRIPTION
Upon receiving signals from the switches, the main body ECU illuminates the lights.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
PERFORM ACTIVE TEST USING TECHSTREAM (ILLUMINATION LIGHT) |
(a) Connect the Techstream to DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Turn the room light switch to the DOOR position.
(e) All doors closed (courtesy light switches OFF).
(f) Enter the following menus: Body Electrical / Body / Active Test / Illuminated Entry System.
(g) Check the illumination lights while operating the main body ECU using the Techstream.
Main Body
|
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Illuminated Entry System |
Illumination light |
ON or OFF |
- |
OK:
The illuminated entry system operates normally when operating it through the Techstream.
Result
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (All lights do not turn on) |
B |
|
NG (Only ignition key cylinder light does not turn on) |
C |
|
NG (Only foot light does not turn on) |
D |
|
NG (Room lights do not turn on) |
E |
|
|
2. |
INSPECT FUSE (DOME) |
|
(a) Remove the DOME fuse from the engine room relay block. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
DOME fuse |
Always |
Below 1 Ω |
(c) Reinstall the DOME.
|
|
3. |
CHECK HARNESS AND CONNECTOR (DOME FUSE - MAIN BODY ECU) |
|
(a) Disconnect the DD main body ECU connector. |
(b) measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
DD-51 (ILE) - Body ground |
Always |
11 to 14 V |
(c) Reconnect the main body ECU connector.
|
|
4. |
INSPECT TRANSPONDER KEY AMPLIFIER (IGNITION KEY CYLINDER LIGHT) |
|
(a) Remove the transponder key amplifier (ignition key cylinder light)
|
(b) Connect the battery positive (+) lead to terminal 2 (ILL+) and the negative (-) lead to terminal 6 (ILL-), and then check that the light turns on.
OK:
|
Tester Connection |
Specified Condition |
|---|---|
|
Positive battery → 2 (ILL+) negative battery → 1 (ILL-) |
Ignition key cylinder light turns on. |
(c) Reinstall the transponder key amplifier (ignition key cylinder light).
|
|
5. |
CHECK HARNESS AND CONNECTOR (IGNITION KEY CYLINDER LIGHT - BATTERY) |
|
(a) Disconnect the H27 transponder key amplifier (ignition key cylinder light) connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H27-2 (ILL+) - Body ground |
Always |
11 to 14 V |
(c) Reconnect the transponder key amplifier (ignition key cylinder light) connector.
|
|
6. |
INSPECT FOOT LIGHT |
|
(a) Remove the foot light
|
(b) Connect the battery positive (+) lead to terminal 2 and the negative (-) lead to terminal 1, and then check that the light turns on.
OK:
|
Tester Connection |
Specified Condition |
|---|---|
|
Positive battery → 1 negative battery → 2 |
Foot light turns on. |
(c) Reinstall the foot light.
|
|
7. |
CHECK HARNESS AND CONNECTOR (FOOT LIGHT - BATTERY) |
|
(a) Disconnect the H60 foot light connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H60-1 - Body ground |
Always |
11 to 14 V |
(c) Reconnect the foot light connector.
|
|
8. |
PERFORM ACTIVE TEST USING TECHSTREAM (ILLUMINATED ENTRY) |
(a) Connect the Techstream to DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Turn the room light switch DOOR position.
(e) All doors closed (courtesy light switches OFF).
(f) Enter the following menus: Body Electrical / Body / Active Test / Illuminated Entry System.
(g) Check the illumination lights while operating the main body ECU using the Techstream.
Main Body
|
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Illuminated Entry System |
Illumination light |
ON or OFF |
- |
OK:
The illuminated entry system operates normally when operating it through the Techstream.
Result
|
Result |
Proceed to |
|---|---|
|
NG (All room lights do not turn on) |
A |
|
NG (Personal light does not turn on) |
B |
|
NG (No. 1 room light does not turn on) |
C |
|
NG (No. 2 room light does not turn on) |
D |
|
|
9. |
INSPECT INTERIOR DOME LIGHT SWITCH ASSEMBLY |
|
(a) Remove the interior room light switch assembly
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
5 (FCTY) - 10 (FLMP) |
interior room light switch DOOR |
Below 1 Ω |
(c) Reinstall the interior room light switch assembly.
|
|
10. |
CHECK HARNESS AND CONNECTOR (ROOM LIGHTS - INTERIOR DOME LIGHT SWITCH ASSEMBLY) |
|
(a) Disconnect the J7 interior room light switch assembly connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
J7-10 (FLMP) - Body ground |
Room light switch DOOR |
11 to 14 V |
(c) Reconnect the interior room light switch assembly connector.
|
|
11. |
INSPECT ROOF CONSOLE BOX ASSEMBLY (PERSONAL LIGHT) |
|
(a) Remove the roof console box assembly.
|
(b) Roof console box (personal light) switch is OFF position.
(c) Connect the battery positive (+) lead to terminal 2 (B) and the negative (-) lead to terminal 1 (CTY), and then check that the light turns on.
OK:
|
Tester Connection |
Specified Condition |
|---|---|
|
Positive battery → 2 (B) negative battery → 1 (CTY) |
Personal light turns on. |
(d) Reinstall the roof console box assembly.
Result
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (for short type roof console box) |
B |
|
NG (for long type roof console box) |
C |
|
|
12. |
CHECK HARNESS AND CONNECTOR (ROOF CONSOLE BOX ASSEMBLY - DOME FUSE) |
|
(a) Disconnect the U7 roof console box assembly connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
U7-2 (B) - Body ground |
Always |
11 to 14 V |
(c) Reconnect the roof console box assembly connector.
|
|
13. |
INSPECT No. 1 ROOM LIGHT ASSEMBLY |
|
(a) Remove the No. 1 room light assembly.
|
(b) No. 1 room light switch is OFF position.
(c) Connect the battery positive (+) lead to terminal 1(B) and the negative (-) lead to terminal 3 (CTY), and then check that the light turns on.
OK:
w/o Rear Seat Entertainment System
|
Tester Connection |
Specified Condition |
|---|---|
|
Positive battery → 1 (B) negative battery → 3 (CTY) |
No. 1 room light turns on. |
w/ Rear Seat Entertainment System
|
Tester Connection |
Specified Condition |
|---|---|
|
Positive battery → 1 (B) negative battery → 3 (CTY) |
No. 1 room light turns on. |
(d) Reinstall the No. 1 room light assembly.
Result
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (w/o Rear seat entertainment system) |
B |
|
NG (w/ Rear seat entertainment system) |
C |
|
|
14. |
CHECK HARNESS AND CONNECTOR (NO. 1 ROOM LIGHT ASSEMBLY - DOME FUSE) |
|
(a) Disconnect the U6*1 or U8*2 No. 1 room light assembly connector. *1: w/o Rear seat entertainment system *2: w/ Rear seat entertainment system |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
w/o Rear Seat Entertainment System
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
U6-1 (B) - Body ground |
Always |
11 to 14 V |
w/ Rear Seat Entertainment System
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
U8-1 (B) - Body ground |
Always |
11 to 14 V |
(c) Reconnect the No. 1 room light assembly connector.
|
|
15. |
INSPECT NO. 2 ROOM LIGHT ASSEMBLY |
|
(a) Remove the No. 2 room light assembly
|
(b) No. 2 room light switch is OFF position.
(c) Connect the battery positive (+) lead to terminal 1 (B) and the negative (-) lead to terminal 3 (CTY), and then check that the light turns on.
OK:
|
Tester Connection |
Specified Condition |
|---|---|
|
Positive battery → 1 (B) negative battery → 3 (CTY) |
No. 2 room light turns on. |
(d) Reinstall the No. 2 room light assembly.
|
|
16. |
CHECK HARNESS AND CONNECTOR (NO. 2 ROOM LIGHT ASSEMBLY - DOME FUSE) |
|
(a) Disconnect the U9 No. 2 room light assembly connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
U9-1 (B) - Body ground |
Always |
11 to 14 V |
(c) Reconnect the No. 2 room light assembly connector.
|
|
|