| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Audio/Visual/Telematics | Section: Audio/Video | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM0000011EZ03UX |
| Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: CAUTION / NOTICE / HINT (2008 LX570) | ||
|
Illumination Circuit |
CAUTION / NOTICE / HINT
DESCRIPTION
HINT:
If the vehicle has a navigation system, "multi-display" refers to the "display and navigation module display".
Power is supplied to the multi-display, radio receiver and steering pad switch illumination when the light control switch is in the tail or head position.
WIRING DIAGRAM
INSPECTION PROCEDURE
CAUTION:
The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the Precaution for the SRS
.
PROCEDURE
|
1. |
CHECK ILLUMINATION |
(a) Check if the illumination for the multi-display, steering pad switch, glove box light, cigarette lighter, or others (seat heater switch, front seat memory switch, etc.) comes on when the light control switch is turned to the head or tail position.
Result
|
Result |
Proceed to |
|---|---|
|
Illumination comes on for all components except steering pad switch. |
A |
|
Illumination comes on for all components except radio receiver. |
B |
|
Illumination comes on for all components except multi-display. |
C |
|
No illumination comes on for radio receiver, multi-display, glove box light, front seat memory switch, cigarette lighter, etc. |
D |
|
|
2. |
CHECK HARNESS AND CONNECTOR (BATTERY - SPIRAL CABLE) |
(a) Disconnect the E12 cable connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E12-12 (IL+2) - Body ground |
Always |
11 to 14 V |
|
|
3. |
CHECK STEERING PAD SWITCH (STEERING PAD SIDE) |
(a) Disconnect the z51 switch connector.
(b) Apply battery voltage to the connector, and check the LED illumination condition.
OK:
|
Measurement Condition |
Specified Condition |
|---|---|
|
Battery positive (+) → Terminal 1 (IL+2) Battery negative (-) → Terminal 8 (EAU) |
LED illuminates |
|
|
4. |
CHECK NO. 1 SWITCH WIRE |
|
(a) Disconnect the z35 cable connector. |
(b) Disconnect the switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
z35-5 (IL+2) - 1 (IL+2) |
Always |
Below 1 Ω |
|
z35-8 (EAU) - 8 (EAU) |
|
|
5. |
INSPECT SPIRAL CABLE SUB-ASSEMBLY |
(a) Disconnect the E12 and z35 cable connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E12-12 (IL+2) - z35-5 (IL+2) |
Spiral cable is turned 2.5 rotations counterclockwise |
Below 3 Ω |
|
Spiral cable is centered |
||
|
Spiral cable is turned 2.5 rotations clockwise |
||
|
E12-4 (EAU) - z35-8 (EAU) |
Spiral cable is turned 2.5 rotations counterclockwise |
Below 3 Ω |
|
Spiral cable is centered |
||
|
Spiral cable is turned 2.5 rotations clockwise |
CAUTION:
The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may prevent the airbag from deploying. Be sure to read the Precaution for the SRS
.
|
|
6. |
CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - RADIO RECEIVER) |
|
(a) Disconnect the F23 receiver connector. |
(b) Disconnect the E12 cable connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F23-6 (SWG) - E12-4 (EAU) |
Always |
Below 1 Ω |
|
F23-6 (SWG) - Body ground |
Always |
10 kΩ or higher |
|
|
7. |
CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMBINATION METER AND BATTERY) |
|
(a) Disconnect the F1 receiver connector. |
(b) Disconnect the E77 meter connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F1-12 (ILL-) - E77-17 (ILL-) |
Always |
Below 1 Ω |
|
F1-12 (ILL-) - Body ground |
Always |
10 kΩ or higher |
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
F1-2 (ILL+) - Body ground |
Light control switch tail or head |
11 to 14 V |
|
|
8. |
CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - COMBINATION METER AND BATTERY) |
|
(a) Disconnect the F28 display connector. |
(b) Disconnect the E77 meter connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F28-5 (HILL) - E77-17 (ILL-) |
Always |
Below 1 Ω |
|
F28-5 (HILL) - Body ground |
Always |
10 kΩ or higher |
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
F28-12 (ILL+) - Body ground |
Light control switch tail or head |
11 to 14 V |
Result
|
Result |
Proceed to |
|---|---|
|
OK (w/ Navigation System) |
A |
|
OK (w/o Navigation System) |
B |
|
NG |
C |
|
|
|