| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Vehicle Interior | Section: Seat | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000002RDA005X |
| Title: SEAT: CLIMATE CONTROL SEAT SYSTEM: DESCRIPTION (2008 LX570) | ||
|
Climate Control System does not Operate on Driver Side |
DESCRIPTION
When the climate control seat switch is operated, the seat climate control ECU receives the signal and operates the climate control system.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK FUSE (SEAT-A/C FAN, SEAT-A/C LH, LH-IG) |
(a) Remove the SEAT-A/C FAN fuse from the cowl side junction block RH.
(b) Remove the SEAT-A/C LH fuse from the engine room relay block.
(c) Remove the LH-IG fuse from the main body ECU.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
SEAT-A/C FAN fuse |
Always |
Below 1 Ω |
|
SEAT-A/C LH fuse |
Always |
Below 1 Ω |
|
LH-IG fuse |
Always |
Below 1 Ω |
|
|
2. |
CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - BATTERY AND BODY GROUND) |
(a) Disconnect the c38 ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
c38-12 (GND) - Body ground |
Always |
Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
c38-1 (IG) - Body ground |
Engine switch on (IG) |
11 to 14 V |
|
c38-2 (B) - Body ground |
Always |
11 to 14 V |
|
|
3. |
CHECK HARNESS AND CONNECTOR (CLIMATE CONTROL SEAT SWITCH LH - BATTERY AND BODY GROUND) |
(a) Disconnect the E93 switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E93-2 (E) - Body ground |
Always |
Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E93-7 (IG) - Body ground |
Engine switch on (IG) |
11 to 14 V |
|
|
4. |
INSPECT CLIMATE CONTROL SEAT SWITCH LH |
(a) Disconnect the E93 switch connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
5 (V5L) - 4 (VSL) |
Max cool → Max warm |
Below 1 Ω → 5 kΩ |
|
|
5. |
CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - CLIMATE CONTROL SEAT SWITCH LH) |
(a) Disconnect the c38 ECU connector.
(b) Disconnect the E93 switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
c38-14 (V5) - E93-5 (V5L) |
Always |
Below 1 Ω |
|
c38-18 (VS) - E93-4 (VSL) |
Always |
Below 1 Ω |
|
c38-15 (VG) - E93-3 (VGL) |
Always |
Below 1 Ω |
|
c38-14 (V5) - Body ground |
Always |
10 kΩ or higher |
|
c38-18 (VS) - Body ground |
Always |
10 kΩ or higher |
|
c38-15 (VG) - Body ground |
Always |
10 kΩ or higher |
|
|
|