| Last Modified: 11-27-2007 | 1.6 D | |
| Service Category: Audio/Visual/Telematics | Section: Cellular Communication | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000001BU000EX |
| Title: CELLULAR COMMUNICATION: LEXUS LINK SYSTEM: DTC CHECK / CLEAR (2008 LX570) | ||
DTC CHECK / CLEAR
1. DTC CHECK/CLEAR (Using Mayday Switch)
HINT:
Turn the engine switch on (IG), wait 5 seconds, and then check the DTC.
(a) Current DTC check
With the engine switch on (IG), press and hold the PTT button, and then press the VOL+ button 5 times within 15 seconds.
(b) Historic DTC check
With the engine switch on (IG), press and hold the PTT button, and then press the VOL- button 5 times within 15 seconds.
(c) Clear historic DTC
With the engine switch on (IG), press and hold the PTT button, and then press the door unlock switch of the power window regulator master switch 5 times within 15 seconds.
2. DTC CHECK/CLEAR (Using the Techstream)
(a) Check DTC
(1) Connect the Techstream to the DLC3.
(2) Turn the engine switch on (IG).
(3) Turn the Techstream on.
(4) Enter the following menus: Body Electrical / Mayday Gateway / Trouble Codes.
(5) Check the DTCs.
(b) Clear DTC
(1) Connect the Techstream to the DLC3.
(2) Turn the engine switch on (IG).
(3) Turn the Techstream on.
(4) Enter the following menus: Body Electrical / Mayday Gateway / Trouble Codes.
(5) Clear the DTCs.
3. LED BLINKING PATTERN
When the system is in the diagnosis mode, the red and green LEDs on the mayday switch will blink in the applicable pattern. The blinking pattern shown in the illustration is an example of DTC 3-2 and 4-3.
DTCs will be output in numerical order.
A set of DTC blinking patterns will be output twice.
4. EXIT DIAGNOSIS MODE
Diagnosis mode can be exited by turning the engine switch off.
5. INFRASTRUCTURE TROUBLESHOOTING
LEXUS Link System:
|
Item |
Symptom |
Cause |
Check Method |
Countermeasure |
|---|---|---|---|---|
|
Activation |
Cannot be activated |
Infrastructure Telephone ECU assembly |
Check if phone connects to LEXUS Link call center when SERVICES button is pressed If it does, problem may be in LEXUS Link call center/infrastructure If telephone ECU assembly is within cover service area of system, replace it*1 |
If problem is in LEXUS Link call center/infrastructure, inform TMS and request repairs If problem is in telephone ECU assembly, replace it*1 In some cases, moving vehicle to another location and trying to activate service connection again can solve problem |
|
Service Call Emergency Call |
Cannot connect to LEXUS Link call center Connection retry frequently occurs |
Infrastructure Telephone antenna (Cellular phone antenna)*2 Telephone ECU assembly |
Run vehicle, check whether connection is related to place or area*3 If it is not related to place or area, problem may be in telephone ECU assembly or telephone antenna (cellular phone antenna)*2 If it is related to place or area, problem may be in infrastructure |
If problem is not infrastructure, check wiring connection of telephone antenna (cellular phone antenna)*2 If there are no connection problems, check telephone ECU assembly |
|
Service Call Emergency Call |
Cannot connect to LEXUS Link call center Connection retry frequently occurs |
Infrastructure |
Setup of infrastructure may be wrong |
Cellular carrier in area is not set up to accept Mobile Identification Number (MIN) for telephone ECU assembly on vehicle Inform TMS and request setup |
|
Service Call Emergency Call |
Disconnection immediately after connection |
Infrastructure Telephone antenna (Cellular phone antenna)*2 Telephone ECU assembly |
Run vehicle, check whether connection is related to place or area*3 If it is not related to place or area, problem may be in telephone ECU assembly or telephone antenna (cellular phone antenna)*2 If it is related to place or area, problem may be in infrastructure |
If problem is not infrastructure, check wiring connection of telephone antenna (cellular phone antenna)*2 If there are no problems with above areas, check telephone ECU assembly |
|
Service Call Emergency Call |
After connecting to LEXUS Link call center and driving long distance, connection worsens |
Infrastructure |
There is difference between registered information of location during activation and information in current location, leading to bad LEXUS Link call center connection |
Contact LEXUS Link call center with service call, ask to change registration information and download setup information again |
|
Service Call Emergency Call |
LEXUS Link system has no response after messages "Connecting to LEXUS Link" or "Connecting to LEXUS Link Emergency" |
Infrastructure Telephone antenna (Cellular phone Antenna)*2 Telephone ECU assembly |
Run vehicle, check whether connection is related to place or area*3 If it is not related to place or area, problem may be in telephone ECU assembly or telephone antenna (cellular phone antenna)*2 If it is related to place or area, problem may be in infrastructure |
Cellular electronic wave condition in area may cause this problem As vehicle data reaches LEXUS Link call center, call center will call back to vehicle |
|
Service Call Emergency Call |
Communication quality is abnormal |
Infrastructure LEXUS Link system |
Run vehicle, check whether connection is related to place or area*3 If it is not related to place or area, problem may be in telephone ECU assembly or telephone antenna (cellular phone antenna)*2 If it is related to place or area, problem may be in infrastructure |
If problem is not in infrastructure, check vehicle equipment such as mayday switch, etc. |
HINT:
*1: If replacement of the ECU is necessary, replace the mayday battery (backup battery) together with the ECU. After the replacement, register the ECU.
*2: Telephone antenna includes peripheral parts such as the telephone antenna rod, telephone antenna base, antenna wire, etc.
*3: When running the vehicle, make sure it is in the LEXUS Link service area. If on a level surface, the vehicle may only need to be driven a short distance before a connection can be made. If in a mountainous area, the vehicle may have to be driven a long distance before the connection can be made.
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