HOW TO PROCEED WITH TROUBLESHOOTING
HINT
- Use this procedure to troubleshoot the LEXUS ENFORM system.
- VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
- CHECK THE CUSTOMER, S CONTRACT STATUS Check if the satellite radio and LEXUS ENFORM contract are valid, or if the contract period has ended using the vehicle inquiry function on TIS. Result Result Proceed to Both Contracts are valid. A Contract for satellite radio is not valid. B Contract for LEXUS ENFORM is not valid. C B --> GO TO AUDIO AND VISUAL SYSTEM (w/ Navigation System). Refer to «SYSTEM DESCRIPTION»(ref-400881-S15431123752011051800000) C --> GO TO SAFETY CONNECT SYSTEM. Refer to «SYSTEM DESCRIPTION»(ref-400665-S15029371872011051800000) A: Go to next step
- CHECK FOR DTC Perform Health Check. Refer to «HEALTH CHECK»(ref-400665-S27351626632011051800000) . Check for DTCs and note any codes that are output. Clear the DTC. Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests. Result Result Proceed to DTC is not output. A Audio and visual system DTC is output. B Safety connect system DTC is output. C Navigation System DTC is output. D B --> GO TO DIAGNOSTIC TROUBLE CODE CHART (Audio and Visual System (w/ Navigation System)). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400881-S24674488932011051800000) C --> GO TO DIAGNOSTIC TROUBLE CODE CHART (Safety Connect System). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400665-S11654604452011051800000) D --> GO TO DIAGNOSTIC TROUBLE CODE CHART (Navigation System). Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-400817-S07219444702011051800000) A: Go to next step
- PROBLEM SYMPTOMS TABLE Refer to Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE»(ref-400913-S34207686182011051800000) . Result Result Proceed to Fault is not listed in Problem Symptoms Table. A Fault is listed in Problem Symptoms Table. B HINT: If the symptom does not recur and no DTC is output, perform the symptom reproduction method. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-400649-S16126263452011051800000) . B --> Go to step 6 A: Go to next step
- PERFORM TROUBLESHOOTING Refer to Terminals of ECU. Refer to «TERMINALS OF ECU»(ref-400913-S14822464282011051800000) . NEXT: Go to next step
- ADJUST, REPAIR OR REPLACE NEXT: Go to next step
- CONFIRMATION TEST NEXT: Go to next step
- END
PROBLEM SYMPTOMS TABLE
HINT
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Refer To |
|---|---|---|
| Screen does not change when Point of Interest is selected on Destination screen | Proceed to "Switch Operation of Remote Touch not Accepted" | Refer to Switch Operation of Remote Touch not Accepted |
| Screen does not change when eDestinations is selected on Point of Interest screen | Proceed to "Switch Operation of Remote Touch not Accepted" | Refer to Switch Operation of Remote Touch not Accepted |
| Screen does not change when Destination Assist is selected on Destination screen | Proceed to "Switch Operation of Remote Touch not Accepted" | Refer to Switch Operation of Remote Touch not Accepted |
DISPLAY FUNCTION
| Symptom | Suspected Area | Refer To |
|---|---|---|
| EDestination button unavailable (grayed out) | Subscription status. Perform Vehicle Inquiry on TIS and confirm the subscription status. If the subscription is valid, press the manual (SOS) switch to verify that the system is active. If SOS call works properly, perform a Destination Assist call and verify that POI can be downloaded from the telematics provider. If the above steps are successful, the customer should call the customer service number published on the Lexus customer website. | |
| Cannot download information when Download is selected on eDestination screen | Perform Vehicle Inquiry on TIS and confirm subscription status. Using the multi-display screen, select Destination / Point of Interest / eDestinations. Verify "eDestinations" button is available. If unavailable, the button will be grayed out. If available, click the "Download" button. If "No new eDestination POIs available" or "Download Successful" message appears on the multi-display screen, the system is working properly. If "Can't connect to Network" message appears, the customer should call customer service number published on Lexus customer website. | |
| Proceed to "DCM Data Signal Circuit between Navigation ECU and DCM" | Refer to DCM Data Signal Circuit between Navigation ECU and DCM | |
| Display and navigation module display | Refer to REMOVAL | |
| Hard disk drive | Refer to REMOVAL | |
| DCM (Telematics Transceiver) | Refer to REMOVAL | |
| Cannot contact call center when Call Dest. Assist is selected on Destination Assist screen | Contact Telematics Service Provider to inquire about network status | |
| Proceed to "UNABLE TO CONNECT TO CALL CENTER" | Refer to UNABLE TO CONNECT TO CALL CENTER | |
| Proceed to "DCM Data Signal Circuit between Navigation ECU and DCM" | Refer to DCM Data Signal Circuit between Navigation ECU and DCM | |
| Display and navigation module display | Refer to REMOVAL | |
| Hard disk drive | Refer to REMOVAL | |
| DCM (Telematics Transceiver) | Refer to REMOVAL | |
| Other caller's voice volume cannot be adjusted using the Destination Assist screen. | Display and navigation module display | Refer to REMOVAL |
DESTINATION FUNCTION
| Symptom | Suspected Area | Refer To |
|---|---|---|
| Screen does not change when XM related function is selected on Information screen | Proceed to "Satellite Radio Broadcast cannot be Received" | Refer to Satellite Radio Broadcast cannot be Received |
| Display and navigation module display | Refer to REMOVAL | |
| Radio receiver assembly | Refer to REMOVAL |
SDARS SYSTEM FUNCTION
| Symptom | Suspected Area | Refer To |
|---|---|---|
| Screen does not change when LEXUS Insider is selected on Information screen | Proceed to "Switch Operation of Remote Touch not Accepted" | Refer to Switch Operation of Remote Touch not Accepted |
| Data cannot be received using LEXUS Insider screen | Check the LEXUS Insider Setting (Opt in/Out status) in the Navigation Set-up menu. | |
| Proceed to "DCM Data Signal Circuit between Navigation ECU and DCM" | Refer to DCM Data Signal Circuit between Navigation ECU and DCM | |
| Display and navigation module display | Refer to REMOVAL | |
| Radio receiver assembly | Refer to REMOVAL | |
| DCM (Telematics Transceiver) | Refer to REMOVAL | |
| Articles cannot be received automatically although New Article Notification function of LEXUS Insider setting has been set to on* | Contact Telematics Service Provider to inquire about network status | |
| Display and navigation module display | Refer to REMOVAL | |
| Radio receiver assembly | Refer to REMOVAL | |
| DCM (Telematics Transceiver) | Refer to REMOVAL | |
| Voice guidance does not function. (Voice guidance for the navigation system is normal.) | Display and navigation module display | Refer to REMOVAL |
| Cannot stop LEXUS Insider articles from playing | Select another mode, such as AM, FM, CD, etc. |
LEXUS INSIDER FUNCTION
Note. *: There could be several days delay for receiving LEXUS Insider articles.