HOW TO PROCEED WITH TROUBLESHOOTING
HINT
Use these procedures to troubleshoot the LEXUS Link system.
- VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
- CHECK FOR DTC Check for current DTC. Refer to «DTC CHECK / CLEAR»(ref-387182-S26125044132011022400000) . HINT: For the blinking pattern, refer to «DIAGNOSIS SYSTEM»(ref-387182-S21758669792011022400000) and DTC CHECK / CLEAR. Refer to «DTC CHECK / CLEAR»(ref-387182-S26125044132011022400000) . RESULT Result Proceed to Blinking each code A FAST1 B FAST2 C A --> Go to DIAGNOSTIC TROUBLE CODE CHART B --> END C: Go to next step
- CHECK FOR DTC Check for historic DTC. Refer to «DTC CHECK / CLEAR»(ref-387182-S26125044132011022400000) . NEXT: Go to next step
- DIAGNOSTIC TROUBLE CODE CHART HINT: Even if the malfunction that caused the DTC output during the historic DTC check is fixed, the FAST2 blinking pattern of the current DTC will remain. NEXT: Go to next step
- CLEAR HISTORIC DTC Clear historic DTC. Refer to «DTC CHECK / CLEAR»(ref-387182-S26125044132011022400000) . NEXT: Go to next step
- CONFIRMATION TEST Check for current DTCs and confirm that the FAST1 blinking pattern occurs. NEXT --> END
DIAGNOSTIC TROUBLE CODE CHART
| DTC Code | Detection Item | Trouble Area | Indicator (red LED) Illuminates When DTC is Present | Refer to |
|---|---|---|---|---|
| 1-1 | Services Disabled | No problem | No | Refer to DTC 1-1: Services Disabled |
| 1-2 | Option Configuration Error | Mayday ECU | Yes | Refer to DTC 1-2: Option Configuration Error |
| 2-1 | EEPROM Communication Error | Mayday ECU | Yes | Refer to DTC 2-1: EEPROM Communication Error; DTC 2-2: EEPROM Checksum Error |
| 2-2 | EEPROM Checksum Error | Mayday ECU | Yes | Refer to DTC 2-1: EEPROM Communication Error; DTC 2-2: EEPROM Checksum Error |
| 2-3 | Digital Signal Processor Communication Error | Mayday ECU | Yes | Refer to DTC 2-3: Digital Signal Processor Communication Error; DTC 2-4: GPS Communication Error |
| 2-4 | GPS Communication Error | Mayday ECU | Yes | Refer to DTC 2-3: Digital Signal Processor Communication Error; DTC 2-4: GPS Communication Error |
| 2-6 | Network Access Device Communication Error | Mayday ECU | Yes | Refer to DTC 2-6: Network Access Device Communication Error |
| 3-1 | GPS Antenna Error | Mayday ECU - Telephone antenna assembly (GPS antenna) - Antenna cord sub-assembly | Yes | Refer to DTC 3-1: GPS Antenna Error |
| 3-2 | Cellular Phone Antenna Error | Mayday ECU - Telephone antenna assembly (Cellular phone antenna) - Antenna cord sub-assembly | Yes | Refer to DTC 3-2: Cellular Phone Antenna Error |
| 3-3 | GPS Signal not Received | Location or service area - Telephone antenna assembly (GPS antenna) | Yes | Refer to DTC 3-3: GPS Signal not Received |
| 4-1 | Red LED Error | Mayday ECU - Map light assembly - Mayday switch assembly - Wire harness | Not applicable | Refer to DTC 4-1: Red LED Error |
| 4-2 | Green LED Error | Mayday ECU - Map light assembly - Mayday switch assembly - Wire harness | Yes | Refer to DTC 4-2: Green LED Error |
| 4-3 | Overhead Module Microphone Error | Mayday ECU - Microphone amplifier assembly - Map light assembly - Wire harness | Yes | Refer to DTC 4-3: Overhead Module Microphone Error |
| 4-4 | SERVICES, PHONE or PTT Button Stuck | Mayday ECU - Map light assembly - Mayday switch assembly | Yes | Refer to DTC 4-4: SERVICES, PHONE or PTT Button Stuck |
| 4-5 | EMERGENCY, VOL+ or VOL- Button Stuck | Mayday ECU - Map light assembly - Mayday switch assembly | Yes | Refer to DTC 4-5: EMERGENCY, VOL+ or VOL- Button Stuck |
| 4-6 | SERVICES, PHONE or PTT Button has Connection Error | Mayday ECU - Map light assembly - Mayday switch assembly - Wire harness | Yes | Refer to DTC 4-6: SERVICES, PHONE or PTT Button has Connection Error |
| 4-7 | EMERGENCY, VOL+ or VOL- Button has Connection Error | Mayday ECU - Map light assembly - Mayday switch assembly - Wire harness | Yes | Refer to DTC 4-7: EMERGENCY, VOL+ or VOL- Button has Connection Error |
| 5-1 | BEAN Communication Error | Mayday ECU - Light control switch circuit - Cowl side junction block RH (Main body ECU RH) - Another BEAN line ECU - Wire harness | Yes | Refer to DTC 5-1: LEXUS Link Communication Error |
| 5-2 | Airbag Signal Communication Error | Mayday ECU - Center airbag sensor assembly - Wire harness | Yes | Refer to DTC 5-2: Airbag Signal Communication Error |
| 6-1 | Backup Battery Depleted | Mayday battery (backup battery) | Yes | Refer to DTC 6-1: Backup Battery Depleted |
| 6-2 | Low Vehicle Battery Voltage | Vehicle battery - ECU power source circuit | Yes | Refer to DTC 6-2: Low Vehicle Battery Voltage |
| 6-3 | Backup Battery has been used | No problem | Not applicable | Refer to DTC 6-3: Backup Battery has been used |
| 6-4 | Backup Battery Connection Error | Mayday ECU - Mayday battery (backup battery) - Wire harness | Yes | Refer to DTC 6-4: Backup Battery Connection Error |
MAYDAY ECU