| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM000001EFU004X |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: CELLULAR COMMUNICATION: LEXUS LINK SYSTEM: 2-3,2-4; Digital Signal Processor Communication Error; 2007 MY LX470 [08/2006 - ] | ||
|
DTC |
2-3 |
Digital Signal Processor Communication Error |
|
DTC |
2-4 |
GPS Communication Error |
DESCRIPTION
These DTCs are output when a communication error occurs between the CPU and each interface in the mayday ECU assembly.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
2 - 3 |
DSP interface communication error in mayday ECU |
Mayday ECU assembly |
|
2 - 4 |
GPS interface communication error in mayday ECU |
Mayday ECU assembly |
|
Current DTC |
Historic DTC only |
|---|---|
|
Disconnect and reconnect battery. Check for current DTCs. If DTC returns, replace mayday ECU and mayday battery (backup battery). |
If this is only a historic DTC, the system has already recovered normally and should be operating normally. Clear historic DTCs. |
INSPECTION PROCEDURE
PROCEDURE
|
1. |
RESET MAYDAY ECU ASSEMBLY |
(a) Exit diagnosis mode and wait for 10 seconds.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for 10 minutes.
(c) Reconnect the cable to the negative (-) battery terminal, and wait for 10 seconds.
(d) Turn the ignition switch ON, and then check for the current DTC again.
|
Result |
Proceed to |
|---|---|
|
Current DTC 2-3 or 2-4 exists |
A |
|
Historic DTC 2-3 or 2-4 exists |
B |
| B |
|
| A |
|
REPLACE MAYDAY ECU ASSEMBLY TOGETHER WITH MAYDAY BATTERY AND THEN PERFORM REGISTRATION |
|
|