Lexus IS250 IS220d GSE20 ALE20 - NAVIGATION

DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTC OF OTHER COMPONENTS

IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE

CHECK COMPONENT WHICH HAS STORED THIS CODE

CLEAR DTC

RECHECK DTC

DTC 01-DC Transmission Error

DESCRIPTION

DTC No.DTC Detection ConditionTrouble Area
01-DC Transmission to component shown by sub-code failed.
(Detecting this DTC does not always mean actual failure.)		 If the same sub-code is recorded in other components, check harness for power supply and communication system of all components shown by code
  • NOTICE:
The multi-display is the master unit.
Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.

INSPECTION PROCEDURE

  • NOTICE:
  • Be sure to read DESCRIPTION before performing the following procedures.
1.CHECK FOR DTC OF OTHER COMPONENTS

Check if the component shown by the sub-code is displayed in the check result of the other components.


Check if "01-DC" is output for the other components.

If "01-DC" is output for any other components, check if the same physical address is displayed.

  • HINT:
  • For the list of the components shown by sub-codes, refer to the table in step 2.
  • Result:
  • ResultProceed to
    "01-DC" is output and the same physical address is displayedA
    "01-DC" is not output or the same physical address is not displayedB
B
Go to step 4
A
2.IDENTIFY THE COMPONENT WHICH HAS STORED THIS CODE
Dtc 01-Dc Transmission Error. NAVIGATION. Lexus IS250 IS220d GSE20 ALE20

Enter the diagnostic mode.

Press the "LAN Mon" switch to change to "LAN Monitor" mode.

Identify the component which has stored this code.

Component Table:
DisplayComponent
AUDIO H/U (190)Radio receiver
DSP-AMP (440)Stereo component amplifier
G/W (1C6)Gateway ECU
NAVI (178)Navigation ECU
EMV (110)Multi-display
CAMERA-C (1AC)Television camera ECU
  • HINT:
  • "NAVI" is the component which has stored this code in the example shown in the illustration.
NEXT
3.CHECK COMPONENT WHICH HAS STORED THIS CODE

Select the component which has stored this code.

Component Table:
ComponentProceed to
Gateway ECU (G/W)Gateway ECU communication error
Radio receiver (AUDIO H/U)Radio receiver communication error
Stereo component amplifier (DSP-AMP)Stereo component amplifier communication error
Navigation ECU (NAVI)Navigation ECU communication error
Multi-display (EMV)Multi-display communication error
Television camera ECU
(CAMERA-C)		Television camera ECU communication error
NEXT
END
4.CLEAR DTC

Clear the DTCs .

  • HINT:
  • If "01-DC" is output for only one component, this may not indicate a malfunction.
NEXT
5.RECHECK DTC

Recheck for DTCs and check if the same trouble occurs again.

  • OK:
  • Malfunction disappears.
NG
Go to step 3
OK
END
LEXUS IS250, IS220d / GSE20 ALE20
NAVIGATION
Lexus IS250 IS220d GSE20 ALE20
NAVIGATION SYSTEM