HINT
If CAN communication system DTCs are stored, they may also be stored in other systems.
INSPECTION PROCEDURE
PROCEDURE
1. CHECK DTC OUTPUT
(a) Clear the DTCs See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Rear View Monitor System (w/ Side Monitor System).
(b) Check for DTCs See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Rear View Monitor System (w/ Side Monitor System).
Result:
HINT
* If the CAN communication system has been inspected and repaired in other systems, the DTCs will not be output when
rechecking for DTCs.
* If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection
again, even though the DTC was not output when rechecking for DTCs See: Accessories and Optional Equipment/Antitheft
and Alarm Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/How To Proceed With
Troubleshooting.
B -- USE SIMULATION METHOD TO CHECK See: Accessories and Optional Equipment/Antitheft and Alarm
Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/How To Proceed With Troubleshooting
A -- GO TO CAN COMMUNICATION SYSTEM See: Powertrain Management/Computers and Control Systems/Information
Bus/Testing and Inspection/Initial Inspection and Diagnostic Overview/CAN Communication System/How to Proceed With
Troubleshooting
Up to 08/2009
LIGHTING (EXT): LIGHTING SYSTEM: U0101,U0073,U0100,U0126,U0129,U0130,U0142,U0163,U0182,U1000,U1121: Lost
Communication with ECM
U1121 - Lost Communication with Driver Seat Module
DESCRIPTION
The DTCs are stored when the CAN communication system is malfunctioning.
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