DTCs are not output.
NG -- 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
OK -- 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
From 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.
INSPECTION PROCEDURE
PROCEDURE
1. CHECK FOR DTC
(a) Clear the DTCs See: Lighting and Horns/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
(b) Check for DTCs See: Lighting and Horns/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
OK:
DTCs are not output.
NG -- 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
OK -- 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
Part 1
NETWORKING: CAN COMMUNICATION SYSTEM: U1002: Lost Communication with Gateway Module (Power Management1)
U1002 - Lost Communication with Gateway Module (Power Management1)
DESCRIPTION
* The power management control ECU will store this DTC when no signals can be received from the ECUs that have been memorized as those
that are connected to the CAN No. 2 bus.
* When the power management control ECU receives a response signal from the ECUs connected to the CAN No. 2 bus, the power
management control ECU recognizes and memorizes that the ECU is connected to the CAN No. 2 bus. Based on this memorized data, the
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