U1128

DTC U1128 Lost Communication with Front Climate Control Seat ECU RH

DESCRIPTION

DTC Detection Condition:

This DTC is output when LIN communication between the front seat climate control ECU RH and outer mirror switch stops for 10 seconds or more.

Wiring Diagram:

Step 1-3:

Step 3 (Continued)-6:

Step 6 (Continued):

INSPECTION PROCEDURE

NOTE: When using the intelligent tester (with CAN VIM) or Techstream with the engine switch off to troubleshoot:
Connect the intelligent tester (with CAN VIM) or Techstream to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the tester and vehicle begins.

HINT: When DTC U1127, U1128 and U1129 are output simultaneously, perform troubleshooting for "Driver Side Switch Module LIN Communication Malfunction" first.