|DTC Code||DTC Detection Condition||Trouble Area|
|U1124||There is no communication from the active headrest control ECU RH (front seat headrest assembly RH).||
For vehicles with a pre-crash intelligent headrest (for 5-passenger with Ottoman).
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
CHECK HARNESS AND CONNECTOR (ACTIVE HEADREST CONTROL ECU RH - BATTERY AND BODY GROUND)
Rear view of wire harness connector
(to Active Headrest Control ECU RH [Front Seat Headrest Assembly RH])
Disconnect the active headrest control ECU RH (front seat headrest assembly RH) connector.
Measure the voltage according to the value(s) in the table below.
Measure the resistance according to the value(s) in the table below.
REPAIR OR REPLACE HARNESS OR CONNECTOR