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DTC B1222 Door Lock Switch Circuit on Driver Door: Description

This DTC notifies how the switch works as follows:

If the DTC is not output when operating the switch, this means there is a failure of the switch contact. If the DTC is output when not operating the switch, this means the switch is stuck. When a malfunction is found using this diagnosis, inspect each switch. Then, replace the switch if there is a problem, or check the wire harness if there is no problem.

DTC DETECTION CONDITION

DTC No. DTC Detection Condition Trouble Area
B1222 Sticking of door key lock and unlock switch
  • Door lock control switch
  • Door key lock and unlock switch
  • Wire harness

HINT:

Refer to switch inspection (see DTC B1222 DOOR LOCK SWITCH CIRCUIT ON DRIVER DOOR ).