Technical Description (Comment)

Current trouble 

• The ETACS-ECU, the ambient air temperature sensor, or connector(s) or wiring between the two may be defective.

Past trouble 

• If DTC B1034 or B1035 is set as a past trouble, carry out diagnosis with particular emphasis on wiring and connector(s) between the ETACS-ECU and the ambient air temperature sensor. If the connectors and wiring are normal, and obviously the ECU is the cause of the trouble, replace the ECU. If in doubt, do not replace the ECU.