DTC DETECTION LOGIC

DTC
Items
(CONSULT-III screen terms)
Diagnostic item is detected when...
Possible causes
B257B
AMB TEMP SEN SHORT
The ambient sensor recognition temperature is too high.
  • Ambient sensor
  • A/C auto amp.
  • Harness and connector
    (Short in the ambient sensor circuit)
B257C
AMB TEMP SEN OPEN
The ambient sensor recognition temperature is too low.
  • Ambient sensor
  • A/C auto amp.
  • Harness and connector
    (Open in the ambient sensor circuit)

 
 DTC CONFIRMATION PROCEDURE

 
 1.PERFORM SELF-DIAGNOSIS