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DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
P156400ASCD SW
(ACC switch)
ADiagnosis condition—
Signal (terminal)ACC steering switch signal
ThresholdAn excessively high voltage signal from the ACC steering switch is sent to ECM.
Diagnosis delay time—
BDiagnosis condition—
Signal (terminal)ACC steering switch signal
ThresholdECM detects that input signal from the ACC steering switch is out of the specified range.
Diagnosis delay time—
CDiagnosis condition—
Signal (terminal)ACC steering switch signal
ThresholdECM detects that the ACC steering switch is stuck ON.
Diagnosis delay time—
 
 
POSSIBLE CAUSE
  • Harness or connectors
    (ACC steering switch circuit is open or shorted.)
  • ACC steering switch
  • ECM
 
 
FAIL-SAFE
Not applicable
 
 
DTC Confirmation Procedure
1.CHECK DTC PRIORITY
If DTC P1564 is displayed with other DTC, first perform the trouble diagnosis for other DTC.
Is applicable DTC detected?
Perform diagnosis of applicable. Refer to DTC Index.
.
 
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at least 10 seconds.
: .
 
3.PERFORM DTC CONFIRMATION PROCEDURE
  1. Turn ignition switch ON.
  2. Wait at least 10 seconds.
  3. Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.
  4. Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.
  5. Press RES+ switch for at least 10 seconds, then release it and wait at least 10 seconds.
  6. Press SET- switch for at least 10 seconds, then release it and wait at least 10 seconds.
  7. Press DISTANCE switch for at least 10 seconds, then release it and wait at least 10 seconds.
  8. Check DTC.
Is DTC detected?
Proceed to DTC Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END