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DTC Description
 
 
DTC DETECTION LOGIC
ECM detects a difference between signals from ADAS control unit is out of specified range.
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
P156800ADAS COMMAND VALUE
(ADAS function)
Diagnosis condition—
Signal (terminal)CAN communication signal
ThresholdECM detects a difference between signals from ADAS control unit is out of specified range
Diagnosis delay time—
 
 
POSSIBLE CAUSE
  • Harness or connectors (The CAN communication line is open or shorted.)
  • ADAS control unit
  • ECM
 
 
FAIL-SAFE
Not applicable
 
 
DTC Confirmation Procedure
1.CHECK DTC PRIORITY
If DTC P1568 is displayed with DTC UXXXX, P0605 or P0607, first perform the confirmation procedure for DTC UXXXX, P0605 or P0607.
Is applicable DTC detected?
Perform diagnosis of applicable.
.
 
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.
TESTING CONDITION:
Step 4 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.
: With ASCD: .
: With ACC: .
 
3.PERFORM DTC CONFIRMATION PROCEDURE
Check DTC.
Is DTC detected?
Refer to DTC Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END
 
4.PERFORM DTC CONFIRMATION PROCEDURE
  1. Turn ignition switch ON.
  2. Press MAIN switch on ACC steering switch.
  3. Drive the vehicle at more than 40 km/h (25 MPH).
    cautionAlways drive vehicle at a safe speed.
  4. Press SET- switch.
  5. Check DTC.
Is DTC detected?
Refer to DTC Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END