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DTC Description
 
 
DTC DETECTION LOGIC
DTC No. M.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
U2177–87CAN comm err (PSCU)
[Controller area network communication error (power steering control module)]
Diagnosis conditionWhen ignition switch is ON
Signal (terminal)CAN communication signal
ThresholdCommunication error
Diagnosis delay time2 seconds or more
 
 
POSSIBLE CAUSE
CAN communication system (power steering control module)
 
 
FAIL-SAFE
The system using the CAN communication signal from control unit which cannot communicate does not function.
 
 
CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With M.U.T.-III SE
  1. Turn ignition switch ON.
  2. Turn ignition switch OFF and wait at least 4 minutes or more.
  3. Turn ignition switch ON and wait at least 1 minute or more.
  4. Select “Self Diagnostic Result” mode of “MULTI AV” using M.U.T.-III SE.
  5. Check DTC.
Is DTC “U2177–87” detected?
Proceed to Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident
-2Confirmation after repair: INSPECTION END