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Home >> Toyota >> 2004 >> Prius >> Repair and Diagnosis >> Brakes >> Traction Control >> Electronically Controlled Brake System - Diagnosis >> DTC C1203/95: Engine Control System Communication Circuit Malfunction >> Inspection Procedure

Inspection Procedure

  1. CHECK DTC (HYBRID CONTROL SYSTEM (SEE  DTC CHECK/CLEAR  ) 
    1. Is DTC output for HYBRID CONTROL SYSTEM ?

      Result: 

      DIAGNOSTIC TROUBLE CODES OUTPUT

      Result Go To
      DTC is not output A
      DTC is output B

    B: REPAIR HYBRID CONTROL SYSTEM (SEE  DIAGNOSTIC TROUBLE CODE CHART  ) 

    A: GO TO NEXT STEP 

  2. CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) 
  1. Check if C1300 - is output.

Result: 

DIAGNOSTIC TROUBLE CODES OUTPUT

Result Go To
C1300/- is not output A
C1300/- is output B

B: GO TO DTC C1300 - (SEE  DTC C1300: MALFUNCTION IN ECU   ) 

REPLACE SKID CONTROL ECU (SEE  SKID CONTROL ECU ASSY  ) 

NOTE: When replacing the skid control ECU assy, perform initialization of the linear solenoid valve and calibration (see INITIALIZATION  ).