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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 512 (ELECTRONICALLY CONTROLLED BRAKE SYSTEM - DIAGNOSIS)DTC C1203/95: ENGINE CONTROL SYSTEM COMMUNICATION CIRCUIT MALFUNCTIONINSPECTION PROCEDURE
2004 Toyota Matrix XR, FWD, Standard

Inspection Procedure

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure
WARNING: This page is about a different car, the 2004 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
  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  ).
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.