LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 268 (Abs - Diagnostics) >> Diagnostic Tests >> DTC C1203/53: ECM Communication Circuit Malfunction >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Is DTC Output For ECM? GENERAL INFORMATION .

    YES  : Repair engine control system according to the output code.

    NO  : Go to next step.

  2. Check For Open And Short Circuit In Harness And Connector Between ECM, Translate ECU And Skid Control ECU. See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  . 
    1. NG  : Repair or replace harness or connector.
    2. OK  : Go to step  3.
  3. Check Brake Fluid Level. 

    Check  : the amount of brake fluid in the reservoir.

    1. NG  : Check for fluid leakage, repair brake line and add fluid.
    2. OK  : Go to step  4.
  4. Check Brake Fluid Level Warning Switch. 
    1. NG  : Replace brake fluid level warning switch.
    2. OK  : Go to step  5.
  5. Check For Open And Short Circuit In Harness And Connector Between Brake Fluid Level Warning Switch And Translate ECU. See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  .  .
    1. NG  : Repair or replace harness or connector.
    2. OK  : Troubleshoot according to the DTC chart of translate ECU.
scientia non olet · About LEMON Manuals