Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 abs pst

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DI-226
                                           DIAGNOSTICS   -   ANTI-LOCK BRAKE SYSTEM
                                                                                                                        DI03Z-13


PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the DTC check but the problem still occurs, check the circuits for each
problem symptom in the order given in the table below and proceed to the relevant troubleshooting page.
                             Symptom                                          Suspect Area                         See page
                                                     Only when 1. - 4. are all normal and the problem is still
                                                     occurring, replace the skid control ECU.
                                                     3. Check the DTC reconfirming that the normal code is
ABS does not operate                                    output.                                                    DI-220
                                                     4. Power source circuit                                       DI-239
                                                     5. Speed sensor circuit                                       DI-233
                                                     6. Hydraulic circuit for leakage.                             DI-256
                                                     Only when 1. - 5. are all normal and the problem is still
                                                     occurring, replace the skid control ECU.
                                                     1. Check the DTC reconfirming that the normal code is
                                                        output.                                                    DI-220
ABS does not operate efficiently
                                                     2. Speed sensor circuit                                       DI-233
                                                     3. Stop light switch circuit                                  DI-243
                                                     4. Power source circuit                                       DI-239
                                                     5. Hydraulic circuit for leakage                              DI-256
                                                     1. ABS warning light circuit                                  DI-250
ABS warning light abnormal
                                                     2. Skid control ECU                                           DI-247

                                                     Only when 1. and 2. are all normal and the problem is still
                                                     occurring, replace the ABS actuator assembly.
DTC check cannot be done
                                                     1. ABS warning light circuit                                  DI-250
                                                     2. Tc terminal circuit                                        DI-252

                                                     1. Ts terminal circuit                                        DI-254
Speed sensor signal check cannot be done
                                                     2. Skid control ECU                                           DI-247




 2001 SIENNA (RM787U)

                                                                       Author :                     Date :                380

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