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                                                                                                                                 DI-317
                                                   DIAGNOSTICS         -   ABS WITH EBD & BA & TRAC & VSC SYSTEM
                                                                                                                                   DI6OA-02




 DTC                    C1350 / 51                          ABS & VSC Actuator Pump Motor Fail-
                                                            ure

CIRCUIT DESCRIPTION
   DTC No.                          DTC Detecting Condition                                              Trouble Area
                   When any of the following 1. through 3. is detected.
                   1. No motor voltage supply after actuation of the motor
                      relay.
                                                                                  S ABS & VSC actuator pump motor
  C1350 / 51       2. A high level of motor voltage with no actuation of the
                                                                                  S ABS & VSC actuator pump motor circuit
                      motor relay.
                   3. The pump motor voltage is high level for a certain time
                      after the motor relay has elapsed.


WIRING DIAGRAM

                                                                                                                        Skid Control ECU
                                                                   3                                                   62
                              GR-L                                                      GR-L
                                                                 ED1                                                  V14 MR
                Engine RoomR/B No. 7
                  ABS MTR Relay                                                                                        57
                   4        3                                     9
                                                 GR-R                                   GR-R
               7                7                                ED1                                                  V14 R+
                                                                                  ABS & VSC Actuator
                    1              2                               6               6          5
                                                    L                       L
               7                        7                        ED1               V8        V8

                                                                                                               IG
               R/B No. 7                                      Engine Room R/B No. 7
                                                                    ABS No. 4                                    82
                                                                                                         4
                                                        L                                       L-W         L-W
                                                               7                          7             ED1     V14 MT
                                                                       1            2
                                                                            ABS
                                                                       2            1
                             W
                                                               7                          7


                                                                           FL Block
                                                        B-L            1    140A 2             B-G
                                         FL Main                            ALT
             Battery
                                                                                                                                    F13451




2001 SIENNA (RM787U)

                                                                                   Author :                  Date :                471
DI-318
                                    DIAGNOSTICS   -   ABS WITH EBD & BA & TRAC & VSC SYSTEM

INSPECTION PROCEDURE

   1     Check operation of ABS & VSC actuator pump motor.

                                          PREPARATION:
                       5                  Disconnect the connector from the ABS & VSC actuator.
                                          CHECK:
                                          Connect positive     lead to terminal 6 and negative   lead to
                                          terminal 5 of the ABS & VSC actuator, check that the pump mo-
          6
                                          tor is operated.
                                          OK:
                                                 The running sound of the pump motor should be
                                 F13439          heard.

                                            NG        Replace ABS & VSC actuator.


  OK



   2     Check for open circuit in harness and connector between ABS MTR relay, ABS & VSC
         actuator and ECU (See page IN-31 ).



                                            OK        Check and replace skid control ECU.


  NG



  Repair or replace harness or connector.




2001 SIENNA (RM787U)

                                                             Author :              Date :          472



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