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cic12103


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DI-264
                                                  DIAGNOSTICS        -   ABS WITH EBD & BA & TRAC & VSC SYSTEM
                                                                                                                                      DI8XQ-02




  DTC                C1210 / 36                         Zero Point Calibration of Yaw Rate
                                                        Sensor Undone

CIRCUIT DESCRIPTION
    DTC No.                        DTC Detecting Condition                                                Trouble Area
                  When either the condition 1. or 2. is detected:
                  1. After battery terminal was connected, ECU terminal IG1
                                                                                 S Yaw rate sensor
                     is turned ON for the first time. Within 15 sec. the shift
   C1210 / 36                                                                    S Yaw rate sensor circuit
                     lever is moved to any position except P range.
                                                                                 S PNP switch circuit (P range)
                  2. When the yaw rate sensor zero point recorded in ECU is
                     deleted.


WIRING DIAGRAM
                                                                                                                   Skid Control ECU
                Y1                                                                                                18
                                                                                   BR-B
                Yaw Rate Sensor                                                                               V18 YSS
                                                                (Shielded)
                                                                                                                  28
                                                                     W
                       YAW2                                                                                   V18 YAW
                                  1

                                                                                                               27
                                                                     B
                      GYAW                                                                                    V18 GYAW
                                  3

                                                                                                               9
                                                                     R
                        VYS                                                                                   V18 VYS
                                  5

                                                                                                              19
                                                                     Y
                          YD                                                                                  V18 YD
                                  4

                                                                                                                                       F14346




2002 4RUNNER (RM887U)

                                                                                   Author :                       Date :                440
                                                                                                DI-265
                                  DIAGNOSTICS   -   ABS WITH EBD & BA & TRAC & VSC SYSTEM

INSPECTION PROCEDURE

   1    Perform zero point calibration of yaw rate sensor (See page DI-224 ).




   2    Is DTC still output?

Check DTC on page DI-224 .

                                          NO        No problem.


  YES



   3    Check output value of yaw rate sensor.

                                        In case of using the hand-held tester:
                                        PREPARATION:
                                        (a) Remove the 2 bolts and the yaw rate sensor with the con-
                                              nector still connected.
                                        (b) Connect the hand-held tester to DLC3.
                                        (c) Turn the ignition switch ON and push the hand-held tes-
                                              ter main switch ON.
                                        (d) Select the DATALIST mode on the hand-held tester.
                               F02808   CHECK:
                                        Check that the yaw rate sensor value of the yaw rate sensor dis-
                                        played on the hand-held tester is changing: Place the yaw rate
                                        sensor vertically to the ground and turn the sensor pivoted on
                                        its center.
                                        OK:
                                              Yaw rate value must be changing.
                                              (Reference)
                                              When the yaw rate sensor is stationary:
                                              Output value: 



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