Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Echo 2000-2002 Approved techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 02echorm be defsy insp

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BE-56
                                     BODY ELECTRICAL          -    DEFOGGER SYSTEM
                                                                                                                                    BE1FB-01


                                                 INSPECTION
                                                 1.       w/o Defogger timer:
                                                          INSPECT DEFOGGER SWITCH CONTINUITY
                                                         Switch position            Tester connection               Specified condition
                                                          Switch OFF                           -                No continuity
                                                           Switch ON                         3-4                Continuity
                                                       Illumination circuit                  4-5                Continuity

                                        I12375   If continuity is not as specified, replace the switch.

                                                 2.    w/ Defogger timer:
                                                       INSPECT DEFOGGER TIMER OPERATION
                            4 3
                                                 (a) Connect the positive (+) lead from the battery to terminal
                                      2                3 and negative (-) lead to terminal 4.
                                                 (b) Connect the positive (+) lead from the battery to terminal
                                                       2 through a 3.4 W test bulb.
                                                 (c) Turn the defogger switch ON and check that the indicator
                                                       light and test bulb light up for 12 for 18 minutes, then the
                                        I12376         indicator light and test bulb lights go out.
                                                 If operation is not as specified, replace the switch.
                                                 3.    w/ Defogger timer:
 Wire harness side:
                                                       INSPECT DEFOGGER SWITCH CIRCUIT
                                                 Disconnect the connector from the switch and inspect the con-
                                                 nector on wire harness side, as shown in the chart.




                                        I12372




        Tester connection                              Condition                                         Specified condition
           2 - Ground             Constant                                               Continuity
           4 - Ground             Defogger switch OFF                                    No continuity
           4 - Ground             Defogger switch ON                                     Continuity
           3 - Ground             Ignition switch LOCK or ACC                            No voltage
           3 - Ground             Ignition switch ON                                     Battery positive voltage
                                                 If the circuit is not as specified, replace the switch.



                                                 4.       INSPECT DEFOGGER RELAY CONTINUITY
 2        1                                                Condition                Tester connection               Specified condition
                                                            Constant                         1-2                Continuity
                        3              5
                                                       Apply B + between
                  5                                                                          3-5                Continuity
                                                        terminal 1 and 2.
                        1              2
                                                 If Continuity is not as specified, replace the relay.

              3
                                        I01200



2002 ECHO (RM884U)

                                                                              Author :                     Date :                     1259
                                                                                                                        BE-57
                                       BODY ELECTRICAL        -   DEFOGGER SYSTEM

                                                     5.  INSPECT DEFOGGER WIRE
                                                     NOTICE:
                                                      S  When cleaning the glass, use a soft, dry cloth, and
   Tester Probe
                                                         wipe the glass in the direction of the wire. Take care
                                  Heat WIre              not to damage the wires.
                                                      S  Do not use detergents or glass cleaners with abrasive
                       Tin Foil
                                                         ingredients.
                                                      S  When measuring voltage, wind a piece of tin foil
                                            I01291       around the top of the negative probe and press the foil
                                                         against the wire with your finger, as shown.
                          At Center                  (a) Turn the ignition switch ON.
                                                     (b) Turn the defogger switch ON.
                                                     (c) Inspect the voltage at the center of each heat wire, as
                                                         shown.
                                                                   Voltage                             Criteria
                                                                  Approx. 5V                  Okay (No break in wire)
                                                              Approx. 10V or 0V                    Broken wire
                                                     HINT:
                                            I01292
                                                     If there is approximately 10 V, the wire is broken between the
                                                     center of the wire and the positive (+) end. If there is no voltage,
                                  Several            the wire is broken between the center of the wire and ground.
                       0 Volts
                                  Volts              (d) Place the voltmeter positive (+) lead against the defogger
                                                            positive (+) terminal.
                      Broken
                      Wire                           (e) Place the voltmeter negative (-) lead with the foil strip
                                                            against the heat wire at the positive (+) terminal end and
                                                            slide it toward the negative (-) terminal end.
                                                     (f)    The point where the voltmeter deflects from zero to sever-
                                                            al V is the place where the heat wire is broken.
                                            I01293
                                                     HINT:
                                                     If the heat wire is not broken, the voltmeter indicates 0 V at the
                                                     positive (+) end of the heat wire but gradually increases to about
                                                     12 V as the meter probe is moved to the other end.




                                                     6.    IF NECESSARY, REPAIR DEFOGGER WIRE
               Repair Point                          (a)   Clean the broken wire tips with grease, wax and silicone
                                                           remover.
                                                     (b)   Place the masking tape along both sides of the wire for
                                                           repair.
                                   Broken
                                                     (c)   Thoroughly mix the repair agent (Dupont paste No.
                                   Wire
                                                           4817).
Marking Tape

                                            I01294



2002 ECHO (RM884U)

                                                                         Author :             Date :                     1260
BE-58
                     BODY ELECTRICAL   -   DEFOGGER SYSTEM

                               (d)   Using a fine tip brush, apply a small amount of the agent
                                     to the wire.
                               (e)   After a few minutes, remove the masking tape.
                               (f)   Do not repair the defogger wire for at least 24 hours.




                      I01295




2002 ECHO (RM884U)

                                                 Author :             Date :             1261



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