Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 1995-1999 Approved Subaru Legacy 1998 1998 Service Manual DIAGNOSTICS SECTION ON-BOARD DIAGNOSTICS II SYSTEM MSA5TCD98L21317

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2-7   [T6A1]                ON-BORAD          DIAGNOSTICS II SYSTEM
6. Basic Diagnostic Procedure


6. Basic Diagnostic Procedure                                6A4 :   PERFORM THE DIAGNOSIS.
A: BASIC DIAGNOSTIC
                                                             1) Inspect using "10. Diagnostics Chart with
PROCEDURE FOR ENGINE                                         Trouble Code for LHD Vehicles".  "11. Diagnostics Chart with Trouble
6A1 :    CHECK ENGINE START FAILURE.                         Code for RHD Vehicles". 
                                                             NOTE:
1) Ask the customer when and how the trouble                 Carry out the basic check, only when DTC about
occurred using the interview check list.                                                      to 2-7 [T6B0].>
2) Start the engine.
                                                             2) Repair the trouble cause.
         : Does the engine start?                            3) Perform the clear memory mode. 
         : Inspection using "8. Diagnostics for              4) Perform the inspection mode. 
           [T800].>                                                  : Does the Subaru Select Monitor or
                                                                       OBD-II general scan tool indicate
                                                                       DTC?
6A2 :    CHECK ILLUMINATION OF CHECK
         ENGINE MALFUNCTION INDICATOR                                : Inspect using "10. Diagnostics Chart
         LAMP (MIL).                                                   with Trouble Code for LHD Vehicles".
                                                                       , "11. Diagnostics
                                                                       Chart with Trouble Code for RHD
         : Does CHECK ENGINE malfunction                               Vehicles ". 
           indicator lamp illuminate?                                : Complete the diagnosis.
         : Go to step 6A3.
         : Inspection using "9. General Diagnos-             B: BASIC CHECK ITEMS FOR AT
           tics Table".                 When trouble code about automatic transmission
                                                             is shown on display, carry out the following basic
6A3 :    CHECK INDICATION OF DTC ON DIS-                     check. After that, carry out the replacement or
         PLAY.                                               repair work.
                                                             1) ATF level check 
                                                             2) Differential gear oil level check 
2) Connect the Subaru Select Monitor or the                  3) ATF leak check 
OBD-II general scan tool to data link connector.             4) Differential gear oil leak check 
Select Monitor or OBD-II general scan tool switch            5) Brake band adjustment 
to ON.                                                       6) Stall test 
4) Read DTC on the Subaru Select Monitor or                  7) Line pressure test 
OBD-II general scan tool.                                    8) Transfer clutch pressure test 
           OBD-II general scan tool indicate                 9) Time lag test 
           DTC?                                              10) Road test 
                                                             11) Shift characteristics 
         : Go to step 6A4.
         : Repair the related parts.
NOTE:
If DTC is not shown on display although the MIL
illuminates, perform diagnostics of MIL (CHECK
ENGINE malfunction indicator lamp) circuit or com-
bination meter. 




                                                        70
        ON-BORAD DIAGNOSTICS II SYSTEM               [T6B0] 2-7
                                     6. Basic Diagnostic Procedure


MEMO:




                      71
2-7   [T6C1]                ON-BORAD            DIAGNOSTICS II SYSTEM
6. Basic Diagnostic Procedure


C: CHECK LIST FOR INTERVIEW
1. CHECK LIST NO. 1
Check the following items when problem has occurred.
NOTE:
Use copies of this page for interviewing customers.
Customer's name                                            Engine no.
Date of sale                                               Fuel brand
Date of repair                                             Odometer reading                    km
Vin no.                                                                                      miles
Weather                   Fine
                          Cloudy
                          Rainy
                          Snowy
                          Various/Others:
Outdoor temperature                              

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