Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Legacy 1995-1999 Approved Subaru Legacy 1998 1998 Service Manual DIAGNOSTICS SECTION BODY ELECTRICAL SYSTEM (ELECTRICAL PARTS) MSA5TCD98L21366
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BODY ELECTRICAL SYSTEM (ELECTRICAL PARTS) [T4A2] 6-2b
4. Power Window
4) Measure signal voltage. 4. Power Window
Terminals
No. 1 -- No. 2: A: DIAGNOSTICS PROCEDURE-1
TROUBLE SYMPTOM
All door windows do not operate.
4A1 : CHECK FUSE AND POWER SUPPLY.
1) Check fuse No. 15.
2) Disconnect connector of power window relay.
3) Turn ignition switch to ON.
4) Measure voltage between power window relay
B3M0257 connector and chassis ground.
Connector & terminal
(B42) No. 1 (+) -- Chassis ground (-):
B3M0254A
: Is the voltage more than 5 V? B6M0390A
: Repair or replace speedometer.
: Is the voltage more than 10 V?
: Replace vehicle speed sensor 2.
: Go to step 4A2.
: Repair wiring harness or replace fuse or
circuit breaker. Go to step 4A2.
4A2 : CHECK FUSE AND POWER SUPPLY.
Measure voltage between power window relay
connector and chassis ground.
Connector & terminal
(B42) No. 2 (+) -- Chassis ground (-):
B6M0390A
: Is the voltage more than 10 V?
: Go to step 4A3.
13
6-2b [T4A3] BODY ELECTRICAL SYSTEM (ELECTRICAL PARTS)
4. Power Window
: Repair wiring harness or replace fuse or 2) Measure resistance of harness connector
circuit breaker. between power window relay and chassis ground.
Connector & terminal
4A3 : CHECK POWER WINDOW RELAY. (B42) No. 3 (+) -- Chassis ground (-):
1) Disconnect connector of power window relay.
2) Connect battery to terminal No. 1 and ground
terminal No. 3.
3) Check continuity between terminals.
When current flows. Between termi- Continuity
nals No. 2 and exists.
No. 4
When current does not Between termi- Continuity does
flow. nals No. 2 and not exist. B6M0392A
No. 4
Between termi- Continuity
nals No. 1 and exists.
: Is the resistance less than 10 ?
No. 3 : Go to step 4A5.
: Repair wiring harness.
4A5 : CHECK HARNESS CONNECTOR
BETWEEN POWER WINDOW RELAY
AND POWER WINDOW MAIN
SWITCH (DRIVER'S DOOR SWITCH).
1) Disconnect connectors of power window relay
and power window main switch.
2) Measure resistance of harness connector
between power window relay and power window
main switch.
Connector & terminal
(B42) No. 4 -- (D7) No. 7:
B6M0391A
: Is power window relay normal?
: Go to step 4A4.
B6M0393A
: Replace power window relay.
: Is the resistance less than 10 ?
4A4 : CHECK GROUND CIRCUIT OF : Go to step 4A6.
POWER WINDOW RELAY.
: Repair wiring harness.
1) Disconnect connector of power window relay.
14
BODY ELECTRICAL SYSTEM (ELECTRICAL PARTS) [T4B3] 6-2b
4. Power Window
4A6 : CHECK POWER WINDOW MAIN 3) Measure voltage between power window main
SWITCH. switch connector and chassis ground.
Connector & terminal
Perform inspection of power window main switch. (D7) No. 7 (+) -- Chassis ground (-):
: Is power window main switch nor-
mal?
: Go to step 4A7.
: Replace power window main switch.
4A7 : CHECK GROUND CIRCUIT OF
POWER WINDOW MAIN SWITCH.
B6M0395A
1) Disconnect connector of power window main
switch. : Is the voltage more than 10 V?
2) Measure resistance of harness connector
: Go to step 4B2.
between power window main switch and chassis
ground. : Go to diagnostics procedure-1.
Connector & terminal
(D7) No. 12 (+) -- Chassis ground (-):
4B2 : CHECK POWER WINDOW MAIN
SWITCH (DRIVER'S DOOR SWITCH).
Perform inspection of power window main switch.
: Is power window main switch nor-
mal?
: Go to step 4B3.
: Replace power window main switch.
B6M0394A
4B3 : CHECK GROUND CIRCUIT OF
: Is the resistance less than 10 ? POWER WINDOW MAIN SWITCH.
: System circuit is normal.
: Repair wiring harness. 1) Disconnect connector of power window main
switch.
B: DIAGNOSTICS PROCEDURE-2 2) Measure resistance of harness connector
between power window main switch and chassis
TROUBLE SYMPTOM ground.
Only driver's door window does not operate.
Connector & terminal
(D7) No. 12 (+) -- Chassis ground (-):
4B1 : CHECK POWER SUPPLY FOR
POWER WINDOW MAIN SWITCH.
1) Disconnect connector of power window main
switch.
2) Turn ignition switch to ON.
B6M0394A
15
6-2b [T4B4] BODY ELECTRICAL SYSTEM (ELECTRICAL PARTS)
4. Power Window
: Is the resistance less than 10 ? 4B6 : CHECK HARNESS CONNECTOR
: Go to step 4B4. BETWEEN POWER WINDOW MAIN
: Repair wiring harness. SWITCH AND DRIVER'S DOOR WIN-
DOW MOTOR.
4B4 : CHECK DRIVER'S DOOR WINDOW
MOTOR. Measure resistance of harness connector between
power window main switch and power window
motor.
1) Disconnect connector of power window motor
(driver's door). Connector & terminal
2) Make sure that power window motor rotates (D7) No. 13 -- (D3) No. 1:
properly when battery voltage is applied to termi-
nals of motor connector.
3) Change polarity of battery connections to termi-
nals to ensure that motor rotates in reverse direc-
tion.
: Is driver side power window motor
normal?
: Go to step 4B5.
: Replace driver side power window
motor. B6M0396A
4B5 : CHECK HARNESS CONNECTOR : Is the resistance less than 10 ?
BETWEEN POWER WINDOW MAIN : System circuit is normal but mechanical
SWITCH AND DRIVER'S DOOR WIN- trouble may be caused in door window
DOW MOTOR. system such as break of window regu-
lator.
1) Disconnect connectors of power window main : Repair wiring harness.
switch and power window motor (driver's door).
2) Measure resistance of harness connector C: DIAGNOSTICS PROCEDURE-3
between power window main switch and power TROUBLE SYMPTOM
window motor. One or more of passenger's door window do not
Connector & terminal operate.
(D7) No. 8 -- (D3) No. 2:
4C1 : CHECK POWER SUPPLY FOR
POWER WINDOW SUB SWITCH
WHICH IS OUT OF ORDER.
1) Disconnect connector of power window sub
switch.
2) Turn ignition switch to ON.
B6M0396A
: Is the resistance less than 10 ?
: Go to step 4B6.
: Repair wiring harness. Go to step 4B6.
16
BODY ELECTRICAL SYSTEM (ELECTRICAL PARTS) [T4C5] 6-2b
4. Power Window
3) Measure voltage between power window sub 4C3 : CHECK POWER SUPPLY FOR
switch connector and chassis ground. POWER WINDOW SUB SWITCH
Connector & terminal WHICH IS OUT OF ORDER.
(D17) No. 5 (+) -- Chassis ground (-):
Measure voltage between power window sub
switch connector and chassis ground.
Connector & terminal
(D25) No. 5 (+) -- Chassis ground (-):
B6M0397A
: Is the voltage more than 10 V? (Front
passenger side)
: Go to step 4C2. B6M0397A
: Repair wiring harness. Go to step 4C2.
: Is the voltage more than 10 V? (Rear
4C2 : CHECK POWER SUPPLY FOR LH side)
POWER WINDOW SUB SWITCH : Go to step 4C4.
WHICH IS OUT OF ORDER. : Repair wiring harness.
Measure voltage between power window sub 4C4 : CHECK POWER WINDOW SUB
switch connector and chassis ground. SWITCH WHICH IS OUT OF ORDER.
Connector & terminal
(D31) No. 5 (+) -- Chassis ground (-): Perform inspection of power window sub switch.
: Is power window sub switch normal?
: Go to step 4C5.
: Replace power window sub switch.
4C5 : CHECK POWER WINDOW MOTOR
WHICH IS OUT OF ORDER.
B6M0397A 1) Disconnect connector of power window motor.
2) Make sure that power window motor rotates
: Is the voltage more than 10 V? (Rear properly when battery voltage is applied to termi-
RH side) nals of motor connector.
3) Change polarity of battery connections to termi-
: Go to step 4C3.
nals to ensure that motor rotates in reverse direc-
: Repair wiring harness. Go to step 4C3. tion.
: Is passenger side power window
motor normal?
: Go to step 4C6.
: Replace passenger side power window
motor.
17
6-2b [T4C6] BODY ELECTRICAL SYSTEM (ELECTRICAL PARTS)
4. Power Window
4C6 : CHECK HARNESS CONNECTOR : Repair wiring harness. Go to step 4C8.
BETWEEN POWER WINDOW SUB
SWITCH AND POWER WINDOW 4C8 : CHECK HARNESS CONNECTOR
MOTOR. BETWEEN POWER WINDOW SUB
SWITCH AND POWER WINDOW
1) Disconnect connectors of power window sub MOTOR.
switch and power window motor.
2) Measure resistance of harness connector Measure resistance of harness connector between
between power window sub switch and power win- power window sub switch and power window
dow motor. motor.
Connector & terminal Connector & terminal
(D17) No. 2 -- (D13) No. 1: (D31) No. 2 -- (D30) No. 1:
B6M0398A B6M0398A
: Is the resistance less than 10 ? : Is the resistance less than 10 ?
(Front passenger side) (Rear RH side)
: Go to step 4C7. : Go to step 4C9.
: Repair wiring harness. Go to step 4C7. : Repair wiring harness. Go to step 4C9.
4C7 : CHECK HARNESS CONNECTOR 4C9 : CHECK HARNESS CONNECTOR
BETWEEN POWER WINDOW SUB BETWEEN POWER WINDOW SUB
SWITCH AND POWER WINDOW SWITCH AND POWER WINDOW
MOTOR. MOTOR.
Measure resistance of harness connector between Measure resistance of harness connector between
power window sub switch and power window power window sub switch and power window
motor. motor.
Connector & terminal Connector & terminal
(D17) No. 4 -- (D13) No. 2: (D31) No. 4 -- (D30) No. 2:
B6M0398A B6M0398A
: Is the resistance less than 10 ? : Is the resistance less than 10 ?
(Front passenger side) (Rear RH side)
: Go to step 4C8. : Go to step 4C10.
18
BODY ELECTRICAL SYSTEM (ELECTRICAL PARTS) [T4C13] 6-2b
4. Power Window
: Repair wiring harness. Go to step 4C10. : Repair wiring harness.
4C10 : CHECK HARNESS CONNECTOR 4C12 : CHECK HARNESS CONNECTOR
BETWEEN POWER WINDOW SUB BETWEEN POWER WINDOW SUB
SWITCH AND POWER WINDOW SWITCH AND MAIN SWITCH.
MOTOR.
1) Disconnect connectors of power window sub
Measure resistance of harness connector between switch and main switch.
power window sub switch and power window 2) Measure resistance of harness connector
motor. between power window sub switch and main
Connector & terminal switch.
(D25) No. 2 -- (D24) No. 1: Connector & terminal
(D17) No. 1 -- (D7) No. 9:
B6M0398A
B6M0399A
: Is the resistance less than 10 ?
(Rear LH side)
: Is the resistance less than 10 ?
: Go to step 4C11. (Front passenger side)
: Repair wiring harness. Go to step 4C11. : Go to step 4C13.
: Repair wiring harness. Go to step 4C13.
4C11 : CHECK HARNESS CONNECTOR
BETWEEN POWER WINDOW SUB
SWITCH AND POWER WINDOW 4C13 : CHECK HARNESS CONNECTOR
MOTOR. BETWEEN POWER WINDOW SUB
SWITCH AND MAIN SWITCH.
Measure resistance of harness connector between
power window sub switch and power window Measure resistance of harness connector between
motor. power window sub switch and main switch.
Connector & terminal Connector & terminal
(D25) No. 4 -- (D24) No. 2: (D17) No. 3 -- (D7) No. 14:
B6M0398A B6M0399A
: Is the resistance less than 10 ? : Is the resistance less than 10 ?
(Rear LH side) (Front passenger side)
: Go to step 4C12. : Go to step 4C14.
19
6-2b [T4C14] BODY ELECTRICAL SYSTEM (ELECTRICAL PARTS)
4. Power Window
: Repair wiring harness. Go to step 4C14. 4C16 : CHECK HARNESS CONNECTOR
BETWEEN POWER WINDOW SUB
4C14 : CHECK HARNESS CONNECTOR SWITCH AND MAIN SWITCH.
BETWEEN POWER WINDOW SUB
SWITCH AND MAIN SWITCH. Measure resistance of harness connector between
power window sub switch and main switch.
Measure resistance of harness connector between
Connector & terminal
power window sub switch and main switch.
(D25) No. 1 -- (D7) No. 10:
Connector & terminal
(D31) No. 1 -- (D7) No. 6:
B6M0468A
B6M0467A : Is the resistance less than 10 ?
(Rear LH side)
: Is the resistance less than 10 ? : Go to step 4C17.
(Rear RH side)
: Repair wiring harness. Go to step 4C17.
: Go to step 4C15.
: Repair wiring harness. Go to step 4C15. 4C17 : CHECK HARNESS CONNECTOR
BETWEEN POWER WINDOW SUB
4C15 : CHECK HARNESS CONNECTOR SWITCH AND MAIN SWITCH.
BETWEEN POWER WINDOW SUB
SWITCH AND MAIN SWITCH. Measure resistance of harness connector between
power window sub switch and main switch.
Measure resistance of harness connector between Connector & terminal
power window sub switch and main switch.
(D25) No. 3 -- (D7) No. 5:
Connector & terminal
(D31) No. 3 -- (D7) No. 11:
B6M0468A
B6M0467A : Is the resistance less than 10 ?
(Rear LH side)
: Is the resistance less than 10 ? : Go to step 4C18.
(Rear RH side)
: Repair wiring harness.
: Go to step 4C16.
: Repair wiring harness. Go to step 4C16.
20
BODY ELECTRICAL SYSTEM (ELECTRICAL PARTS) [T5A2] 6-2b
5. Remote Controlled Rearview Mirror
4C18 : CHECK POWER WINDOW MAIN 5. Remote Controlled Rearview
SWITCH. Mirror
Perform inspection of power window main switch. A: DIAGNOSTICS PROCEDURE
5A1 : CHECK FUSE AND POWER SUPPLY
: Is power window main switch nor- FOR REMOTE CONTROLLED REAR-
mal? VIEW MIRROR SWITCH.
: Go to step 4C19.
: Replace power window main switch. 1) Check fuse No. 3.
2) Disconnect connector of rearview mirror switch.
4C19 : CHECK GROUND CIRCUIT OF 3) Turn ignition switch to ON.
POWER WINDOW MAIN SWITCH. 4) Measure voltage between rearview mirror
switch connector and chassis ground.
1) Disconnect connector of power window main Connector & terminal
switch. (i6) No. 4 (+) -- Chassis ground (-):
2) Measure resistance of harness connector
between power window main switch and chassis
ground.
Connector & terminal
(D7) No. 12 (+) -- Chassis ground (-):
B6M0400A
: Is the voltage more than 10 V?
: Go to step 5A2.
: Replace fuse or repair wiring harness.
B6M0394A
5A2 : CHECK GROUND CIRCUIT OF REAR-
: Is the resistance less than 10 ? VIEW MIRROR SWITCH.
: System circuit is normal but mechanical
trouble may be caused in door window
system such as break of window regu- 1) Disconnect connector of rearview mirror switch.
lator. 2) Measure resistance of harness connector
between rearview mirror switch and chassis
: Repair wiring harness. ground.
Connector & terminal
(i6) No.2 (+) -- Chassis ground (-):
B6M0401A
: Is the resistance less than 10 ?
21
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