Subaru 2002 IMPREZA Service Manual page 1699

DIAGNOSTIC PROCEDURE FOR NO-DIAGNOSTIC TROUBLE CODE (DTC)
Step
1 CHECK KICK-DOWN SWITCH OPERATION. When the accelerator pedal is
2 CHECK KICK-DOWN SWITCH GROUND
LINE.
1)Disconnect the connector from kick-down
switch.
2)Measure the resistance of harness connec-
tor between kick-down switch and chassis
ground.
Connector & terminal
(B129) No. 1 — Chassis ground:
3 CHECK KICK-DOWN SWITCH.
Measure the resistance for kick-down switch
when depressing the accelerator pedal.
Terminals
No. 1 — No. 2:
4 CHECK KICK-DOWN SWITCH.
Measure the resistance for kick-down switch
when pressing the accelerator pedal.
Terminals
No. 1 — No. 2:
5 CHECK HARNESS CONNECTOR BETWEEN
TCM AND KICK-DOWN SWITCH.
1)Turn the ignition switch to OFF.
2)Disconnect the connectors from kick-down
switch.
3)Measure the resistance of harness connec-
tor between TCM and kick-down switch.
Connector & terminal
(B55) No. 11 — (B129) No. 2:
6 CHECK HARNESS CONNECTOR BETWEEN
TCM AND KICK-DOWN SWITCH.
Measure the resistance of harness connector
between TCM and chassis ground.
Connector & terminal
(B55) No. 11 — Chassis ground:
7 CHECK INPUT SIGNAL FOR TCM.
1)Turn the ignition switch to OFF.
2)Connect the connector to kick-down switch.
3)Turn the ignition switch to ON (engine OFF).
4)Measure the signal voltage for TCM when
depressing the accelerator pedal.
Connector & terminal
(B55) No. 11 (+) — Chassis ground ( − − − − ):
8 CHECK INPUT SIGNAL FOR TCM.
Measure the signal voltage for TCM when
pressing the accelerator pedal.
Connector & terminal
(B55) No. 11 (+) — Chassis ground ( − − − − ):
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
depressed, does "ON" dis-
played?
Is the resistance less than 1
Ω?
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
Is the resistance less than 1
Ω?
Is the resistance more than 1
MΩ?
Is the voltage less than 1 V?
Is the voltage more than 6.5 V? A temporary poor
AT-113
Yes
Go to step CHECK Go to step 2.
POWER MODE
SWITCH. <Ref. to
AT-115, CHECK
POWER MODE
SWITCH., Diag-
nostic Procedure
for No-diagnostic
Trouble Code
(DTC).>
Go to step 3. Repair the open
circuit in harness
between kick-
down switch and
TCM.
Go to step 4. Replace the kick-
down switch. <Ref.
to SP-4, Accelera-
tor Pedal.>
Go to step 5. Replace the kick-
down switch.
Go to step 6. Repair the open
circuit in harness
between TCM and
kick-down switch.
Go to step 7. Repair the short
circuit in harness
between TCM and
chassis ground.
Go to step 8. Go to step 9.
Go to step 9.
contact of the con-
nector and har-
ness may be the
cause. Repair the
harness and con-
nector in TCM.
No