Subaru Impreza 2002 Service Manual page 3511

INSTRUMENTATION/DRIVER INFO
4. CHECK TRANSMISSION CONTROL MODULE
Step
1 CHECK TRANSMISSION CONTROL MOD-
ULE SIGNAL.
1)Lift-up the vehicle and support it with safety
stands.
Warning:
Be careful not to get caught in the running
wheels.
2)Drive the vehicle faster than 10 km/h (6
MPH).
3)Measure the voltage between transmission
control module connector and chassis ground.
Connector & terminal
(B56) No. 17 (+) — Chassis ground ( − − − − ):
2 CHECK HARNESS BETWEEN TRANSMIS-
SION CONTROL MODULE AND COMBINA-
TION METER.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from transmission
control module and combination meter.
3)Measure the resistance between transmis-
sion control module harness connector and
combination meter harness connector.
Connector & terminal
(B56) No. 17 — (i10) No. 2:
COMBINATION METER SYSTEM
Is the voltage less than 1 V
←→ more than 4 V?
Is the resistance less than 10
Ω?
IDI-8
Check
Go to step 2.
Check the speed
meter. <Ref. to
IDI-17,
REMOVAL,
Speedometer.>
Yes No
Check the trans-
mission control
module. <Ref. to
AT-2, Basic Diag-
nostic Procedure.>
Repair the wiring
harness.