Subaru Impreza 2002 Service Manual page 3734

DIAGNOSTICS CHART WITH TROUBLE CODE
Step
1 CHECK POWER SUPPLY.
1)Turn the ignition switch to OFF.
2)Disconnect the harness connector from
cruise control actuator.
3)Turn the ignition switch to ON.
4)Turn the cruise control main switch to ON.
5)Measure the voltage between cruise control
actuator harness connector terminal and chas-
sis ground.
Terminals
(B7) No. 4 (+) — Chassis ground ( − − − − ):
2 CHECK GROUND CIRCUIT OF ACTUATOR.
1)Turn the ignition switch and cruise control
main switch to OFF.
2)Measure the resistance between cruise con-
trol actuator harness connector terminal and
chassis ground.
Terminals
(B7) No. 6 — Chassis ground:
3 MEASURE RESISTANCE OF ACTUATOR.
Measure the resistance of cruise control actua-
tor motor.
Terminals
No. 4 — No. 1:
No. 4 — No. 2:
No. 4 — No. 5:
4 CHECK HARNESS BETWEEN ACTUATOR
AND CRUISE CONTROL MODULE.
1)Disconnect the harness connector from
cruise control module.
2)Measure the resistance between cruise con-
trol module harness connector terminal and
cruise control actuator harness connector ter-
minal.
Connector & terminal
(B7) No. 1 — (B94) No. 7:
5 CHECK HARNESS BETWEEN ACTUATOR
AND CRUISE CONTROL MODULE.
Measure the resistance between cruise control
module harness connector terminal and cruise
control actuator harness connector terminal .
Connector & terminal
(B7) No. 5 — (B94) No. 5:
CRUISE CONTROL SYSTEM (DIAGNOSTICS)
Check
Is the voltage more than 10 V? Go to step 2.
Is the resistance less than 10
Ω?
Is the resistance approximately
5 Ω?
Is the resistance less than 10
Ω?
Is the resistance less than 10
Ω?
CC-35
Yes
Check the harness
for open or short
between cruise
control module
and cruise control
actuator.
Go to step 3. Repair the har-
ness.
Go to step 4. Replace the cruise
control actuator.
<Ref. to CC-3,
Actuator.>
Go to step 5. Repair the har-
ness.
Replace the cruise Repair the har-
control module. ness.
<Ref. to CC-4,
Cruise Control
Module.>
No