Subaru 2002 IMPREZA Service Manual page 1443

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
1 CHECK HARNESS BETWEEN ECM AND
TUMBLE GENERATOR VALVE ACTUATOR
CONNECTOR.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from tumble gen-
erator valve connector.
3)Measure the voltage between tumble gener-
ator valve actuator and chassis ground.
Connector & terminal
(E55) No. 1 (+) — Chassis ground (-):
(E55) No. 2 (+) — Chassis ground (-):
Check
Is the voltage less than 5 V?
EN(TURBO)-283
ENGINE (DIAGNOSTICS)
Yes
Replace the tum- Repair the battery
ble generator short circuit
valve assembly. between ECM and
<Ref. to tumble generator
FU(TURBO)-41, valve actuator.
Tumble Generator
Valve Assembly.>
No