Subaru 2009 IMPREZA Service Manual page 471

ENGINE (DIAGNOSTICS)
8. DRIVE CYCLE H
1) Perform the Clear Memory Mode. <Ref. to EN(H4SO)(diag)-55, Clear Memory Mode.>
2) With the ignition switch ON, read the engine coolant temperature, intake air temperature and fuel temper-
ature. <Ref. to EN(H4SO)(diag)-35, READ CURRENT DATA FOR ENGINE (NORMAL MODE), OPERA-
TION, Subaru Select Monitor.>
3) If the values from step 2) satisfy the following two conditions, start the engine.
Condition:
|Engine coolant temperature — Intake air temperature |
|Engine coolant temperature — Fuel temperature |
NOTE:
• If the conditions are not satisfied, turn the ignition switch to OFF and wait until the parameters are satisfied.
• Start AT vehicles in the "P" range, and MT vehicles in the neutral position.
4) Idle the engine for 1 minute under the conditions in step 3).
DTC
*
P1602 Control Module Programming Error
Drive Cycle
2°C (36°F)
Item
EN(H4SO)(diag)-54
5°C (41°F)
Condition
—