Drive Cycle - Subaru 2009 IMPREZA Service Manual

Drive Cycle

ENGINE (DIAGNOSTICS)
12.Drive Cycle
A: PROCEDURE
For the troubleshooting, there are driving patterns described below. Driving in the specified pattern allows to
diagnose malfunctioning items listed below. After the repair of the following trouble items, be sure to drive the
vehicle with the specified drive patterns to check whether the function is resumed correctly.
1. PREPARATION FOR DRIVE CYCLE
1) Check that the battery voltage is 12 V or more and fuel remains approx. half [20 — 40 2 (5.3 — 10.6 US gal,
4.4 — 8.8 Imp gal)].
2) After performing the diagnostics and clearing the memory, check that no DTC remains. <Ref. to
EN(H4SO)(diag)-55, Clear Memory Mode.>
3) Disconnect the delivery (test) mode connector.
NOTE:
• Perform the diagnosis after warming up the engine except when the engine coolant temperature at starting
is specified.
• Perform the diagnosis twice if the DTC marked with *. After completing the first diagnosis, stop the engine
and perform second diagnosis in same condition.
EN(H4SO)(diag)-49