PR25DD engine

WARNING: This page is about a different variant/trim than selected.

CHECK DTC PRIORITY
If DTC P0090 is displayed with DTC P1197, first perform the trouble diagnosis for DTC P1197.

Is DTC P1197 detected?

YES

Perform diagnosis for P1197. DTC Description

NO

GO TO 2.

CHECK HIGH PRESSURE FUEL PUMP CIRCUIT

Turn ignition switch ON.
Disconnect ECM harness connector and high pressure fuel pump harness connector.

Check the continuity between ECM harness connector and high pressure fuel pump harness connector.

ECM		High pressure fuel pump		Continuity
Connector	Terminal	Connector	Terminal
F90	67	F108	1	Existed
	68		2

Also check harness for short to power and short to ground.

Is inspection result normal?

YES

GO TO 3.

NO

Repair or replace the error-detected parts.

CHECK HIGH PRESSURE FUEL PUMP
Check high pressure fuel pump. Refer to Component Inspection .

Is inspection result normal?

YES

INSPECTION END

NO

Replace error-detected parts.