Subaru 2002 Impreza - Page 328

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Repair poor con-
tact in mass air
flow sensor con-
nector.
Step
CHECK HARNESS BETWEEN ECM AND
MASS AIR
FLOW SENSOR CONNECTOR
Measure the resistance of harness between
ECM and chassis ground.
Connector & terminal
(884)
No. 13 - Chassis ground:
(8135)
No. 27 - Chassis ground:
(8 135)
No. 19 - Chassis ground:
CHECK POOR CONTACT
Check poor contact in mass air flow sensor
Replace the mass
air flow and intake
air temperature
sensor. <Ref.
to
FU(D0HC
TURBO)-34, Mass
Air
Flow and
Intake Air Temper-
ature Sensor.>
connector.
Check
Is the resistance more than
1 Ma?
Is there poor contact in mass
air flow sensor connector?
short circuit
between ECM and
mass air flow sen-
sor connector.
EN(D0HC TURBO)-104