Subaru Forester 2004 Service Manual page 153

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTIC)
Step
1 CHECK HARNESS BETWEEN VEHICLE
SPEED SENSOR AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from vehicle
speed sensor ECM.
3) Measure the resistance of harness
between vehicle speed sensor connector and
chassis ground.
Connector & terminal
(B17) No. 1 — Chassis ground:
2 CHECK POOR CONTACT.
Check poor contact in vehicle speed sensor
connector.
Check
Is the resistance more than 1
MΩ?
Is there poor contact in vehicle
speed sensor connector?
EN(H4DOTC 2.5)-152
Yes
Go to step 2. Repair ground short
circuit in harness
between vehicle
speed sensor and
ECM connector.
Repair poor con- Replace the vehi-
tact in vehicle cle speed sensor.
speed sensor con- <Ref. to 5MT-46,
nector. Vehicle Speed
Sensor.>
No