Subaru Impreza 2003 Service Manual page 1379

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
Step
3 CHECK POOR CONTACT.
Check poor contact in TCM connector.
4 CHECK HARENESS BETWEEN VEHICLE
SPEED SENSOR AND ECM CONNECTOR.
1)Turn the ignition switch to OFF.
2)Disconnect the connectors from vehicle
speed sensor and ECM.
3)Measure the resistance of harness between
vehicle speed sensor connector and chassis
ground.
Connector & terminal
(B17) No. 1 — Chassis ground:
5 CHECK POOR CONTACT.
Check poor contact in the vehicle speed sen-
sor connector.
Check
Is there poor contact in TCM
connector?
Is the resistance more than 1
MΩ?
Is there poor contact in the
vehicle speed sensor connec-
tor?
EN(H4DOTC)-203
ENGINE (DIAGNOSTICS)
Yes
Repair poor con- Contact your Sub-
tact in TCM con- aru distributor ser-
nector. vice.
Go to step 5. Repair the ground
short circuit in har-
ness between
vehicle speed sen-
sor and ECM con-
nector.
Repair poor con- Replace the vehi-
tact in the vehicle cle speed sensor.
speed sensor con- <Ref. to 5MT-51,
nector. Vehicle Speed
Sensor.>
No