Subaru Impreza 2004 Service Manual page 164

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
7 CHECK HARNESS BETWEEN ECM AND
NEUTRAL POSITION SWITCH CONNEC-
TOR.
1)Disconnect the connector from ECM.
2)Measure the resistance of harness between
ECM and transmission harness connector.
Connector & terminal
Model without driver's control center dif-
ferential
(B134) No. 8 — (B128) No. 1:
Model with driver's control center differ-
ential
(B134) No. 8 — (B128) No. 2:
8 CHECK HARNESS BETWEEN ECM AND
NEUTRAL POSITION SWITCH CONNEC-
TOR.
Measure the resistance of harness between
transmission harness connector and engine
ground.
Connector & terminal
Model without driver's control center dif-
ferential
(B128) No. 1 — Chassis ground:
Model with driver's control center differ-
ential
(B128) No. 2 — Chassis ground:
9 CHECK POOR CONTACT.
Check poor contact in transmission harness
connector.
Check
Is the resistance less than 1
Ω?
Is the resistance less than 5
Ω?
Is there poor contact in trans-
mission harness connector?
EN(H4DOTC)(diag)-243
ENGINE (DIAGNOSTICS)
Yes
Go to step 8. Repair open circuit
in harness
between ECM and
transmission har-
ness connector.
Go to step 9. Repair open circuit
between transmis-
sion harness con-
nector and engine
ground terminal.
Repair poor con- Contact your Sub-
tact in transmis- aru distributor ser-
sion harness vice.
connector.
No