Subaru 2003 LEGACY Service Manual page 155

DIAGNOSTIC PROCEDURE FOR NO-DIAGNOSTIC TROUBLE CODE (DTC)
Step
28 CHECK ground circuit of steering shift
switch.
1) Turn ignition switch OFF.
2) Disconnect connector from steering roll
connector.
3) Measure resistance of harness between
steering roll connector and chassis ground.
Connector & terminal
(B68) No. 5 — Chassis ground:
Is the measured value less than the speci-
fied value?
29 CHECK steering shift switch.
Measure resistance between steering roll con-
nector terminals.
Connector & terminal
(B68) No. 5 — No. 2:
Does the measured value exceed the the
specified value?
30 CHECK steering shift switch.
1) Press steering shift switch + side and hold
it.
2) Measure resistance between terminals
between steering shift switch.
Connector & terminal
(B68) No. 5 — No. 2:
Is the measured value less than the speci-
fied value?
31 CHECK harness connector between TCM
and Steering roll connector.
1) Disconnect connector from TCM.
2) Measure harness resistance between TCM
connector and steering roll connector.
Connector & terminal
(B55) No. 13 — (B68) No. 2:
Is the measured value less than the speci-
fied value?
32 CHECK Steering shift switch.
1) Turn ignition switch to OFF.
2) Disconnect connector from steering roll
connector.
3) Measure resistance value between steering
roll connectors.
Connector & terminal
(B68) No. 5 — No. 3:
Does the measured value exceed the spec-
ified value?
33 CHECK Steering shift switch.
1) Press steering shift switch + side and hold
it.
2) Measure resistance between terminals of
steering shift switch.
Connector & terminal
(B68) No. 5 — No. 3:
Is the measured value less than the speci-
fied value?
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Value
1 Ω
1 MΩ
1 Ω
1 Ω
1 ΜΩ
1 Ω
AT-153
Yes
Go to step 29. Repair open circuit
between steering
roll connector and
body ground.
Go to step 30. Replace steering
roll connector or
steering shift
switch. Repair
connector poor
contact.
Go to step 31. Replace steering
roll connector or
steering shift
switch. Repair
connector poor
contact.
The circuit is Repair poor con-
returned to a nor- tact or harness
mal condition. disconnection
Temporary poor between connec-
contact of the har- tors of TCM con-
ness may be the nector and
case. Repair poor steering roll con-
contact of steering nector
roll connector and
steering shift
switch harness or
connector.
Go to step 33. Replace steering
roll connector or
steering shift
switch. Repair
connector poor
contact.
Go to step 34. Replace steering
roll connector or
steering shift
switch. Repair
connector poor
contact.
No