Subaru 2009 IMPREZA Service Manual page 2054

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
4 CHECK HARNESS BETWEEN SHIFT LOCK
SOLENOID AND CHASSIS GROUND TERMI-
NAL.
Measure the resistance of harness between
shift lock solenoid and chassis ground.
Connector & terminal
(B117) No. 4 — Chassis ground:
5 CHECK SHIFT LOCK SOLENOID.
Measure the resistance of shift lock solenoid
terminals.
Connector & terminal
(B117) No. 3 — No. 4:
6 CHECK OUTPUT SIGNAL OF BODY INTE-
GRATED UNIT.
1) Connect all connectors.
2) Turn the ignition switch to ON.
3) Set the select lever to the "D" range.
4) Measure the voltage between body inte-
grated unit and chassis ground.
Connector & terminal
(B279) No. 12 (+) — Chassis ground (–):
7 CHECK OUTPUT SIGNAL OF BODY INTE-
GRATED UNIT.
1) Lift up the vehicle.
2) Start the engine.
3) Shift the select lever to "D" range and slowly
increase vehicle speed to over 20 km/h (12
MPH).
NOTE:
The speed difference between front and rear
wheels lights the ABS warning light or the VDC
warning light, but this does not indicate a mal-
function. If the warning light is illuminated, clear
the memory of ABS or VDC after completing AT
control diagnosis. <Ref. to ABS(diag)-21, Clear
Memory Mode.> <Ref. to VDC(diag)-24, Clear
Memory Mode.>
4) Measure the voltage between body inte-
grated unit and chassis ground.
Connector & terminal
(B279) No. 12 (+) — Chassis ground (–):
8 CHECK POOR CONTACT.
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Is the resistance less than 1 ? Go to step 5.
Is the resistance 7.0 — 21.0 ? Go to step 6.
Is the voltage 10.5 V or more? Go to step 7.
Is the voltage less than 1 V?
Is there poor contact of the
reverse inhibitor control circuit?
4AT(diag)-69
Yes No
Repair the open
circuit of harness
between chassis
ground and shift
lock solenoid con-
nector.
Replace the shift
lock solenoid.
Go to step 8.
Check the har- Go to step 8.
nesses or connec-
tors in reverse
inhibitor control cir-
cuit, and repair the
defective part.
Repair the poor Replace the body
contact. integrated unit.
<Ref. to SL-50,
Body Integrated
Unit.>