Subaru Legacy 2005 Service Manual page 2541

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
15 CHECK INPUT VOLTAGE OF LATERAL G
SENSOR.
1) Turn the ignition switch to OFF.
2) Remove the console box.
3) Remove the lateral G sensor from vehicle.
(Do not disconnect connector.)
4) Turn the ignition switch to ON.
5) Measure the voltage between lateral G
sensor connector terminals.
Connector & terminal
(B359) No. 1 (+) — No. 2 (
16 CHECK OPEN CIRCUIT IN LATERAL G SEN-
SOR OUTPUT HARNESS AND GROUND
HARNESS.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from TCM.
3) Measure the resistance between TCM con-
nector terminals.
Connector & terminal
(B55) No. 5 — No. 6:
17 CHECK LATERAL G SENSOR.
1) Connect the connector to lateral G sensor.
2) Connect the connector to the TCM.
3) Turn the ignition switch to ON.
4) Measure the voltage between lateral G
sensor connector terminals.
Connector & terminal
(B359) No. 3 (+) — No. 2 (
18 CHECK LATERAL G SENSOR.
Measure the voltage between lateral G sensor
connector terminals.
Connector & terminal
(B359) No. 3 (+) — No. 2 (
19 CHECK LATERAL G SENSOR.
Measure the voltage between lateral G sensor
connector terminals.
Connector & terminal
(B359) No. 3 (+) — No. 2 (
20 CHECK POOR CONTACT IN CONNECTOR.
Turn the ignition switch to OFF.
21 CHECK ABSCM&H/U.
1) Connect all the connectors.
2) Perform the clear memory mode.
3) Perform the inspection mode.
4) Read the DTC.
22 CHECK OTHER DTC DETECTION.
AQ:DTC P1798 GEAR 1 ENGINE BRAKE
NOTE:
Refer to DTC P0773 for diagnostic procedure. <Ref. to 5AT(diag)-85, DTC P0773 SHIFT SOLENOID "E"
ELECTRICAL, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
Is the voltage 4.75 — 5.25 V? Go to step 16.
−
):
Is the resistance 5.0 — 5.6
kΩ?
Is the voltage between 2.3 and
2.7 V when lateral G sensor is
horizontal?
−
):
Is the voltage between 3.3 —
4.3 V when lateral G sensor is
inclined to the right to 90°?
−
):
Is the voltage 0.7 — 1.7 V
when lateral G sensor is
inclined to the left to 90°?
−
):
Is there poor contact in con-
nector between TCM and lat-
eral G sensor?
Is the same DTC displayed?
Is any other DTC displayed?
5AT(diag)-123
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Check
Go to step 17.
Go to step 18.
Go to step 19.
Go to step 20.
Repair the con-
nector.
Replace the TCM.
<Ref. to 5AT-61,
Transmission Con-
trol Module
(TCM).>
Perform the diag-
nosis according to
DTC.
Yes No
Repair the har-
ness connector
between lateral G
sensor and TCM.
Repair the har-
ness connector
between lateral G
sensor and TCM.
Replace the lat-
eral G sensor.
<Ref. to 5AT-62,
Lateral G Sensor.>
Replace the lat-
eral G sensor.
<Ref. to 5AT-62,
Lateral G Sensor.>
Replace the lat-
eral G sensor.
<Ref. to 5AT-62,
Lateral G Sensor.>
Go to step 21.
Go to step 22.
Temporary poor
contact occurs.