Subaru Legacy 2005 Service Manual page 2280

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
1 CHECK OUTPUT OF LATERAL G SENSOR
USING SUBARU SELECT MONITOR.
1) Select {Current Data Display & Save} in
Subaru Select Monitor.
2) Read the Subaru Select Monitor display.
2 CHECK OUTPUT OF LATERAL G SENSOR
USING SUBARU SELECT MONITOR.
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) Select {Current Data Display & Save} in
Subaru Select Monitor.
6) Read the Subaru Select Monitor display.
3 CHECK OUTPUT OF LATERAL G SENSOR
USING SUBARU SELECT MONITOR.
Read the Subaru Select Monitor display.
4 CHECK POOR CONTACT IN CONNECTOR.
Turn the ignition switch to OFF.
5 CHECK ABSCM&H/U.
1) Connect all the connectors.
2) Perform the clear memory mode.
3) Perform the inspection mode.
4) Read the DTC.
6 CHECK ANY OTHER DTC ON DISPLAY.
7 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
(B54) No. 2 — No. 9:
8 CHECK LATERAL G SENSOR.
1) Remove the console box.
2) Remove the lateral G sensor from vehicle.
3) Connect the connector to lateral G sensor.
4) Connect the connector to ABSCM&H/U.
5) Turn the ignition switch to ON.
6) Measure the voltage between lateral G
sensor connector terminals.
Connector & terminal
(B359) No. 3 (+) — No. 2 (
9 CHECK LATERAL G SENSOR.
Measure the voltage between lateral G sensor
connector terminals.
Connector & terminal
(B359) No. 3 (+) — No. 2 (
10 CHECK LATERAL G SENSOR.
Measure the voltage between lateral G sensor
connector terminals.
Connector & terminal
(B359) No. 3 (+) — No. 2 (
Is the value on display 2.3 —
2.7 V when the vehicle is on a
level?
Is the value on display 3.3 —
4.3 V when lateral G sensor is
inclined to the right to 90°?
Is the value on display 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 still dis-
played?
Is any other DTC displayed?
Is the resistance 5.0 — 6.0
kΩ?
Is the voltage 2.3 — 2.7 V
when lateral G sensor is hori-
zontal?
−
):
Is the voltage 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°?
−
):
4AT(diag)-108
Check
Go to step 2.
Go to step 3.
Go to step 4.
Repair the con-
nector.
Replace the TCM.
<Ref. to 4AT-66,
Transmission Con-
trol Module
(TCM).>
Perform the diag-
nosis according to
DTC.
Go to step 8.
Go to step 9.
Go to step 10.
Go to step 11.
Yes No
Go to step 7.
Replace the lat-
eral G sensor.
<Ref. to 4AT-67,
Lateral G Sensor.>
Replace the lat-
eral G sensor.
<Ref. to 4AT-67,
Lateral G Sensor.>
Go to step 5.
Go to step 6.
Temporary poor
contact occurs.
Repair the har-
ness connector
between lateral G
sensor and TCM.
Replace the lat-
eral G sensor.
<Ref. to 4AT-67,
Lateral G Sensor.>
Replace the lat-
eral G sensor.
<Ref. to 4AT-67,
Lateral G Sensor.>
Replace the lat-
eral G sensor.
<Ref. to 4AT-67,
Lateral G Sensor.>