5AT(diag)-119
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
Check
Yes
No
1
CONFIRM WQUIPMENT OF VEHICLE.
Is VDC equipped with the vehi-
cle? And is there VDC OFF
switch in the instrument panel?
Go to step 2.
Go to step 4.
2
CHECK DTC OF TCM.
Is DTC of AT CAN communica-
tion detected?
Perform the diag-
nosis according to
DTC.
Go to step 3.
3
CHECK DTC OF ABS.
Is DTC of ABS detected?
Perform the diag-
nosis according to
DTC of ABS
Temporary poor
contact occurs.
Recheck the har-
ness and connec-
tor for faulty.
4
CHECK OUTPUT OF LATERAL G SENSOR
USING SUBARU SELECT MONITOR.
1) Select {Current Data Display & Save} in
Subaru Select Monitor.
2) Read the lateral G sensor output on Subaru
Select Monitor display.
Is the value on display 2.3 —
2.7 V when the lateral G sen-
sor is in horizontal position?
Go to step 5.
Go to step 8.
5
CHECK POOR CONTACT IN CONNECTOR.
Turn the ignition switch to OFF.
Is there poor contact in con-
nector between TCM and lat-
eral G sensor?
Repair the con-
nector.
Go to step 6.
6
CHECK ABSCM&H/U.
1) Connect all the connectors.
2) Perform the clear memory mode.
3) Perform the inspection mode.
4) Read the DTC.
Is the same DTC displayed?
Replace the TCM.
<Ref. to 5AT-61,
Transmission Con-
trol Module
(TCM).>
Go to step 7.
7
CHECK OTHER DTC DETECTION.
Is any other DTC displayed?
Perform the diag-
nosis according to
DTC.
Temporary poor
contact occurs.
8
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. 13 — (B55) No. 6:
Is the resistance 5.0 — 6.0
k
Ω?
Go to step 9.
Repair the har-
ness connector
between lateral G
sensor and TCM.
9
CHECK GROUND SHORT OF HARNESS.
Measure the resistance between TCM connec-
tor and chassis ground.
Connector & terminal
(B54) No. 13 — Chassis ground:
Is the resistance more than 1
M
Ω?
Go to step 10.
Repair the har-
ness between lat-
eral G sensor and
TCM.
Replace the TCM.
<Ref. to 5AT-61,
Transmission Con-
trol Module
(TCM).>
10
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 the TCM.
5) Turn the ignition switch to ON.
6) Measure the voltage between lateral G
sensor connector terminals.
Connector & terminal
(B359) No. 3 (+) — No. 2 (
−
):
Is the voltage 2.3 — 2.7 V
when lateral G sensor is hori-
zontal?
Go to step 11.
Replace the lat-
eral G sensor.
<Ref. to 5AT-62,
Lateral G Sensor.>