Subaru Legacy 2005 Service Manual page 2540

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
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.
5 CHECK POOR CONTACT IN CONNECTOR. Is there poor contact in con-
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.
7 CHECK OTHER DTC DETECTION.
8 CHECK CONDITIONAL INFORMATION
WHEN FAULTY.
Read the lateral G sensor output on Subaru
Select Monitor display.
9 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. 1:
10 CHECK BATTERY SHORT OF HARNESS.
1) Turn the ignition switch to OFF.
2) Remove the console box.
3) Disconnect the connector from lateral G
sensor.
4) Disconnect the connector from TCM.
5) Measure the voltage between TCM con-
nector and chassis ground.
Connector & terminal
(B55) No. 6 (+) — Chassis ground (
11 CHECK BATTERY SHORT OF HARNESS.
1) Turn the ignition switch to ON.
2) Measure the voltage between TCM con-
nector and chassis ground.
Connector & terminal
(B55) No. 6 (+) — Chassis ground (
12 CHECK POOR CONTACT IN CONNECTOR. Is there poor contact in con-
13 CHECK TCM.
1) Connect all the connectors.
2) Perform the clear memory mode.
3) Perform the inspection mode.
4) Read the DTC.
14 CHECK OTHER DTC DETECTION.
Check
Is the value on display 2.3 —
2.7 V when the lateral G sen-
sor is in horizontal position?
nector between TCM and lat-
eral G sensor?
Is the same DTC displayed?
Is any other DTC displayed?
Is the reading on monitor dis-
play 4.65 V or more?
Is the resistance 4.3 — 4.9
kΩ?
Is the voltage less than 1 V?
−
):
Is the voltage less than 1 V?
−
):
nector between TCM and lat-
eral G sensor?
Is the same DTC displayed?
Is any other DTC displayed?
5AT(diag)-122
Yes
Go to step 5. Go to step 8.
Repair the con- Go to step 6.
nector.
Replace the TCM. Go to step 7.
<Ref. to 5AT-61,
Transmission Con-
trol Module
(TCM).>
Perform the diag- Temporary poor
nosis according to contact occurs.
DTC.
Go to step 9. Go to step 15.
Go to step 10. Repair the har-
ness connector
between lateral G
sensor and
ABSCM&H/U.
Go to step 11. Repair the har-
ness between lat-
eral G sensor and
TCM.
Go to step 12. Repair the har-
ness between lat-
eral G sensor and
TCM.
Repair the con- Go to step 13.
nector.
Replace the TCM. Go to step 14.
<Ref. to 5AT-61,
Transmission Con-
trol Module
(TCM).>
Perform the diag- Temporary poor
nosis according to contact occurs.
DTC.
No