Subaru IMPREZA 2002 Service Manual page 133

I
DIAGNOSTIC PROCEDURE FOR SELECT MONITOR COMMUNICATION
AUTOMATIC TRANSMISSION (DIAGNOSTICS)
Step
CHECK SUBARU SELECT MONITOR POW-
ER SUPPLY CIRCUIT.
Measure the voltage between data link con-
nector and chassis ground.
Connector & terminal
(840) No.
1
-
Chassis ground:
CHECK SUBARU SELECT MONITOR
GROUND CIRCUIT.
Measure the resistance of harness between
data link connector and chassis ground.
(840)
No.
12
-
Chassis ground:
(840)
No.
13
-
Chassis ground:
Connector & terminal
CHECK COMMUNICATION OF SELECT
MONITOR.
1)Turn the ignition switch to ON.
2)Using the select monitor, check whether
communication to other systems (such as
engine, ABS etc.) can be executed normally.
CHECK COMMUNlCATtON OF SELECT
MONITOR.
1)Turn the ignition switch to OFF.
2)Disconnect the TCM connector.
3)Check whether communication to other sys-
tems (such as ABS etc.) can be executed nor-
mally.
CHECK COMMUNICATION OF SELECT
MO N IT0 R
.
1)Turn the ignition switch to OFF.
2)Connect the TCM connector.
3)Disconnect the ECM connector.
4)Check whether communication to other sys-
tems (such as ABS etc.) can be executed nor-
mally.
CHECK COMMUNICATION OF SELECT
MONITOR.
1)Turn the ignition switch to OFF.
2)Connect the ECM connector.
3)Disconnect the ABSCM&H/U connector.
4)Check whether communication to other sys-
tems (such as engine etc.) can be executed
normally.
CHECK COMMUNICATION OF SELECT
MONITOR.
1)Turn the ignition switch to OFF.
2)Connect the ABSCM&H/U module connec-
tor.
3)Disconnect the cruise control module con-
nector.
4)Check whether communication to other sys-
tems (such as engine etc.) can be executed
normally.
NOTE:
If the vehicle is not equipped with cruise contro
Go to step 8.
~~
Check
s the voltage more than lOV?
Is the resistance less than In?
Are the name and year of the
system displayed on the select
monitor?
Are the name and year of the
system displayed on the select
monitor?
Are the name and year of the
system displayed on the select
monitor?
Are the name and year of the
system displayed on the select
monitor?
Are the name and year of the
system displayed on the select
monitor?
Yes
30
to step 2.
30
to step
3.
30 to step 8.
So to step 10.
Inspect the ECM.
Inspect the
ABSCM&H/U.
Inspect the cruise
control module.
No
3epair harness
and connector
3etween battery
and data link con-
lector, and poor
:ontact in cou-
Dling connector.
Repair open circuii
in harness
between data link
sonnector and
ground terminal,
and poor contact
in coupling con-
nector.
Go to step 4.
Go to step 5.
Go to step 6 .
Go to step 7.
Go to step 8.
AT-41