Subaru LEGACY 2003 Service Manual page 133

DIAGNOSTICS CHART WITH SELECT MONITOR
Step
1 CHECK IGNITION SWITCH.
2 CHECK BATTERY.
1) Turn ignition switch to OFF.
2) Measure battery voltage.
Does the measured value exceed the spec-
ified value?
3 CHECK BATTERY TERMINAL.
Is there poor contact at battery terminal?
4 CHECK COMMUNICATION OF SELECT
MONITOR.
1) Turn ignition switch to ON.
2) Using the select monitor, check whether
communication to other systems can be
executed normally.
Are the name and year of the system dis-
played on the select monitor?
5 CHECK COMMUNICATION OF SELECT
MONITOR.
1) Turn ignition switch to OFF.
2) Disconnect VDCCM connector.
3) Check whether communication to other
systems can be executed normally.
Are the name and year of the system dis-
played on the select monitor?
6 CHECK COMMUNICATION OF SELECT
MONITOR.
1) Turn ignition switch to OFF.
2) Connect VDCCM module connector.
3) Disconnect cruise control module connec-
tor.
4) Check whether communication to other
systems can be executed normally.
Are the name and year of the system dis-
played on the select monitor?
NOTE:
If the vehicle is not equipped with cruise control:
Go to step 7.
7 CHECK HARNESS CONNECTOR BETWEEN
EACH CONTROL MODULE AND DATA LINK
CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect VDCCM, and cruise control
module connectors.
3) Measure resistance between data link con-
nector and chassis ground.
Connector & terminal
(B40) No. 5 — Chassis ground:
(B40) No. 4 — Chassis ground:
Does the measured value exceed the spec-
ified value?
Value
Is ignition switch to ON?
11 V
There is poor contact.
Displayed.
Displayed.
Displayed.
1 MΩ
VDC-131
VDC (DIAGNOSTICS)
Yes
Go to step 2. Turn ignition
switch to ON, and
select VDCCM
mode using the
select monitor.
Go to step 3. Charge or replace
battery.
Repair or tighten Go to step 4.
battery terminal.
Go to step 9. Go to step 5.
Go to step 10. Go to step 6.
Inspect cruise con- Go to step 7.
trol module.
Go to step 8. Repair harness
and connector
between each
control module
and data link con-
nector.
No