Subaru Impreza 2002 Service Manual page 2872

DIAGNOSTICS CHART WITH SUBARU SELECT MONITOR
Step
1 CHECK IGNITION SWITCH.
2 CHECK BATTERY.
1)Turn the ignition switch to OFF.
2)Measure the battery voltage.
3 CHECK BATTERY TERMINAL.
4 CHECK COMMUNICATION OF SELECT
MONITOR.
1)Turn the ignition switch to ON.
2)Using the select monitor, check whether
communication to other system can be exe-
cuted normally.
5 CHECK COMMUNICATION OF SELECT
MONITOR.
1)Turn the ignition switch to OFF.
2)Disconnect the ABSCM&H/U connector.
3)Check whether communication to other sys-
tems can be executed normally.
6 CHECK COMMUNICATION OF SELECT
MONITOR.
1)Turn the ignition switch to OFF.
2)Connect the ABSCM&H/U connector.
3)Disconnect the cruise control module con-
nector.
4)Check whether communication to other sys-
tems can be executed normally.
NOTE:
If the vehicle is not equipped with cruise control:
Go to step 8.
7 CHECK COMMUNICATION OF SELECT
MONITOR.
1)Turn the ignition switch to OFF.
2)Connect the cruise control module connec-
tor.
3)Disconnect the immobilizer control module
connector.
4)Check whether communication to other sys-
tems can be executed normally.
NOTE:
If the vehicle is not quipped with immobilizer
control: Go to step 8.
8 CHECK HARNESS CONNECTOR BETWEEN
EACH CONTROL MODULE AND DATA LINK
CONNECTOR.
1)Turn the ignition switch to OFF.
2)Disconnect the ABSCM&H/U, cruise control
module and immobilizer control module con-
nectors.
3)Measure the resistance between data link
connector and chassis ground.
Connector & terminal
(B40) No. 5 — Chassis ground:
(B40) No. 4 — Chassis ground:
Check
Is the ignition switch turned to
ON?
Is the voltage more than 11 V? Go to step 3.
Is there poor contact at battery
terminal?
Are the name and year of sys-
tem displayed on select moni-
tor?
Are the name and year of sys-
tem displayed on select moni-
tor?
Are the name and year of sys-
tem displayed on select moni-
tor?
Are the name and year of sys-
tem displayed on select moni-
tor?
Is the resistance more than 1
MΩ?
ABS-93
ABS (DIAGNOSTICS)
Yes
Go to step 2. Turn the ignition
switch to ON, and
select ABS mode
using select moni-
tor.
Charge or replace
the battery.
Repair or tighten Go to step 4.
the battery termi-
nal.
Go to step 9. Go to step 5.
Go to step 9. Go to step 6.
Inspect the cruise Go to step 7.
control module.
Inspect the immo- Go to step 8.
bilizer control
module.
Go to step 9. Repair the har-
ness and connec-
tor between each
control module
and data link con-
nector.
No