SL-29
Security System
SECURITY AND LOCKS
5. CHECK IGNITION SWITCH CIRCUIT
Step
Check
Yes
No
1
CHECK IGNITION SWITCH VOLTAGE.
1) Prepare the Subaru Select Monitor kit.
2) Turn the ignition switch to ON (engine OFF)
and run the “PC application for Subaru Select
Monitor”.
3) On «System Selection Menu» display,
select {Integ. unit mode}.
4) Select the {Current Data Display & Save}.
5) Select the {BATT voltage} and {IG power
supply voltage}.
Is the {IG power supply voltage}
within ±1 V against {BATT volt-
age}?
The ignition switch
input circuit is OK.
Go to step
2.
2
CHECK IGNITION SWITCH CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector of body
integrated unit.
3) Turn the ignition switch to ON.
4) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B280) No. 1 (+) — Chassis ground (–):
Is the voltage 10 V or more?
Check body inte-
grated unit. <Ref.
to LAN(diag)-2,
Basic Diagnostic
Procedure.>
Check the harness
for open or short
circuit between
body integrated
unit and fuse.