Start Inhibitor Will Not Disengage

Car Will Not Start

Sources of fault
Open-circuit in signal lead between ignition and starter motor.
Short-circuit to ground in signal lead between ignition and starter motor.
Fault in starter motor.
Fault in ignition.
Fault in alarm control module.

Fault-tracing starts with K1.

K1 Check That Starter Motor Is Working

Deactivate alarm.





Ignition off.
Remove alarm control module (position 210/211).





Bridge alarm relay plinth between position 50E and position 50F.






Start engine by turning ignition to position III.
Starter motor should work.





If starter motor works:
Try another alarm control module in Guard Alarm I or II for Fault- Tracing in Alarm Wiring Harness.

Guard Alarm II:
Run control module self-test in Guard Alarm II (only) before replacing control module.

If starter motor does not work:
Check ignition supply K2.


K2 Check Ignition Supply

Ignition off.
Remove bridge from alarm relay plinth between position 50E and position 50F





Connect a voltmeter to alarm relay plinth between position 50E and position 31 (ground).




Turn ignition key to position III.
Voltmeter should read battery voltage.






If reading is OK:
Fault-trace in starter motor electrical system.

If reading is incorrect:
Check lead between ignition (3/1) position 50 and alarm relay plinth position 50E for open-circuit as per WA3 and for short-circuit to ground as per WA4See Other Fault-Tracing Test.