18 · Electrical

Security Alarm System:

ElectricalSecurity Alarm System: · page 1 of 2

Note: The numbers in the table show the fault finding sequence.

Symptom	No.	Item to be inspected
Security alarm cannot be set and indicator light does not flash	1	Check No. 21 (20A) fuse (In the engine compartment fuse/relay box).
	2	Check No. 41 (20A) fuse (In the engine compartment fuse/relay box).
	3	Check No. 1 (7.5A) fuse (In the passenger compartment fuse/relay box).
	4	Faulty indicator light (LED)
	5	Ignition key switch
	6	Control unit input.
Starting system does not operate.	2	Starting system.
	3	Starter cut relay.
	4	A/T gear position switch (A/T)
	5	Control unit input.
Security alarm can be set but the Horn/Siren alarm does not operate when the boot bonnet or passenger door is opened without the key.	1	Check No. 21 (20A) fuse (In the engine compartment fuse/relay box).
	2	Check No. 41 (20A) fuse (In the engine compartment fuse/relay box).
	3	Horn circuit/siren circuit.
	4	Control unit input.
Security alarm can be set but the Hazard warning lights alarm does not operate when the boot bonnet or passenger door is opened without the key.	1	Indicator signal/hazard system.
	2	Control unit input.
Alarm is not cancelled when the driver's or front passenger door is opened with the key or transmitter.	1	Door key cylinder switch
	2	Receiver unit/transmitter.
	3	Control unit input.
Alarm does not operate when the bonnet is opened without the key.	1	Bonnet switch.
	2	Control unit input.
Alarm does not operate when the boot lid is opened without the key.	1	Boot switch.
	2	Boot key cylinder switch.
	3	Control unit input.
Alarm does not operate when a door is opened without the key.	1	Door switch.
	2	Control unit input.

Parts & tools for this job For Rover 600

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