Theft Alarm Module (Cherokee)

Turn ignition key to ACCY position 3 times and leave in ACCY position to activate Security Alarm Module (SAM) self-diagnostics. If parking lights and tail lights do not flash, go to step 2). If headlights do not flash, go to step 6). If horn does not sound twice, go to step 7). If horn sounds and headlights, parking lights and tail lights flash, go to step 8).
NOTE: For identifying circuits referred to in testing, see appropriate wiring diagram in WIRING DIAGRAMS article in this section.
Check accessory and parking light fuses. Replace fuses, if necessary. If fuses are okay, disconnect SAM connector. Security alarm module is located on driver's side of A/C-heater housing.
NOTE: If SECURITY light comes and remains on with ignition on, the Chrysler Collision Detection (CCD) bus communication with the engine controller has been lost. After servicing vehicle ensure that system operates properly. A malfunctioning anti-theft system may keep engine from starting.
Check wiring side of SAM connector for battery voltage at battery, accessory, and headlight feed wires. Also check ground circuits for both ground wires.
If battery voltages and ground circuits are NOT okay, repair wiring harness and retest system. If battery voltages and ground circuits are okay, check for battery voltage at ignition feed wire of SAM connector.
If battery voltage is present, replace security alarm module and retest system. If battery voltage is not present, repair wiring harness and retest system.
Check headlight wiring harness and headlight relay. If wiring harness and relay are okay, replace security alarm module. If wiring harness and relay are NOT okay, repair wiring harness or replace relay and retest system.
Check horn, horn fuse and wiring harness. If horn, horn fuse and wiring harness are okay, replace security alarm module and retest system. If horn, horn fuse and wiring harness are not okay, repair wiring harness or replace fuse or horn and retest system.
Verify that SECURITY light is flashing. If SECURITY light is not flashing, check bulb and wiring harness. Repair or replace as necessary. If bulb and wiring are okay, replace security alarm module and retest system.
If SECURITY light is flashing, turn ignition key to OFF position. Remove illuminated entry relay from vehicle. Relay is located on a bracket behind instrument panel.
Check theft alarm switches by opening and closing doors and liftgate. Replace switch(es) or repair wiring harness as necessary. If switches are okay, check hood switch by opening and closing hood.
Replace hood switch or repair wiring harness as necessary. If hood switch is okay, unlock (with key) each front door and liftgate one at a time to test disarm switches. Replace switch(es) or repair wiring harness as necessary and retest system.
If disarm switches are okay, cycle power door locks to lock position and then unlock. Replace door lock switch(es), lock/unlock relay(s) or repair wiring harness as necessary and retest system.
If power door locks operate properly, lock and unlock vehicle with keyless entry transmitter. If power door locks do not operate properly, replace keyless entry transmitter, receiver or repair wiring harness as necessary and retest system.
If keyless entry system operates properly, turn ignition key to ON position and wait 30 seconds. If SECURITY light comes on and stays on, repair or replace CCD bus and wiring as necessary and retest system. If SECURITY light remains off, theft alarm system is operating properly.

NOTE: A functional SBEC-II that has been used in a vehicle equipped with theft alarm system CANNOT be used in another vehicle that is NOT equipped with theft alarm system.