Immobiliser

Hello. Thanks for the donation. Much appreciated

you cannot BYPASS the immobolizer on this vehicle i'm afraid. The PCM (computer) cuts injector pulse. Not starter operation. You will need a scantool with the necassary software to diagnose the fault ! Hope this helps. Let me know

Vehicles equipped with Vehicle Theft Security System (VTSS) are protected from vehicle theft and unauthorized entry. VTSS system monitors vehicle doors, hood, liftgate and ignition. If an attempt is made to enter or operate vehicle without proper disarming of system, vehicle horn will sound, headlights, taillights and parking lights will flash, and engine will be prevented from running.
VTSS system arms when ignition is off, vehicle is exited, door is locked using power door locks and door is closed. Alternatively a remote keyless entry transmitter can be used to arm system. A security light on panel will flash for 15 seconds to indicate system is arming. At the end of 15 seconds, if no door, hood or tailgate is opened, system is armed.
If alarm is triggered, horn will sound for 3 minutes, and lights will flash for an additional 15 minutes. If horn sounds 3 times when either front door is unlocked, vehicle has been tampered with (tamper alert). If doors are locked manually or with key, system will not arm (manual override). If an unauthorized entry does occur, VTSS system signals Powertrain Control Module (PCM) to prevent vehicle from being driven. PCM reduces injector pulse width to zero, causing a start and stall condition.

***********System can be disarmed with the keyless entry transmitter, or by using key to enter vehicle. In both instances, if alarm was activated, vehicle alarm will be terminated. If battery is disconnected and reconnected, alarm will be activated and it will be necessary to disarm system as indicated.****************

ANTI-THEFT SYSTEM TEST 1A - IDENTIFYING ANTI-THEFT SYSTEM PROBLEMS
NOTE:Perform SYMPTOM ID TEST 1A before proceeding. For connector terminal ID, see CONNECTOR IDENTIFICATION and WIRING DIAGRAM. See ANTI-THEFT SYSTEM article. Perform TEST VER-2A after each repair.

CAUTION:Always turn ignition switch to OFF position prior to disconnecting any module connector. Ensure all connectors are clean and tight.

NOTE:Anti-theft system may also be referred to as VTSS (Vehicle Theft Security System).

Using scan tool, select BODY SYSTEM, then BODY COMPUTER. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool displays NO RESPONSE, go to TEST 3A under VEHICLE COMMUNICATIONS. If scan tool displays any other message, go to TEST 1A under VEHICLE COMMUNICATIONS.
If anti-theft indicator light comes on while driving, go to ANTI-THEFT SYSTEM TEST 2A. If anti-theft indicator light stays on during arming process, go to ANTI-THEFT SYSTEM TEST 8A. If okay, go to next step.
Using scan tool, select MODULE DISPLAY. If module ID is not ZJ BODY BCM W/VTSS, go to ANTI-THEFT SYSTEM TEST 3A. If okay, go to next step.
Using scan tool, select THEFT ALARM. Turn ignition on. With scan tool in THEFT ALARM, select MONITOR DISPLAY. Read VTSS status. If VTSS mode is not disarmed, go to ANTI-THEFT SYSTEM TEST 1B. If scan tool displays powertrain control module 1 - NO RESPONSE/2 -NO RESPONSE, go to TEST 9A under VEHICLE COMMUNICATIONS. If okay, go to next step.
Ensure all doors are closed and properly aligned. Turn ignition off. DO NOT remove key from ignition switch. With scan tool still under THEFT ALARM, select MISCELLANEOUS, CHANGE MODE, then DIAGNOSTICS. After entering DIAGNOSTICS mode, horn should sound twice, park lights and headlights should flash, and anti-theft indicator light should flash. If the horn fails to sound, go to ANTI-THEFT SYSTEM TEST 4A. If anti-theft indicator light fails to flash, go to ANTI-THEFT SYSTEM TEST 5A. If headlights or park lights fail to flash, go to ANTI-THEFT SYSTEM TEST 6A. If okay, go to next step.
Remove key from ignition switch. Park and headlights should stop flashing. Open and close each door, liftgate and hood. Rotate key in front doors and liftgate to unlock position. Horn should sound. If horn does not sound after each action, perform indicated tests specified in ANTI-THEFT SYSTEM DIAGNOSTIC TEST DIRECTORY.
TEST VER-2A - VERIFICATION PROCEDURE
Ensure all doors and liftgate are closed. Open driver's door. Remove ignition key. Lock doors with remote keyless entry transmitter. Close driver's door. If anti-theft indicator light flashes, system is operational. If anti-theft indicator light does not flash, perform ANTI-THEFT SYSTEM TEST 1A.

I would be checking. Starter motor wiring connections. Ignition switch for faults/sticking. You could also check neutral safety switch connections? Let me know if you need any diagrams listed? .

ON-VEHICLE TESTING
CAUTION:When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

CRANKING TEST
NOTE:Ensure engine is at normal operating temperature. High viscosity oil, extreme cold temperatures, or tight engine will increase amperage draw.

Using a battery load tester, connect positive and negative leads to battery. Connect inductive ammeter pick-up to positive battery cable. Ensure all lights and accessories are off. Place A/T in Park or M/T in Neutral. Apply parking brake.
Crank engine and observe voltmeter reading. If voltage drops below 9.6 volts, recharge and test battery. If voltage remains above 9.6 volts, observe amperage reading. Replace starter if amperage draw is more than specified. See STARTER SPECIFICATIONS.
CAUTION:During cranking, DO NOT draw battery voltage down to less than 9.6 volts. Use care not to overheat starter.

If starter cranks engine freely, but problem with starter is still suspected, engage starter several times while observing volt/ammeter readings. A starter that has a problem should fail when performing this procedure.
CIRCUIT RESISTANCE TESTS
NOTE:If excessive resistance is not found in circuits being tested, remove starter and proceed to BENCH TESTING.

NOTE:A voltmeter accurate to one tenth of a volt will be needed for the following tests.

Battery Connection Resistance Tes
Connect voltmeter positive lead to negative battery cable clamp. Connect voltmeter negative lead to negative battery post. Crank engine and observe voltmeter reading. If voltage is greater than 0.2 volt, repair poor contact between cable clamp and post. Perform same procedure to positive battery post and cable clamp.
Ground Connection Resistance Test
Connect voltmeter negative lead to negative battery post. Connect voltmeter positive lead to engine block, near negative battery cable grounding point. Crank engine and observe voltmeter reading. If voltage is greater than 0.2 volt, repair poor ground connection or replace ground cable.
Starter Ground Connection Resistance Test
Connect voltmeter negative lead to negative battery post. Connect voltmeter positive lead to starter housing. Crank engine and observe voltmeter reading. If voltmeter reading indicates more than 0.2 volt, repair poor starter-to-ground connection.
Positive Battery Cable Resistance Test
Remove starter heat shield (if equipped) to gain access to starter solenoid connections. Connect voltmeter negative lead to starter solenoid battery terminal and voltmeter positive lead to positive battery post.
Crank engine and observe voltmeter reading. If voltage reads more than 0.2 volt, correct poor connection between battery cable and starter solenoid or replace positive battery cable.
SOLENOID CIRCUIT TEST
NOTE:Perform SOLENOID CIRCUIT TEST under ON-VEHICLE TESTING before testing starter relay circuit and starter relay. Ensure A/T is in Park or M/T is in Neutral and parking brake is applied.

Ensure battery is fully charged. Ensure solenoid connections are not loose or corroded. Remove starter relay from Power Distribution Center (PDC). Refer to PDC cover for proper relay location. PDC is located in engine compartment.
Connect a remote starter switch or jumper wire between starter relay connector terminal No. 87 and positive battery post. See Fig. 1. If engine cranks, solenoid and starter are good. Go to STARTER RELAY CIRCUIT TEST.
If engine fails to crank, or if solenoid chatters, check wiring and connectors from starter relay connector to starter solenoid terminal for loose or corroded connections. Clean and retest. If engine still fails to crank, remove starter and proceed to SOLENOID TEST under BENCH TESTING.
Fig. 1: Identifying Starter Relay Terminals
Courtesy of CHRYSLER CORP.
STARTER RELAY TEST
NOTE:Perform SOLENOID CIRCUIT TEST under ON-VEHICLE TESTING before testing starter relay.

Remove starter relay from Power Distribution Center (PDC). PDC is located in engine compartment. Refer to PDC label for starter relay identification.
Using an ohmmeter, check for continuity between starter relay terminals No. 30 and 87A. See Fig. 1. If no continuity exists, replace starter relay. Check for continuity between starter relay terminals No. 30 and 87. If continuity exists, replace starter relay. If relay tests as specified, go to next step.
Check resistance between starter relay terminals No. 85 and 86. If resistance is not 70-80 ohms, replace starter relay. If resistance is okay, go to next step.
Connect a 12-volt power source to starter relay terminals No. 85 and 86. Continuity should exist between starter relay terminals No. 30 and 87. No continuity should exist between starter relay terminals No. 30 and 87A. Replace starter relay if it does not test as specified. If starter relay tests as specified, go to STARTER RELAY CIRCUIT TEST.
STARTER RELAY CIRCUIT TEST
NOTE:Perform SOLENOID CIRCUIT TEST under ON-VEHICLE TESTING before testing starter relay circuit.

Ensure battery is fully charged. Remove starter relay from Power Distribution Center (PDC). Refer to PDC cover for proper relay location. PDC is located in engine compartment.
Connect a jumper wire between starter relay connector terminals No. 30 and 87. See Fig. 1. If engine does not crank, go to SOLENOID TEST. If engine cranks, go to next step.
Turn ignition on. Check for battery voltage at starter relay connector terminal No. 30. If voltage is not present, repair open in wiring from starter relay connector to battery.
If voltage is present at starter relay connector terminal No. 30, ensure battery voltage is also present at starter relay connector terminal No. 86. Check for voltage with ignition switch in START position. If voltage is not present, go to next step. If voltage is present, circuit is okay. Go to step 6).
If voltage is not present at starter relay connector terminal No. 86, repair open or short in wiring from ignition switch to starter relay connector. If circuit to ignition switch is okay, check ignition switch. See IGNITION SWITCH TEST under ON-VEHICLE TESTING.
Check for continuity to ground at starter relay connector terminal No. 85. If continuity exists, circuit is okay. If continuity does not exist, go to next step.
If vehicle is equipped with an A/T, check for an open or short to neutral safety switch. See NEUTRAL SAFETY SWITCH under ON-VEHICLE TESTING. If vehicle is equipped with a M/T, repair circuit to ground as required.
IGNITION SWITCH TEST
WARNING:Deactivate air bag system before performing any service operation involving steering column components. See appropriate AIR BAG RESTRAINT SYSTEM article in the ACCESSORIES/SAFETY EQUIPMENT section.

NOTE:For additional information, refer to TEST NS-1A in appropriate TESTS W/CODES article in ENGINE PERFORMANCE section.

Disconnect negative battery cable. Remove ignition switch. See STEERING COLUMN SWITCHES article in ACCESSORIES & EQUIPMENT. With ignition switch in ON position, check for continuity between ignition switch terminals No. 1 and 7. See WIRING DIAGRAMS. If continuity exists, replace ignition switch. If continuity does not exist, go to next step.
With ignition switch in START position, check for continuity between ignition switch terminals No. 1 and 7. See WIRING DIAGRAMS. If continuity exists, ignition switch is okay. If continuity does not exist, replace ignition switch.