Question about 1996 Buick Regal Olympic Gold

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When the key is turned to the start position, the current passes through the ignition switch, down the heavy yellow wire, to the junction with the wiring loom, but does not reach the solenoid on the starter. The wire is purple when it gets to the solenoid, the wiring diagram says it changes to purple after it goes through the anti theft moidule. If the key is on and the solenoid is activated remotely, the car runs for about 2 to 3 seconds, then dies. Where is the module actually located and how do I reset or replace it?

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If it turns out to be your anti-theft unit as the problem, contact your dealer and give them your VIN number. They will be able to tell you the code and procedure on how to reset it

Posted on Oct 19, 2010

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How to bypass the neutral safety switch on a 2000 Chevy Silverado Z 71 4 x 4


The purple wire with a white stripe goes to the starter from the neutral safety switch. I believe it is the yellow wire at the neutral safety switch that will have the the signal from the ignition switch for the start signal. ( Test this yellow wire with a test light while holding the key in the start position to see if it lights to make sure yellow is the correct color ) and join the wires together. This will by-pass the neutral safety switch

Aug 22, 2015 | Cars & Trucks

1 Answer

1989 f250 wont start dead silence when i turn key on replaced ignition switch, starter & solenoid, truck will start if i jump points on solenoid


Two parts to this circuit, the low current: power supply to the ignition switch which then passes to the small wire on the solenoid when you turn the key to the start position, at this point there should be an audible "click" from the solenoid. Don't forget the solenoid needs an earth to operate, so check the earth path too, usually through its attachment point(s) Check that the ignition switch has power going to it. Check that the power is transferred to the start wire when the key is turned. Check the power is arriving at the solenoid, small wire. Check the solenoid has a good earth. Does the solenoid "click" when you try to start? Yes to all this? Then the low current side is good. The high current side: a permanent live (hot) to one side of the solenoid. When the key is turned to the start position and so long as the solenoid "clicks" then the power to the permanently live terminal is transferred to the other high current terminal. If it is not, then the terminals inside the solenoid are burned/dirty/high resistance. You might be able to dismantle, else change the solenoid. If the power does transfer, but the starter motor does not turn, then suspect the starter motor itself. Check there is a good earth for the starter motor, the heavy duty cable to the engine is in good condition, terminals clean and tight etc. If all good, then the starter motor is most likely U/S.

Sep 13, 2013 | 2004 Ford E250

1 Answer

Starter not getting voltage


The starter gets powered by the solenoid which is energized when the ignition key is turned to the start position. Look at the picture below and read the sequence of operation below it. Once you find out what is NOT happening - you can troubleshoot back from there.

8_23_2012_9_53_22_pm.jpg

The IGNITION KEY SWITCH is connected by a small wire to the terminal in the GREEN circle on the SOLENOID. The battery is connected by a thick, heavy cable to the terminal in the RED circle of the SOLENOID. The terminal in the YELLOW circle of the SOLENOID is connected to a thick, heavy cable that goes directly into the STARTER MOTOR.

The -12 volts from the battery is connected to the car's engine, frame and body. The entire car has -12 volts available to all electric (and mechanical) parts, so only one wire is needed to energize those parts.

When the key is held in the START position, +12 volts from the battery is passed through the IGNITION SWITCH to the GREEN terminal on the SOLENOID. This causes the SOLENOID to (1) become energized, (2) internally physically connects the +12 volts RED terminal to the YELLOW terminal and (3) physically engages the STARTER to the engine's flywheel. When this happens, the +12 volts from the battery appears on the YELLOW terminal; and directly into the STARTER MOTOR. The STARTER MOTOR spins. Since it is engaging the flywheel, the flywheel turns too and the engine attempts to start. Once the engine is running, the key is released. The SOLENOID (1) becomes de-energized (2) opens the physical connection between the RED and YELLOW terminals, (3) disengages the STARTER MOTOR from the flywheel and the STARTER MOTOR stops spinning.

I hope this helps!

Aug 23, 2012 | 1998 Honda Accord

1 Answer

I have a 98 monte carlo 3.1 auto trans. when i turn the key to start, the security light flashes and it does nothing


Have it checked for DTC'S - diagnostic trouble code's . I suspect the problem is with the tdm module or the ignition switch ???? Assuming will only get you into trouble . If the PCM - engine computer does not see the right coded meassage from the TDM it won't turn on the fuel injectors or it will cut them off in two seconds . .
Buick Security Systems 1998 Chevy is the same .
Ignition Key With Wrong Resistor Pellet Code is Used To Start Engine
The theft deterrent module performs one of the two following actions when you attempt to start the vehicle with a wrong ignition key:
• There are 15 PASS-Key® II resistance ranges. The PASS-Key® II resistance may be one of the 14 valid but incorrect PASS-Key® II resistance ranges. The theft deterrent module will perform the following actions when you attempt to start the vehicle (if the condition is present during an engine start attempt or for 1 second any time after the engine has started):
• Turns on the SECURITY indicator
• Sends a password to the PCM through the fuel enable signal circuit
• The password disables fuel delivery to the engine.
• Disables the theft deterrent relay, which disables the starter circuit
• Disables sampling of the PASS-Key® II resistance for 3 minutes
• The 3 minute time period is called the shut-down period.
• Disconnecting the battery will not clear the timer sequence. The timer sequence will resume when battery power is restored.
• Inserting the proper key during the vehicle shut-down period will not start the engine. The engine will not start until the shut-down period has elapsed.
• After the shut-down period, the engine will start if the correct ignition key resistor pellet is used.
• The PASS-Key® II resistance may be correct and allow the engine to start. Later during the same ignition cycle, the PASS-Key® II resistance may be one of the 14 valid but incorrect resistance ranges. The theft deterrent module will perform the following actions:
• Enters the fail-enable mode
• Turns ON the SECURITY indicator
• Sends a password to the PCM through the fuel enable signal circuit when more attempts to start the engine occur
• The password allows the fuel enable circuit to deliver fuel to the engine.
• Enables the theft deterrent relay, which also enables the starter circuit.

Ignition Key With Correct Resistor Pellet Code is Used To Start Engine
The theft deterrent module performs the following actions when the correct ignition key is used in order to start the vehicle:
• Enables the theft deterrent relay. The theft deterrent relay enables the starter unit.
• Sends a password to the Powertrain Control Module (PCM) through the fuel enable signal circuit. As a result, the PCM allows fuel delivery to the engine.


By pass theft system .
GM VATS Key Resistor Key Security Bypass

Sep 06, 2017 | 1998 Chevrolet Monte Carlo

2 Answers

WHAT WRONG WITH A TRUCK WHEN YOU CHANGE A STARTER OUT AND IT WILL NOT SWITCH OR CRANK OR TURN OVER


I need more info on the truck sutch as year make model engine trans auto or manual .

Aug 24, 2010 | 1983 Chevrolet Chevy

1 Answer

Car wont start reads pass key fault


Passlock I reset.

1. Attempt to start the car, let it stall, but DO NOT turn the key off! Leave it in RUN.
2. Wait 10 minutes or until the Theft Sys light glows steady instead of blinking.
3. Do not turn the key off, but start it immediately.
4. This should reset your Passlock system.




PASSLOCK I or II DISABLEMENT

The following is a procedure to disable Passlock I or II Systems for vehicles
in which remote start/stop system installations are required. This procedure
is required because a remote start system will not function with the current
Theft Deterrent System (Passlock) which is included on many 1996 and up GM
vehicles.

Please note that this modification is intended to be used only in conjunction
with the installation of a remote start/stop system and does not provide a
procedure to install a remote start/stop system.

CAUSE
If an attempt is made to start a vehicle by a means other than a key rotation
in the ignition switch, the Body Control Module (BCM) will interpret this
start as a vehicle theft and disable the fuel injectors.

CORRECTION
A minor wiring modification may be made to allow the vehicle to be started
remotely. This modification includes adding a switch to allow the customer to
select ?ON? to allow remote starting or ?OFF? for normal Passlock operation.

CAUTION: When this modification is performed and the switch is set to the ON
position, the theft deterrent feature will be disabled. When the theft
deterrent is disabled the SECURITY/THEFT SYSTEM telltale will light up
indicating that the theft deterrent system is NOT functioning.

PASSLOCK MODIFICATION
Refer to appropriate GM service manuals and/or SVMQP Electrical Guideline
Manual for instruction on splicing and electrical connections.
1. Select a suitable on-off switch (see note below) which will be used to
disable/
enable the Passlock System. Mount the switch in a location such that it is
accessible to the driver and will not interfere with normal vehicle operation.


NOTE: This is an extremely low current circuit (approx. 7mA), it is therefore
very important that a high quality, low energy, fast acting switch be
utilized for this application.
2. Turn the ignition switch to the OFF position.
3. Locate the Main Ignition Switch Harness in the Column. GM's Passlock
System wires exit the Ignition Switch Tumbler together and then join with the
Main Ignition Switch Harness. (See http://www.bulldogsecurity.com/ or
http://64.85.6.118/diagrams/diagrams.asp and select your Make, Model and
Year for wire colors and clues on the quickest way to access these wires.)
4. Locate the Yellow Passlock Data Wire which is included in a bundle of
three tiny (20 GA) wires wrapped in friction tape.
Cut this wire and splice a 0.5mm2 (20 GA) yellow wire to each end of the cut
wire.
Keep wire length to a minimum. Route modification wires clear of moving parts.


Connect the yellow wires to the switch such that the contacts are OPEN when
the switch is in the ON position.
5. Turn modification switch to the OFF postion (contacts closed).
6. Start vehicle to verify normal operation. If engine ?cranks but will not
start"
recheck the switch position (contacts should be closed), wire connectors and
modification wiring.

SWITCH OPERATION

To enable remote start:
Start the engine with the ignition key (modification switch must be in the
OFF
position). Turn modification switch to the ON position (contacts open). The
SECURITY/THEFT SYSTEM Telltale will light up indicating that the Passlock
System is inoperative.
Once the SECURITY/THEFT SYSTEM telltale has been on for at least 5 seconds
the vehicle can be turned off and then remotely started.

To disable remote start:
The Passlock System can be reactivated by turning the modification switch OFF
(contacts closed). Vehicle can either be running or off when this is done.

Please note that the VCM/PCM will record Diagnostic Trouble Codes (DTCs)
related to the security system when the modification switch is in the ON
position (circuit open). This is due to the way that the VCM/PCM interprets
this condition.

NOTICE
Any condition which removes battery power from the Vehicle Control
Module/Powertrain Control Module (VCM/PCM) (e.g. dead battery, disconnected
harness connectors, etc.) will prevent the vehicle from being restarted. If
the engine exhibits a ?cranks but will not start? symptom, place the
modification switch in the OFF (contacts closed) position. This will
reactivate the Passlock System and allow the vehicle to be started with the
ignition key




Dec 12, 2009 | 1995 Chevrolet Caprice Classic

1 Answer

I need to know what color the ignition wire is so i can install a kill switch on my 06 F250 Powerstroke


hi, hope this will help.....if it does, could you leave a positive feedback for me please...many thanx..........
PART COLOR LOCATION
12 VOLT CONSTANT BLUE/RED (+) IGNITION SWITCH HARNESS
STARTER BLUE/WHITE (+) IGNITION SWITCH HARNESS
STARTER 2 N/A N/A
IGNITION 1 WHITE/ORANGE (+) IGNITION SWITCH HARNESS
IGNITION 2 N/A N/A
IGNITION 3 N/A N/A
ACCESSORY/HEATER BLOWER 1 BROWN/YELLOW (+) IGN SWITCH HARNESS
ACCESSORY/HEATER BLOWER 2 PURPLE/GREEN (+) IGN SWITCH HARNESS
KEYSENSE BLUE/GRAY (+) IGNITION SWITCH HARNESS
PARKING LIGHTS ( - ) GRAY (-) AT HEADLIGHT SWITCH
PARKING LIGHTS ( + ) PURPLE/WHITE (+) SMART JUNCTION BOX IN PASSENGER KICK PANEL
POWER LOCK BLUE/LIGHT GREEN (-) TYPE (B) IN DRIVERS KICK PANEL
POWER UNLOCK YELLOW/PURPLE (-) TYPE (B) IN DRIVERS KICK PANEL
DOOR TRIGGER VIOLET(+) UNDER DRIVERS SILL IN HARNESS COMING FROM PASS SIDE
DOMELIGHT SUPERVISION GREEN/BLUE (-) HEADLIGHT SWITCH
HORN YELLOW/RED (-) AT STEERING COLUMN HARNESS
TACH BLUE(AC) AT HARNESS NEXT TO BRAKE PEDAL
WAIT TO START LIGHT N/A N/A
BRAKE PURPLE/WHITE (+) AT SWITCH ABOVE BRAKE PEDAL
ANTI-THEFT TRANSPONDER ANTI-THEFT TRANSPONDER @ IGNITION SWITCH TUMBLER

Aug 05, 2009 | Ford Super Duty Cars & Trucks

1 Answer

Radio turns off in starting position


this look like a low battery and every time you try to crank your car it takes more power and kill the main power to the radio
solution # 2 the radio as 2 power wires one is always hot ( with current) and the other is connected to the ignition switch if you have replaced the radio those 2 wires maybe are connected backwards the one that goes to the switch is probably connected directly to the battery and the one is suppose to be always hot is probably connected to the switch if you have the original radio have your battery tested and if is ok then try get a haynes book at any auto parts for you car and try to follow the wire that is always hot normally is a yellow or orange wire
solution #3 this apply only if you car still have the original radio
turn your ignition switch to the on position but don't crank your car and turn your radio on select a radio station then turn your ignition key off and wait 3 minutes then turn your ignition switch on again with out cranking your car and the radio should be in the same radio station you select if this test pass then chances are is your battery getting low and if this test fail then the hot wire has a blow fuse look for the fuse inside the hook let me know what happend and good luck

Mar 18, 2009 | 2001 Toyota Sienna

1 Answer

No Power to Fuel pump


I would check the ground for the fuel pump relay that operates the switch side of the relay.
You should have 2 12v inputs to the relay. When the relay gets 12v input, it closes the relay switch on the heavy current side that sends 12v to the fuel pump.

A relay is needed because you don't want heavy current going through the switch.

Also, most cars only run the fuel pump for 2 seconds when the key is turned on because you don't want the fuel pump running without the car running. If you listen closely at the fuel tank, you should hear the pump run for 2 seconds when you turn the key to "ON"
When the key is turned to "START", the fuel pump should run continuously.
The engine computer tells the fuel pump to shut off if the engine rpms are zero.
So, I would check the switch side of the relay. Power amd ground.

Mar 01, 2009 | 1992 Jaguar XJ6

1 Answer

What color is the wire to the iginition


Tim,
There a 2 red battery feed wires going into the ignition switch. When you turn the switch to start, battery voltage goes out on the heavy gage purple or yellow wire to the clutch switch or park/neutral switch ( manual or automatic) then to the starter solenoid.
Hope this helps, let me know.
Regards,

Feb 26, 2009 | 1991 Chevrolet C1500

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