Question about 1995 Hyundai Sonata

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Hyundia Sonata 1995

My 1995 Sonata would not crank in the "Park"position and I can only start it in the "Neutral". Is that a switch near the "T" bar that I need to chance?

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Window washer

Posted on Oct 19, 2008

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2002 chevy trailblazer and it will not crank or start and the key has gotten stuck in the ignition. I also got a jumpstart and it still didn't start. What is wrong, Please?


Could be a number of thing's , can you do automotive electrical testing ? Do you know if starting is PCM / ECM controlled or BCM controlled ? Do you know what these are ? BCM - body control module , PCM/ECM - engine computer !
Moving the ignition switch to the START position sends a 12-volt signal to the engine control module (ECM)/powertrain control module (PCM) Crank Request circuit. The ECM/PCM verifies that the transmission is in the PARK or NEUTRAL position. With the transmission in Park, voltage flows through the Park/Neutral position switch and feeds the starter relay coil. The PCM then grounds the control circuit of the starter relay. When the starter relay is energized it allows battery positive voltage to the starter solenoid S terminal. On some vehicles the starter will continue to crank the engine with the key released until it starts or the crank command has timed out to prevent excessive heat build up in the starter circuitry or the ECM/PCM receives an engine run flag.
Circuit Description (BCM Controlled)
Moving the ignition to the START position signals the body control module (BCM) that engine crank has been requested. The BCM verifies that theft is not active and sends a serial data message to the powertrain control module (PCM) requesting engine start. The BCM also energizes the RUN/CRANK RELAY. When the RUN/CRANK RELAY switch side closes, and the vehicle is in Park or Neutral or with the clutch is fully depressed, if equipped, supplies voltage to the starter relay coil. The PCM verifies the transmission is in Park or Neutral and the clutch is fully depressed, if equipped. The PCM will then ground the control circuit of the starter relay, closing the switch supplying voltage to the starter solenoid. On some vehicles the starter will continue to crank the engine with the key released until it starts of the crank command has timed out to prevent excessive heat build up in the starter circuitry or the PCM receives an engine run flag.
Do you know what a park neutral safety switch is ? What do you mean key stuck in ignition ? Can't turn the key to off position , or you can an the key will not come out ?
Your best bet , take it to a qualified repair shop .

Apr 04, 2017 | 2002 Chevrolet TrailBlazer

1 Answer

My 2007 Uplander won't start. We've replaced to battery and starter relay. Still won't even click when trying to start.


How to voltage drop test starter motor circuit This is how a normal starting system use to work ! Not now , computer's involved , communication networks etc.....
Here is how your's works

For ignition switch power modes refer to Body Control System Description and Operation . When the ignition switch is placed in the Start position a discrete signal is supplied to the body control module (BCM) notifying it that the ignition is in the Start position. The BCM then sends a message to the engine control module (ECM) notifying it that CRANK has been requested. At the same time the BCM is supplying 12 volts for the IGN 1 relay closing it and supplying battery positive voltage for the crank relay coil. The ECM verifies that the transmission is in Park or Neutral. If it is, the ECM grounds the control circuit of the crank relay. When this occurs battery positive voltage is supplied through the switch side of the crank relay to the S terminal of the starter solenoid.

Sorry but your best bet would be to take it to a qualified repair shop ! Or the Chevy dealer . Could have DTC'S - diagnostic trouble codes stored in the BCM !

DTC P0615 Starter Relay Control Circuit

Circuit/System Verification
Ignition ON, verify that no starter relay, theft deterrent, or automatic transmission DTCs are set that would cause the ECM to disable starting.
? If DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
Ignition ON, observe the scan tool BCM Starter Switch parameter. Place ignition switch in the crank position, the parameter should display ON.
? If not the specified value, refer to Power Mode Mismatch .
Transmission range selector in park , verify the scan tool ECM PNP Switch and TCM IMS parameters display Park/Neutral.
? If the TCM IMS parameter does not indicate Park/Neutral, refer to Transmission Internal Mode Switch Logic .
? If the ECM Park/Neutral parameter does not indicate Park/Neutral, refer to ECM Park Switch Circuit Malfunction.
Transmission range selector in park or neutral, attempt to start the vehicle. The starter relay should click and the engine should begin cranking.
? If the starter relay does not click or the engine does not crank, refer to Starter Relay Circuit Malfunction.

Power to many of this vehicle's circuits are controlled by the module that is designated the Power Mode Master (PMM). This vehicle's PMM is the Body Control Module (BCM). The PMM controls which power mode (Run, Accessory, Crank, Retained Accessory Power, or Off) is active.

Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle, the PMM is the body control module (BCM). The PMM receives 3 discrete ignition switch signals to differentiate which power mode will be sent over the Serial Data circuits. The table below illustrates the state of these inputs in correspondence to the ignition switch position:

Mar 29, 2017 | Cars & Trucks

1 Answer

Where is the safety switch for a 2006 chevy malibu


Safety switch ? For what ? Park neutral safety switch ,is this what you mean ? Your vehicle not starting ? There is a lot more involved then just that switch.
Circuit Description
For ignition switch power modes refer to Body Control System Description and Operation. Once the ignition is placed in the Run/Crank position, the control circuit of the Run/Crank relay is grounded by the body control module (BCM). With the Run/Crank relay switch closed, battery positive voltage flows through it and on to the park/neutral position (PNP) switch. With the PNP switch in either the Park or Neutral position, battery positive voltage will flow to the starter relay coil supply voltage input terminal of the powertrain control module and the coil side of the starter relay. Placing the ignition in the START position sends a message to the engine control module (ECM)/powertrain control module (PCM) requesting engine start. If the ECM/PCM has determined that the transmission is in Park or Neutral and theft is not active, it will ground the control circuit of the starter relay. Battery positive voltage will then flow through the switch side of the starter relay to the S terminal of the starter solenoid, cranking the engine. For remote vehicle start (RVS) information, refer to Keyless Entry System Description and Operation.

May 25, 2016 | Cars & Trucks

1 Answer

Will not crank in park position


What type and year of vehicle, and yes there is a neutral safety switch.

Apr 10, 2014 | Cars & Trucks

1 Answer

1995 lumina wont start or crank over


Could be the neutral safety switch, or the security system, or a wiring problem.
If the security light stays on, you may have a problem with the VATS system reading the chip in the key. Try a spare key.
If it cranks in neutral and not in park, the neutral safety switch may be faulty.

Feb 24, 2013 | 1995 Chevrolet Lumina

1 Answer

What is a neutral safety switch?


The Neutral Safety switch monitors the position of your gear selector lever and either interrupts or allows the starting circuit in your car or truck to do its job. On newer vehicles it may also monitor the position of the brake pedal to make sure that the vehicle is in park or neutral AND that your foot is on the brake.

If your vehicle is equipped with a neutral safety switch, it should NOT start UNLESS the transmission is in Neutral or Park. On the other hand your vehicle SHOULD start when it is in Neutral or Park. If your car will start in Neutral but not in Park, you have a bad switch. Also, if your car or truck will only start by turning the key to the start position and wiggling the gear selector lever, your neutral safty switch is in need of replacement.

The nuetral safety switch is usually found near the gear shifter. If your car has the gear shift on the column, then the neutral safety switch is usully mounted on the steering column near the brake pedal. On floor mount or console mount vehicles you will find the nuetral safety switch mounted near or on the shifter mechanism.

Oct 24, 2012 | 1993 Cadillac DeVille

2 Answers

Symptoms for a faulty neutral safety switch


No start (engine doesn't crank with starter motor) in neutral and park position, one or both

Oct 16, 2012 | Cars & Trucks

1 Answer

Car starts in neutral not in park


I would look at the operation and/or adjustment of the gear selector and the transmission range sensor (often mistakenly referred to as a 'neutral safety switch").

I say adjustment because the Neutral gate is mid-range of the selector, while the Park gate is at one end of the range. Thus, if the selector mechanism and the sensor position are not properly aligned, the sensor amy more accurately report the Neutral gate than the Park gate, resulting in cranking in the Neutral position but not while in Park.

Do you sometimes have to wiggle the shifter in Neutral to get it to crank?

Oct 04, 2012 | Dodge Cars & Trucks

1 Answer

I HAVE A 1990 LS 400 WHEN TURNING KEY NO CRANKING AND HAVE GOOD BATTERY POWER. NO POWER TO STARTER WIRE ON STARTER SELINOD.WHAT CAN IT BE


It could be a bad ignition switch or bad starter wire from the starter switch, or the PNP is not adjusted correctly:

Here are instructions on how to remove and replace the PNP, but read over it to understand how to adjust:
Park/Neutral Safety Switch REMOVAL AND INSTALLATION ES300 1993-94 Models
  1. With the ignition switch in the LOCK position, disconnect the negative battery terminal. If equipped with an air bag system, wait at least 90 seconds or longer before performing any other work.
  2. Raise and safely support the vehicle.
  3. Disconnect the Park/Neutral switch connector.
  4. Remove the clip from the shift control cable.
  5. Remove the nut and control cable.
  6. Remove the bolts and pull out the Park/Neutral switch. To install:
  7. Install the Park/Neutral switch and loosely install the bolts.
  8. Adjust the switch and torque the bolts to 48 inch lbs. (5 Nm).
  9. Install the control shaft lever.
  10. Install the control shaft cable and torque the nut to 9 ft. lbs. (13 Nm). Fig. 1: The transaxle control shaft lever has a nut and washer to retain it - 1993-94 ES300 54617.gif
    Fig. 2: Removing the Park/Neutral switch - 1993-94 ES300 54618.gif

  11. Install the clip to the shift control cable.
  12. Lower the vehicle.
  13. Connect the negative battery cable.
  14. Make sure the vehicle will start only in the PARK or NEUTRAL position.
1995-97 Models Fig. 3: Aligning the neutral base line and groove - 1995-97 ES300 293716.gif
Fig. 4: Park/Neutral switch removal and installation - GS300, LS400, SC300 and SC400 300569.gif
Fig. 5: Park/Neutral switch adjustment - GS300, LS400, SC300 and SC400 300571.gif
  1. With the ignition switch OFF, disconnect the battery cables, negative terminal first. Allow 90 seconds to elapse before performing any other work.
  2. Apply the parking brake fully and block the rear wheels.
  3. Disconnect the electrical connector from the Park/Neutral position switch.
  4. Remove the locknut and disconnect the control cable from the manual shift lever.
  5. Remove the clip from the holding the control cable to the bracket.
  6. Remove the nut, washer and the manual shift lever from the manual valve shaft.
  7. Using a flat bladed tool, bend the lock washer back away from the nut.
  8. Remove the nut and lock washer from the Park/Neutral switch.
  9. Remove the two bolts and the Park/Neutral position switch. To install:
  10. Install the Park/Neutral position switch to the manual valve shaft. Leave the two bolts loose at this time.
  11. Install the lock washer and nut. Torque the nut to 61 inch lbs. (7 Nm).
  12. Using a flat bladed tool, bend the lock washer over the nut to secure the nut in place.
  13. Adjust the Park/Neutral as follows:
    1. Install the manual shift lever to the Park/Neutral switch and set the shift lever to the neutral ( N) position.
    2. Align the groove and the neutral basic line on the Park/Neutral switch.
    3. Hold the Park/Neutral switch in this position and tighten the two bolts to 48 inch lbs. (5 Nm).
  14. Install the manual shift lever with washer and nut.
  15. Install the control cable to the manual shift lever and install the nut. Torque the nut to 11 ft. lbs. (15 Nm).
  16. Install the control cable to the bracket by installing the clip.
  17. Connect the electrical connector to the Park/Neutral switch.
  18. Lower the vehicle and check the vehicles shifting positions.
  19. Connect the negative battery cable to the battery.
  20. Verify that the vehicle only starts in PARK or NEUTRAL.
GS300, LS400, SC300 and SC400
  1. With the ignition switch OFF, disconnect the battery cables, negative terminal first. Allow 90 seconds to elapse before performing any other work.
  2. Raise and safely support the vehicle.
  3. If necessary, remove the front exhaust pipe.
  4. Disconnect the neutral start switch connector.
  5. Remove the control shaft shift lever.
  6. Pry off the washer and remove the nut.
  7. Remove the bolt and pull out the neutral start switch. To install:
  8. Install the Park/Neutral switch and loosely install the bolt.
  9. Adjust the switch as follows:
    1. Loosen the neutral start switch bolt and place the shift lever in the N position.
    2. Align the groove and the neutral basic line.
    3. Hold in position and tighten the bolt to 9 ft. lbs. (13 Nm).
  10. Install the nut and washer.
  11. Install the control shaft shift lever.
  12. Connect the electrical connector.
  13. Install the front exhaust pipe. Torque the front nuts to 46 ft. lbs. (62 Nm). Torque the pipe support bracket to bolts to 32 ft. lbs. (43 Nm). Torque the No. 2 front exhaust pipe to the front exhaust pipe bolts to 32 ft. lbs. (43 Nm).
  14. Lower the vehicle.
  15. Connect the negative battery cable to the battery.
  16. Verify that the vehicle will only start in the N or P positions.
---
Maybe try to press the brake pedal and run the gear shift throughout the full range of gears while the car is on level ground, and retry the starter to see if there is a faulty PNP adjustment.

Try to start in Neutral not Park, and jiggle the gear shift back and forth to see if the PNP is not adjusted right.

Good luck on this repair.

Nov 09, 2010 | 1992 Lexus Ls 400

3 Answers

Where is the neutral safty switch on a 95 3100 grand am and what happenes when it goes out?


on the top of the transmissin reaward near the firewall there is a good sixed plug and a shaft with an arm connected to a cable. This switch tells the engine control computer what gear is selected, the reverse lights to work and the starter circuit to make in park and neutral. Usally the switch doesn't fail in both neutral and park if you have a no start and it won't strart in nuetral either then you may be looking for other problems. If the back-up light fuse is blown you can't get out of park unless its just unlocked but the power off. tHE BRAKE LIGHT CIRCUIT IS INVOLVED TOO. The security light being on steady will cause a no start also. The starter itself can't be left out as puting power directly on the starters start post gets it to crank, Security system issues still may not let it run. Most common problem with the security system is the small wires on the ingtion lock tumbler breaks and then the ECM can't reconize the key.

Aug 26, 2009 | 1995 Pontiac Grand Am

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