What is the Battery Interlock Switch? - Canon PowerShot Pro1 Digital Camera

You bypassed the start safety and it starts/runs so battery and starter work along with kill. The first fault symptom is it will not crank engine?


If yes, suggest you troubleshoot the no crank. The typical start safety interlock is brake ON (clutch disengaged) and PTO off (some require seat occupied). You will need trace the the start engine circuit beginning with the S pole of the start switch through the entire safety interlock. Likely this will require a schematic of the interlock circuit as it is mfg specific.


What's is the make/model?

Sounds more like you might have a shifter interlock issue. But the solenoid for the shifter interlock is electric, so if the battery is dead and the cable is not moving freely, it could cause the shift lever to be stuck in park.

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Shift Interlock System
The shift interlock system prevents a shift out of PARK unless the brake pedal is depressed. The shift interlock system has a shift lock actuator mounted on the floor shifter assembly. If the ignition switch is in the RUN position, the shift actuator will allow the shifter to be moved out of PARK only when the brake pedal is pressed.
Electroniclly controlled !

Condition Possible Sources Action

• The shift interlock system does not release or lock correctly

• Fuse in battery junction box (BJB)

• Check fuses.

• Brake pedal position (BPP) switch

• CHECK the BPP switch. REFER to Section 206-09 .

• Floor shifter wiring and/or connectors
• Transmission selector lever
• Ignition system

• Go To Pinpoint Test A .

switches just complete a circuit
from your description it indicates a bad ground , dirty battery terminals or problem starter motor

Sounds like the ignition interlock at the transmission switch is out of adjustment or faulty. Bypass the key switch, at the starter, if it now cranks, it's in the interlock switch or the ignition switch.

Hi, I'm assuming your solenoid is not clicking. If that is the case, the problem is either the ignition switch or the interlock. The interlock is under the clutch pedal if you have a manual transmission or screwed into the transmission if you have an automatic.




neutral safety switch:

Hello, It sounds like the Ignition switch is bad or the adjustment for the Ignition switch is out of alignment. Some of the Ignition switches will have a rod in the steering column to reach switches under the dash. Check under the dash at the switches mounted around the Brake pedal lever. The switch at that point is an Interlock switch which senses that a foot is on the Brake before it allows you to shift out of Park. And it keeps supplying power when the engine is running.

It is quite common for feet to hit the Interlock switch and knock it out of alignment. When this happens it can cause several problems including yours. If the Interlock switch is still in position and not cracked or broken, then the Ignition switch is bad or out of adjustment.

This boils down to 1 rod or cable in the column with an adjustable switch on each end. The Interlock switch below the dash and the Ignition switch. To take off or adjust the Ignition switch you should remove the plastic column cover, disconnect the Battery and turn the Ignition switch to RUN or ACC. position. Then insert your key and press a drillbit under the spring release in the steering column just below the switch. Pull up with your key and the lock cylinder should come out of the Ignition switch.

There will be an Electric connector to remove and an adjustment screw on the side of the Ignition switch. You can see if the screw worked its way loose, reconnect the Battery and adjust the rod or cable. For all the work you may as well put in a new switch at this point. Adjust everything to function, then disconnect the Battery and reassemble the parts.

I hope my solution is very helpful in solving your problem.

CHECK BRAKE LIGHT SWITCH FUSE OR BRAKE - TRANSMISSION SHIFT INTERLOCK SOLENOID FUSE.IF BOTH FUSES OKAY.THE PROBLEM COULD BE A BAD BRAKE LIGHT SWITCH OR A BAD BRAKE TRANSMISSION SHIFT INTERLOCK SOLENOID.YOUR IGNITION SWITCH IS BROKEN.MAKE SURE YOUR BATTERY IS 12.5 VOLTS.IF NOT YOU CANT SHIFT INTO PARK.

Sounds like you are referring to the transmission interlock switch? This keeps the car from starting if you are not in park.

lock cylinder removal

Section 11-04: Steering Column 1996 Escort, Tracer Workshop Manual
REMOVAL AND INSTALLATION Ignition Switch Lock Cylinder Removal

1. WARNING: THE ELECTRICAL CIRCUIT NECESSARY FOR DRIVER SIDE AIR BAG MODULE DEPLOYMENT IS POWERED DIRECTLY FROM THE BATTERY. TO AVOID ACCIDENTAL DEPLOYMENT AND POSSIBLE PERSONAL INJURY, THE BATTERY GROUND CABLE MUST BE DISCONNECTED PRIOR TO SERVICING OR REPLACING ANY DRIVER SIDE AIR BAG MODULE SYSTEM COMPONENTS.
   Remove the steering wheel (3600). Refer to the procedure in this section.
   

1. Remove the multi-function switch (13K359). Refer to Section 11-05 for the removal procedure.
   

1. Disconnect the ignition switch electrical connector.
   

1. Remove the ignition/shifter interlock cable mounting bracket bolt and position the ignition/shifter interlock cable mounting bracket and the ignition/shifter interlock cable (3F719) aside.
   
   
   
   
   

1. Remove the four steering column upper mounting bracket bolts and lower the steering column (3C529).
   

1. Use a hammer and chisel to make a groove in the head of each of the two ignition switch lock cylinder bracket bolts.
   
   
   
   
   

1. Remove the two ignition switch lock cylinder bracket bolts with a screwdriver and discard the bolts.
   
   
   
   
   

1. Remove the ignition switch lock cylinder and the ignition switch lock cylinder bracket.
   

Installation

1. Position the ignition switch lock cylinder and bracket and install two new bolts, tightening them only enough to hold the ignition switch lock cylinder in position.
   

1. With the key in the ignition, verify the operation of the ignition switch lock cylinder. If necessary, reposition the ignition switch lock cylinder until it operates properly.
   

1. Tighten the ignition switch lock cylinder bracket bolts until the bolt heads break off.
   

1. Position the steering column and install the four steering column upper mounting bracket bolts. Tighten the steering column upper mounting bracket bolts to 9-14 Nm (80-124 lb-in).
   

1. On vehicles equipped with tilt column, remove the upper mounting bracket retaining pin.
   

1. Position the ignition/shifter interlock cable mounting bracket and install the bolt. Tighten the ignition/shifter interlock cable mounting bracket bolt to 4-6 Nm (35-53 lb-in).
   

1. Connect the ignition switch electrical connector.
   

1. Install the multi-function switch. Refer to Section 11-05 for the installation procedure.
   

1. Install the steering wheel. Refer to the procedure in this section.
   

1. Inspect the shift interlock system. Refer to Section 07-05 for the procedure.