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Re: is the switch on the park brake normaly open or...
Check the seat switch
it doesn't think you're their... it should be normally closed, brake applied its open. when you release the brake if the seat switch isn't open ( you in it ) it'll die
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When this happens, usually it is because of a failure in the gearshift selector switch
solenoid. The gearshift selector solenoid is the switch that unlock the lever from park position when driver turns on the ignition and release brake
pedal.
When brake pedal is depressed with selector in
park position, this energizes the solenoid, unlocking the shifter. Teh solenoid is energised by same circuit connecting the brake lights. When for some reason (a short for example) the brake light fuse that protects the circuit blows, this will result in a
failure to energize the solenoid, and lever won't be released from park position. You find the fuse in the fuse box, on Discovery this is fuse number 1. This is a 15 Amps
blue fuse. Fuse is located in the fascia fuse panel. In most cases you fix the problem by replacing the brake light fuse.
Another reason for a failure to energize the solenoid is a faulty brake light switch.
This means the solenoid itself is faulty and need to be replaced.
How to proceed:
Check brake lights. If brake lights are not working, check and replace fuse number one in the fuse box. This will solve the problem in most cases.
If fuse keeps blowing there must be a short in the brake lights wiring.
You will need to access the rear light access panels and unplug the wiring harnesses that connects to the tail light
assemblies. Replace the fuse and try again to start the car, with all tail lights harnesses disconnected. If it starts drive the vehicle to the nearest mechanic, the vehicle will not be safe without tail and brake lights.
When fuse is not blowing check the brake light switch. Remove
the panel above the brake pedal. There you find several switches, the second from the bottom will be the brake light switch. Unplug the switch connector, put parking brake on, turn on ignition and short the two green wired pins. You should hear a click, while shorting the contacts move the shifter
out of park position
When brake light are working fine, and lever stays on park position, it
is usually the solenoid or its connections that are faulty. Try connecting directly the solenoid to power. The solenoid is connected to red and black wires.
Apply 12 Volts across the wires, following polarity. If this worked the solenoid will click, and you will be able to move the gear out of
parkposition. When there is no click you need to replace the faulty solenoid that is located in the shifter assembly.
the switch has a short or one of your wires is shorting, remove door panel inspect the wire's for burnt areas and depending on the vehicle replace the swich.
its a brake fuse not the tail park lights. got trailer wiring hacks on car/ (look)
there are 2 lamps, lamps short. put in one new lamp, does it work? y/n if no , and the new brake lamp switch as 12v on both sides key on and brake pedal reset then the wires are open. if the voltage reads way low not 12v this line is grounding out.
this is easy to do with and DMM for say $20 , sold at walfart too.
Stop Lamp Circuit Description
The STOP HAZ fuse in the IP junction block supplies battery positive voltage to the normally open stop lamp switch. When the driver presses the brake pedal, the switch contacts close and battery positive voltage is supplied to the center mounted stop lamp (CHMSL) and both left and right stop lamp assemblies. The left stop lamp is grounded at G304 and the right stop lamp is grounded at G304.
2
Inspect the 20 Amp STOP HAZ fuse.
Is the STOP HAZ fuse open?
YES - Go to Step 11
NO - Go to Step 3
3
Use a test lamp in order to backprobe connector C1 of the brake switch connector between terminal A and ground. Refer to Circuit Testing in Wiring Systems.
Does the test lamp light?
YES - Go to Step 4
NO - Go to Step 5
4
With the brake switch closed, Test for positive battery voltage at terminal B of connector C1. Refer to Circuit Testing in Wiring Systems.
Is voltage present?
YES - Go to Step 6
NO - Go to Step 7
5
Repair the open or short to ground in the Fuse Output-Battery between the fuse block and the brake switch. Refer to Wiring Repairs in Wiring Systems.
Is the repair complete?
YES - System OK
--
6
Use a test lamp in order to backprobe the turn/hazard headlamp switch assembly connector C2 terminal A and ground.
Depress the brake pedal.
Does the test lamp light?
YES - Go to Step 8
NO - Go to Step 9
7
Inspect the adjustment of the brake switch. If the adjustment is correct, replace the brake switch.
Is the repair complete?
YES - System OK
--
8
Replace the turn/hazard headlamp switch assembly.
Is the repair complete?
System OK
--
9
Repair the open in Stop Lamp Switch Output between the brake switch and the turn/hazard headlamp switch assembly. Refer to Wiring Repairs in Wiring Systems.
Is the repair complete?
System OK
--
10
With brake switch open test terminal A of the brake switch for continuity to ground. Refer to Circuit Testing in Wiring Systems.
Is ground present?
YES - Go to Step 11
NO - Go to Step 12
11
Repair short to ground in Fuse Output-Battery Circuit. Refer to Wiring Repairs in Wiring Systems.
Is repair complete?
System OK
--
12
Test the Stop Lamp Switch Output Circuit for continuity to ground. Refer to Circuit Testing in Wiring Systems.
Is ground present?
YES - Go to Step 13
NO - Go to Step 14
13
Repair short to ground in the Stop Lamp Switch Output Circuit. Refer to Wiring Repairs in Wiring Systems.
Is repair complete?
System OK
--
14
Test terminals F,G,B and C on the Hazard Warning Switch for continuity to ground. Refer to Circuit Testing in Wiring Systems.
Is ground present?
Go to Step 15
--
15
Repair short to ground in suspect CKT. Refer to Wiring Repairs in Wiring Systems.
Is repair complete?
System OK
--
The blower motors problem is the resistor has gone bad. Sorry I don't know exactly where yours is, But I think it is under the hood , passenger side ,against the firewall, next to the blower. It will have three or four big wires going to it. On the brake I would replace the switch, sounds as if it shorted and check the wires , see if they have melted. The switch is on the brake pedal under the dash. Let me know
Randy
may want to check the brake pedal switch located on top of the brake pedal arm. If all fuses looks good, replace the brake pedal switch, which can also cause to not shift out of park.
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