Cadillac 24221125 Switch,Parking/Neutral Position & Back Up Lamp

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The Park/Lock system prevents the shift lever from moving out of Park without depressing the brake pedal and the ignition key from being removed unless the shift lever is in Park. To remove the actuator, park the vehicle in Neutral, set the parking brake, and disable the airbag system. Disconnect the wiring and pry off the actuator from the cable shift cam and steering column. Snap the actuator onto the cable shift cam and steering column cover and reconnect the wiring. Press the adjuster block to disengage the internal teeth and slide it away from the actuator. To install the actuator, push the tab to lock it in place and reconnect the battery. Check the operation by ensuring the lever can only move out of Park when the brake pedal is depressed and readjust if needed. Finally, reinstall the knee bolster.

The Park/Lock system protects the shift lever from being taken out of park unless the brake pedal is depressed and also prevents the ignition key from being removed unless it is in the parked position. This happens by activating a solenoid when starting up a car that locks the car in park. When the driver pushes on the brake pedal, this solenoid becomes inactive, permitting other gears to be engaged by moving or altering the level. In case of an electric failure there is a manual means of shifting out of park. The process entails removing the shifter trim boot and finding the override lever at the top right side of shifter bracket and pushing it forward toward vehicle front. If there is need of replacing shift lock control solenoid, one should remove steering column covers and disconnect electrical connector. Then using flat-bladed screwdriver, pry off solenoid from column; installation is as simple as removal.

The Park/Neutral Position switch, also known as the transmission range switch, is located on the side of the transmission over the manual shaft. It is an information sensor for the Powertrain Control Module (PCM) and prevents the engine from starting in any gear other than park or neutral and activating the backup lights.

Try to start the engine in each gear. The engine should crank only in Park or Neutral. Make sure the steering column lock allows the key to go into the Lock position only when the shift lever is in Park. The ignition key should come out only in the Lock position.

Start by ensuring that the engine only starts in Park or Neutral. The switch is located inside the vehicle at the bottom of the steering column. Apply the parking brake and place the gear selector in Neutral. Rotate the switch clockwise to the Low position and then move the gear selector to Park, which will ratchet the switch to the correct position.

Remove the manual lever nut and the manual lever itself.

The oxygen sensor in the exhaust monitors oxygen content. To check it, you can check its millivolt signal while the engine warms up. It is also important to inspect the oxygen sensor heater and ensure it receives proper voltage.

For adjustment on 1995 and later models, move the shift lever to the Park position, allowing the main housing and housing back to ratchet the switch to the correct position.

The ignition key should come out only in the Lock position.

To adjust the switch, you need to loosen the mounting bolts and slightly turn it until the engine only starts in park or neutral, then tighten the bolts.

The Park/Neutral Position switch is located on the side of the transmission over the manual shaft.

Remove the manual lever retaining nut and remove the manual lever from the manual shaft.

The intake air temperature (IAT) sensor acts as a thermistor. To check it, you can measure its resistance at different temperatures to ensure it changes as expected. Additionally, you should monitor the IAT sensor using a scan tool to verify its performance.

Remove the TR switch mounting bolts and the TR switch.

To replace the shift lock control solenoid, the steering column covers need to be removed and the electrical connector disconnected. The solenoid can then be pried from the column using a flat-bladed screwdriver. Installation is the reverse of removal.

The operation of the actuator should be checked by making sure that the lever can only be moved out of Park when the brake pedal is depressed, and readjusted if necessary.

To remove the Park/Neutral switch on 1994 models, unplug the electrical connector and pull the switch straight out of the steering column. Align the actuator with the holes in the shift tube, press down on the front of the switch until the tangs snap into the rectangular holes in the steering column jacket.

Remove the TR switch mounting bolts and the TR switch.

Finally, the knee bolster should be reinstalled.

Align the slots on the switch with the notch on the switch body and install it onto the shaft.

Verify that the engine will start only in PARK and NEUTRAL.

The operation of the actuator should be checked by making sure that the lever can only be moved out of Park when the brake pedal is depressed, and readjusted if necessary.

Installation involves pressing the switch onto the steering column, connecting the electrical connectors, and adjusting the switch.

Make sure the steering column lock allows the key to go into the Lock position only when the shift lever is in Park.

Apply the parking brake and put the shift lever in NEUTRAL.

Installation involves using a special adjustment tool, aligning the switch with the manual shaft flats, sliding it onto the manual shaft, and securing it with mounting bolts. Remove the adjustment tool and complete the remaining installation steps, tightening the manual lever retaining nut to the specified torque.

The manifold absolute pressure (MAP) sensor monitors intake manifold pressure changes and varies its voltage output accordingly. To check it, you should check the reference voltage and signal voltage with the ignition on and engine off, and observe voltage changes as the engine's vacuum changes.