Lighting System - Repair Instructions Cadillac ATS I

Brake Pedal Position Sensor Calibration

Note. Brake system does not use a brake switch, stoplight switch or brakelight switch. System uses a Brake Pedal Position Sensor to control these functions.

Calibration Criteria

Note. Do not apply the brake pedal during the brake pedal position sensor calibration procedure. Any movement of the brake pedal during this procedure will cause the calibration procedure to fail. If this occurs, the brake pedal position sensor calibration must be repeated.

Brake pedal position sensor calibration must be performed after the brake pedal position sensor, body control module (BCM), engine control module (ECM), or hybrid powertrain control module have been serviced. The calibration procedure will set the brake pedal position sensor home value. This value is used by the BCM and ECM/HPCM to determine the action of the driver applying the brake system and to provide this information to the vehicle subsystems via serial data.

Calibration Procedure

1. Apply the parking brake.
2. Ignition ON, engine OFF, place the transmission in the PARK position for automatic transmission or NEUTRAL position for manual transmission.
3. Install a scan tool.
4. Clear all DTCs before proceeding.
5. Navigate to the Configuration/Reset Functions menu of the BCM.
6. Select the Brake Pedal Position Sensor Learn procedure and follow the directions displayed on the screen.
7. Navigate to the Configuration/Reset Functions menu of the ECM/HPCM.
8. Select the Learn Functions menu.
9. Select the Brake Pedal Position Sensor Learn procedure and follow the directions displayed on the screen.

Brake Pedal Position Sensor Replacement

Note. Brake system does not use a brake switch, stoplight switch or brakelight switch. System uses a Brake Pedal Position Sensor to control these functions.

Removal Procedure

1. Remove the driver side instrument panel lower trim panel insulator. Refer to «Instrument Panel Lower Trim Panel Insulator Replacement (Left Side)»(/cadillac/ats/i-2012-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
2. Disconnect the brake pedal position sensor electrical connector.
3. Remove the brake pedal position sensor bolt (1).
4. Remove the brake pedal position sensor (1).

Installation Procedure

1. Position the fork of the brake pedal position sensor (1) over the brake pedal pin and install the brake pedal position sensor.
2. Install the brake pedal position sensor bolt (1).
3. Connect the brake pedal position sensor electrical connector.
4. Calibrate the brake pedal position sensor. Refer to «Brake Pedal Position Sensor Calibration»(/cadillac/ats/i-2012-2014/remont/exterior-lights/#lighting-system-repair-instructions__brake-pedal-position-sensor-calibration) .
5. Install the driver side instrument panel lower trim panel insulator. Refer to «Instrument Panel Lower Trim Panel Insulator Replacement (Left Side)»(/cadillac/ats/i-2012-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .

Scheme 1

Interior Lamp Switch Replacement

Scheme 2

Interior Lamp and Multifunction Switch Replacement

Scheme 3

Hazard Warning Switch Replacement

Scheme 4

Dimmer Switch Replacement

Scheme 5

Dome and Reading Lamp Switch Replacement

Scheme 6

Center Courtesy Lamp Replacement

Scheme 7

Center Reading and Courtesy Lamp Replacement

Scheme 8

Front Floor Courtesy Lamp Replacement

Scheme 9

Outside Rearview Mirror Courtesy Lamp Replacement

Scheme 10

Front Side Door Inside Handle Illumination Lamp Replacement

Scheme 11

Rear Side Door Inside Handle Illumination Lamp Replacement

Scheme 12

Front Side Door Courtesy Lamp Replacement

Scheme 13

Instrument Panel Compartment Lamp Replacement

Scheme 14

Roof Rail Rear Seat Position Reading and Courtesy Lamp Replacement

Scheme 15

Sunshade Illuminated Mirror Lamp Lens Replacement

Scheme 16

Outside Rearview Mirror Turn Signal Lamp Replacement

Scheme 17

Headlamp Replacement

Scheme 18

Headlamp Bulb Replacement

Scheme 19

Headlamp Bulb Access Cover Replacement

Aiming Headlamps (Visual Aim)

Headlamp aim should be checked

1. When a new headlamp capsule is installed.
2. If service or repairs to the front end area have (or may have) disturbed the headlamps or their mounting.
3. Suspension components have been replaced or repaired.

1. The area will consist of a level surface large enough to allow for a vehicle and an additional 7.62 m (25 ft) measured from face of lamps to the front of the aiming screen.
2. The screen will be 1.52 m (5 ft) high x 3.66 m (12 ft) wide with a matte white surface well shaded from extraneous light, and properly adjusted to the floor on which the vehicle stands. Provisions may be made for moving the screen so it can be aligned parallel with the vehicle.
3. The screen shall be provided with a fixed vertical centerline, 2 laterally adjustable vertical tapes, and 1 vertically adjustable horizontal tape.
4. If a regular commercial aiming screen is not available, the screen may consist of a vertical wall having a clear uninterrupted area approximately 1.83 m (6 ft) high and 3.66 m (12 ft) wide. The surface should be finished with a washable non-gloss white paint.
5. After the aiming screen has been set up in its permanent location, it is necessary to paint a reference line on the floor (9) directly under the lens of the lamps to indicate the proper location of the headlamps when they are being aimed: Distance between headlamps (1) Center line of screen (2) Adjustable vertical pointer (3) Adjustable horizontal tape (4) Diagram of light screen (5) Vertical center line ahead of right headlamp pointer position (6) 7.62 m (25 ft) (7) Car centerline axis (8)

Prior to aiming the headlamps, the following steps must be taken

1. Remove any snow, ice or mud from the vehicle.
2. The vehicle must have a full tank of gas.
3. Stop all other work on the vehicle.
4. If any service has been performed on the vehicle, make sure that all of the components are back in their original place.
5. The vehicle must be on a level surface.
6. The vehicle left tires must be aligned with the reference line extending from the screen with the headlamps aligned with the vertical reference line (2).
7. Do not load any cargo in the vehicle.
8. The vehicle must contain 1 person or 72.56 kg (160 lb) on the driver's seat.
9. Inflate the tires to the proper pressure.
10. Simulate the vehicle loads if the intended use of the vehicle is for hauling heavy loads or towing a trailer.
11. Rock the vehicle in order to stabilize the suspension.
12. Turn ON the headlamps to low beam and observe the left and the top edges of the high intensity zone on the screen. The edges of the high intensity zone should fall within the specifications.

Headlamp Aiming Procedure

1. Open the hood.
2. Measure from the floor to the center of the headlamp bulb, some headlamps have an aim dot marked on the headlamp lens.
3. At the screen, measure from the floor and place the horizontal tape at the measured distance.
4. Measure from the reference line on the floor to the left headlamp bulb centerline.
5. At the screen, measure from the reference line and place the vertical tape at the measured distance.
6. Measure from the reference line on the floor to the right headlamp bulb centerline.
7. At the screen, measure from the reference line and place the vertical tape at the measured distance.
8. Turn on the low beam headlamps and block the light from projecting onto the screen from the passenger side headlamp.
9. Adjust the vertical aim of the headlamps to the specifications required by the state and the local authorities, or as shown in step number 8.
10. Rotate the headlamp adjuster to change the vertical aim of the headlamp.
11. Repeat the aiming procedure for the passenger side headlamp while blocking the light from projecting onto the screen from the driver side headlamp.
12. Close the hood.

Scheme 20

Headlamp Aim and Brightness Actuator Control Module Replacement

Scheme 21

Headlamp Control Module Replacement

Scheme 22

Daytime Running Lamp Replacement

Scheme 23

Front Side Marker Lamp Replacement

Scheme 24

Auxiliary Side Front Turn Signal Lamp Bulb Replacement

Scheme 25

High Mount Stop Lamp Replacement

Scheme 26

Cargo Center Courtesy Lamp Bulb Replacement

Scheme 27

Backup Lamp Replacement

Scheme 28

Rear License Plate Lamp Replacement

Scheme 29

Rear License Plate Lamp Bulb Replacement

Scheme 30

Tail Lamp Replacement

Scheme 31

Rear Compartment Courtesy Lamp Replacement

See also:
• Instrument Panel Lower Trim Panel Insulator Replacement (Left Side)
• Fastener Caution
• Instrument Panel Center Air Outlet Replacement - Right Side
• Front Side Door Trim Replacement
• Headlining Trim Panel Replacement (With Sunroof)
• Outside Rearview Mirror Housing Lower Cover Replacement
• Front Bumper Fascia Replacement
• Front Wheelhouse Liner Replacement
• Rear Compartment Side Trim Replacement - Right Side (Except AM9)
• Control Module References
• Lifting and Jacking the Vehicle
• Quarter Panel Tail Lamp Upper Molding Replacement
• Brake Pedal Position Sensor Calibration
• Center Reading and Courtesy Lamp Replacement