Lighting and Signalling Systems: Other Saab 9-4X I

Exterior lamps

The exterior lighting system consist of the following lamps

1. Automatic headlamp leveling
2. Headlamps
3. Adaptive forward lighting
4. Daytime running lamps (DRL)
5. Front fog lamps
6. Rear fog lamps
7. Park, tail, license and marker lamps
8. Turn signal lamps
9. Hazard warning lamps
10. Repeater lamps
11. Stop lamps
12. Backup lamps
13. Position lamps

Low Beam Headlamps (Standard) RPO TT4

The headlamps consist of 2 interchangeable single filament bulbs or 2 high intensity discharge (HID) arc tubes and ballast on each side of the vehicle which provide high and low beams. The lower bulb in the headlamp is the high beam and the upper bulb is the low beam.

The headlamps may be turned ON in 3 different ways

1. When the headlamp switch is placed in the ON position, for normal operation
2. When the headlamp switch is placed in the AUTOMATIC LIGHT position, for automatic lamp control
3. When the headlamp switch is placed in the AUTOMATIC LIGHT position, with the windshield wipers ON in daylight conditions, after a 6 s delay

The body control module (BCM) controls the headlamps based on the inputs explained above. When a low beam request is received, the BCM supplies B+ to both low beam headlamps, illuminating the low beam headlamps.

When a high beam request is received, the BCM grounds the headlamp high beam relay control circuit. This energizes the coil in the headlamp high beam relay, causing the relay switch to close. This then applies B+ to both high beam headlamps through the left high beam and right high beam fuses, illuminating the high beam headlamps.

High Intensity Discharge (HID) Low Beam Headlamps (up level) RPO TT6

The BCM controls the headlamps based on the inputs explained above. When a low beam request is received, the BCM grounds the headlamp low beam relay control circuit. This energizes the coil in the headlamp low beam relay, causing the relay switch to close. This then applies B+ to both low beam HID headlamps through the left low beam and right low beam fuses, illuminating the low beam headlamps. When a high beam request is received, the BCM grounds the headlamp high beam relay control circuit. This energizes the coil in the high beam relay, causing the relay switch to close. This then applies B+ to both low beam HID headlamps through the left high beam and right high beam fuses which results in lifting the shutter of both headlamps. This causes the Xenon lamp to illuminate the headlamp at full brightness.

Run Up Of The Lamp

Each ballast requires higher amperage in order to ensure normal startup and run up of the lamp. Run up is the term used to describe the extra power level given to the bulb. The input current during the steady state operation is lower that the start up amperage. After the lamp receives the strike from the starter and the arc is established, the ballast uses its operating voltage in order to provide the run up power needed in order to keep the lamp ON. The lamp rapidly increases in intensity from a dim glow to a very high-intensity, bright light called a steady state. Within a few seconds of the arc being established in the bulb, the majority of steady state is complete. 100 percent of the steady state is completed shortly there after. A high watt power level is necessary in order to bring the lamp to a steady state in such a short period of time. The high watt power level allows the lamp to meet the SAE light vs. time specification.

When To Change The HID Bulb

An inoperative bulb, end of life occurs when the bulb gets old and becomes unstable. The bulb may begin shutting itself OFF sporadically and unpredictably at first, perhaps only once during a 24 h period. When the bulb begins shutting itself off occasionally, the ballast will automatically turn the bulb back ON again within 0.5 s. The ballast will restrike the bulb so quickly that the bulb may not appear to have shut off. As the bulb ages, the bulb may begin to shut off more frequently, eventually over 30 times per minute. When the bulb begins to shut off more frequently, the ballast receives an extreme amount of repetitive current input. Repetitive and extreme amount restarts or restrikes, without time for the ballast to cool down, will permanently damage the ballast. As a safeguard, when repetitive restrikes are detected, the ballast will not attempt to restrike the lamp. The ballast then shuts down and the bulb goes out.

The following symptoms are noticeable signs of an inoperative bulb

1. Flickering light, caused in the early stages of an inoperative bulb
2. Lights go out, caused when the ballast detects, repetitive bulb restrike
3. Color change - The lamp may change to a dim pink glow.

Input power to the ballast must be terminated in order to reset the ballasts fault circuitry. In order to terminate the input power to the ballast, turn the lights OFF and back ON again. Turning the lights OFF and back ON again resets all of the fault circuitry within the ballast until the next occurrence of an extreme amount of repetitive bulb restrike. When an extreme amount of repetitive bulb restrikes occur, replace the starter/arc tube assembly. The ballast will begin the start-up process when the starter/arc tube assembly is replaced. Repeatedly resetting the input power can overheat the internal components and cause permanent damage to the ballast. Allow a few minutes of cool-down time in between reset attempts.

Inoperative bulbs are often sporadic at first, and difficult to repeat. Inoperative bulbs can be identified by observing if the condition gets progressively worse over the next 100 h of operation.

Light Color

White light has a different color rating than regular headlamps. The range of white light that is acceptable is broad when compared to halogens. Therefore, some variation in headlight coloring between the right and left headlamp will be normal. One HID at the end of the normal range may appear considerably different in color from one at the other end of the range. Difference in color is normal. Replace the arc tube only if the arc tube is determined to be at the bulb inoperative stage.

Adaptive Forward Lighting (AFL)

On vehicles equipped with AFL, the headlamps can turn left and right to improve visibility during turns. In order for the AFL system to function, the following conditions must be met

1. Ignition ON
2. Gear selection in DRIVE
3. Headlamp switch in AUTO position
4. The ambient light sensor indicating Night
5. Vehicle speed greater than 3 km/h (2 MPH)
6. The steering wheel is turned greater than 10 degrees to the right or left
7. Not immediately operable after starting the vehicle; driving a short distance is required to calibrate the AFL

If turning right, the right headlamp turns a maximum of 15 degrees and the left headlamp a maximum 5 degrees. If turning left, the left headlamp turns a maximum of 15 degrees and the right headlamp a maximum of 5 degrees.

Demo mode can be activated by turning the ignition ON during the following conditions

1. Gear selection in PARK
2. Headlamp switch in AUTO position
3. The ambient light sensor indicating Night

When the ignition is turned ON during these conditions, the headlamps will cycle outboard and then back to center once. The AFL system is self-contained within the right and left headlamp assemblies. The right headlamp assembly contains the control module that drives the AFL motor for the right and left headlamps via serial data. Both right and left headlamps have no serviceable components with the exception of the headlamp ballast and bulb assemblies.

The AFL consist of the following components

1. Headlamp control module
2. Headlamp actuator - left
3. Headlamp actuator - right

Dynamic Curve Light

Bend lighting is a function depending on the following signal input values

1. Steering angle
2. Vehicle speed
3. Yaw Rate

The appropriate swivel angle is calculated based on vehicle speed and the steering angle value.

Cornering Light

The cornering lamp is activated automatically at vehicle speeds below 40 km/h (25 MPH) when the direction indicator is switched ON and/or when the steering angle is changed from the straight-ahead position towards the side the vehicle is going to turn and passes a programmable angle threshold. The cornering lamp is deactivated automatically when the direction indicator is switched OFF and/or the steering angle has returned in the straight ahead position. The cornering lamps are deactivated at vehicle speeds above 40 km/h (25 MPH). If reverse gear is active, the cornering lamps go into park function. Both lamps will be switched on. They will switch off 20 s after leaving reverse gear or if the vehicle speed exceeds 7 km/h (4 MPH). The cornering lamps also provide a protection against overheating. When having been continuously switched on for 2 min, adaptive forward lighting will deactivate the lamps for 2 min to enable cooling down.

Town Light

Town Light is activated while the vehicle speed is below 55 km/h (34 MPH) as well as the light sensor detects street lights and the town road category is detected. The light distribution is reduced to an area near the car due to low speeds.

Motorway Light

If vehicle speed is above 100 km/h (62 MPH) for at least 20 s (or once above 126 km/h (78 MPH)) and the corresponding road category is identified, the headlamps will be switched to a motorway light distribution. During motorway light the light output of the HID bulb is increased to 38 W by electrical power management. This improves the visibility range at the far end of the road.

Country Light

Country light replaces the current low beam and will be controlled based on programmable vehicle thresholds as well as corresponding road detection. The vehicle speed has to be between 55 km/h (34 MPH) and 100 km/h (62 MPH). Country light is the default light distribution at 35 W. Light distribution is reduced on the left side to prevent oncoming traffic from being dazzled.

Tourist Mode

The tourist mode functionality switches the adaptive forward lighting headlamps into a non dazzling mode, if the traffic regulation moves from left hand traffic to right hand traffic and vice versa. The functionality is switched on/off with the same stalk switch combination. The "flash to pass" stalk needs to be activated while ignition is switched on (system power mode = RUN). The "flash to pass" stalk remains activated until the warning indicator within the instrument panel cluster starts flashing (4 s) and an acoustic indication is sent. The activation period takes about 3 s. An activation flag must be set within the adaptive forward lighting ECM and stored in non-volatile memory. Each time the ignition is switched on and the tourist mode is active, the warning indicator is flashing about 4 s. The tourist mode is deactivated with the same procedure described above. The function is switched OFF, if an acoustic signal is sent (Warning indicator remains inactive).

Adverse Weather Light

Adverse weather light will be switched on while the vehicle speed is below 100 km/h (62 mph) and the windscreen wipers are activated. The HID bulbs will be powered with different values

1. left: 32 W
2. right: 38 W

The main advantage is that reflections on the wet floor are reduced to a minimum. This is noticeable as well for oncoming traffic as for the driver. In front of the car a less illuminated area is realized.

The following conditions must be met before the adaptive forward lighting will operate

1. Headlamp switch in the AUTO position and high or low beam headlamps must be active
2. Steering angle position must be received from the EBCM with the steering signal validity bit set
3. Vehicle speed must be received from the ECM with the steering signal validity bit set
4. Transmission gear position must be received from the TCM with the transmission gear position validity bit set

Automatic Lamp Control

Automatic Light is switched ON as default. It can be switched OFF by turning the light switch to OFF position. It will be switched ON again by doing so again. Automatic Light is only available if a rain sensor or rain/light sensor module in installed in the car. The rain/light sensor module will send the actual ambient light state (day/night) to the BCM. If Automatic Light is enabled, BCM will react on the message received from the rain/light sensor module by switching ON/OFF low beams.

Flash to Pass (Standard) RPO TT4

When the low beam headlamps are on and the turn signal/multifunction switch is momentarily placed in the flash to pass position, ground is applied to the turn signal/multifunction switch. The turn signal/multifunction switch applies ground to the BCM through the flash to pass switch signal circuit. The BCM then applies ground to the high beam relay control circuit. This energizes the high beam relay, closing the switch side contacts of the high beam relay, applying battery voltage to the left and right high beam fuses. Battery voltage is applied from the high beam fuses through the high beam voltage supply circuit to the high beam headlamp assemblies. This causes the high beam headlamps to illuminate at full brightness momentarily or until the flash to pass switch is released.

Flash to Pass (up level) RPO TT6

When the low beam headlamps are on and the turn signal/multifunction switch is momentarily placed in the flash to pass position, ground is applied to the turn signal/multifunction switch. The turn signal/multifunction switch applies ground to the BCM through the flash to pass switch signal circuit. The BCM then sends a message to the headlamp control module to lift the light distribution shield from the xenon lamp. This causes the Xenon lamp to illuminate the headlamp at full brightness momentarily or until the flash to pass switch is released.

Automatic Headlamp Leveling

The Automatic Headlamp Leveling Systems consist of the following components

1. Ballast module - left
2. Ballast module - right
3. Headlamp leveling actuator - left
4. Headlamp leveling actuator - right
5. Headlamp control module
6. Headlamp leveling sensor - front
7. Headlamp leveling sensor - rear

The automatic headlamp leveling system automatically maintains the vertical alignment of the headlamps when the vehicle load and driving conditions change. The headlamp control module receives inputs from the front and rear headlamp leveling sensors to determine vehicle pitch. The headlamp leveling sensors send an output to the headlamp control module as the vehicle suspension compresses and rebounds. The headlamp control module calculates the difference in vehicle pitch and sends a command to the (HID) ballast. The ballast then drive the headlamp leveling actuators to the position commanded by the headlamp control module. The headlamp leveling system also monitors the performance of the HID bulb and ballast. When the headlamp switch is placed in the ON position the headlamps will go down, and then back up to the center position.

Daytime Running Lamps (DRL) without HID RPO TT4

The DRL bulbs are combined with the park lamps. One filament is for the DRL and one for the park lamps. The DRL will operate when the following conditions are met

1. Engine is running.
2. Headlamp switch in AUTOMATIC LIGHT position.
3. The high and low beam headlamps are OFF.

By turning the headlamp switch in the OFF position the automatic light function and the DRL will be deactivated.

The ambient light sensor is used to monitor outside lighting conditions. The ambient light sensor provides a voltage signal that will vary between 0.2-4.9 V depending on outside lighting conditions. The HVAC control module provides a low reference ground and 5 V reference signals to the ambient light sensor. The BCM monitors the ambient light sensor signal circuit to determine if outside lighting conditions are correct for either DRL or low beam when the headlamp switch is in the AUTOMATIC LIGHT position. In daylight conditions, the BCM will command the DRL ON by applying ground to the left and right DRL relays via separate left and right DRL relay control circuits. When the BCM applies ground to the relay control circuits, the left and right DRL relay coils energize causing both relay switch contacts to close. With the left and right DRL relay switch contacts closed, battery voltage flows to the left and right DRL lamps. Any function or condition that turns on the headlamps will cancel DRL operation.

Daytime Running Lamps (DRL) with HID RPO TT6

The DRL are LEDs which are continuously illuminated when

1. Ignition is switched ON.
2. Engine is running.
3. High and low beam headlamps are ON or OFF.
4. Headlamp switch is in PARKING LIGHT, AUTOMATIC LIGHT or LOW BEAM position.

By turning the headlamp switch in the OFF position the automatic light function and the DRL will be deactivated.

The ambient light sensor is used to monitor outside lighting conditions. The ambient light sensor provides a voltage signal that will vary between 0.2-4.9 V depending on outside lighting conditions. The HVAC control module provides a low reference ground and 5 V reference to the ambient light sensor. The BCM monitors the ambient light sensor signal circuit to determine if outside lighting conditions are correct for only DRL or DRL and low beam when the headlamp switch is in the AUTOMATIC LIGHT position. In daylight conditions the BCM will command the DRL ON.

Front Fog Lamps

The front fog lamp relay is supplied with battery voltage at all times. The front fog lamp switch signal circuit is grounded momentarily by pressing the front fog lamp switch. The body control module (BCM) energizes the front fog lamp relay by applying ground to the front fog lamp relay control circuit. When the front fog lamp relay is energized, the relay switch contacts close and battery voltage is applied through the front fog lamp fuse to the front fog lamp supply voltage circuit which illuminates the front fog lamps.

Rear Fog Lamps

When the rear fog lamp switch is placed in the ON position, battery voltage is applied from the BCM to the rear fog lamps. Ground for the rear fog lamps is applied at all times.

The BCM will send a message via GMLAN serial data to the instrument panel cluster to enable the rear fog lamp indicator.

Park, Tail, License and Marker Lamps

The park lamps, tail lamps/LEDs and number plate lights are turned ON when the headlamp switch is placed in the Parking lights or Low beam position or anytime the headlights are requested. When the BCM receives a request from the headlamp switch to turn ON the park lamps the BCM a sends out a PWM signal, which illuminates the park lamps, tail lamps and number plate lights.

Turn Signal Lamps

Ground is applied at all times to the turn signal/multifunction switch. The turn signal lamps may only be activated with the ignition switch in the ON or START position. When the turn signal/multifunction switch is placed in either the TURN RIGHT or TURN LEFT position, ground is applied to the BCM through either the right turn or left turn signal switch signal circuit. The BCM then applies a pulsating voltage to the front and rear turn signal lamps through there respective voltage supply circuits. When a turn signal request is received by the BCM, a serial data message is sent to the instrument cluster requesting the respective turn signal indicator be pulsed ON and OFF.

Repeater Lamps

The repeater lamps are located in the front fender. The repeater lamps are used as additional turn signal lamps, and operate as described in the Turn Signal/Hazard Flasher Lamps description.

Hazard Flasher Lamps

The hazard flashers may be activated in any power mode. The hazard switch is permanently grounded. When the hazard switch is placed in the ON position, ground is applied through the hazard switch signal circuit to the BCM. The BCM supplies battery voltage to all turn signal lamps in an ON and OFF duty cycle. When the hazard switch is activated, the BCM sends a serial data message to the instrument cluster requesting both turn signal indicators to be cycled ON and OFF.

Stop lamps

The brake pedal position (BPP) sensor is used to sense the action of the driver application of the brake pedal. The BPP sensor provides an analog voltage signal that will increase as the brake pedal is applied. The BCM provides a low reference signal and a 5 V reference voltage to the BPP sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied, the BCM will apply battery voltage to the stop lamp control circuit and center high mounted stop lamp control circuit. When the control circuit is energized the stop lamps are illuminated.

Backup Lamps

When the transmission is placed in the reverse position, the engine control module (ECM) sends a serial data message to the BCM. The message indicates that the gear selector is in the reverse position. The BCM applies battery voltage to the backup lamps. The backup lamps are permanently grounded. Once the driver moves the gear selector out of the reverse position, a message is sent by the ECM via serial data requesting the BCM to remove battery voltage from the backup lamp control circuit.

Battery Run Down Protection/Inadvertent Power

To provide battery run down protection, the exterior lamps will be deactivated automatically under certain conditions. The BCM monitors the state of the headlamp switch. If the park or headlamp switch is ON when the ignition switch is placed in either the CRANK or RUN position and then placed in the OFF position, the BCM initiates a 10 min timer. At the end of the 10 min, the BCM will turn OFF the control power output to the park and headlamp relay coils, deactivating the exterior lamps. This feature will be canceled if any power mode other than OFF becomes active. The BCM will disable battery run down protection if any of the following conditions exist. The park or headlamp switch is placed in the ON to OFF position, and back to the ON position during battery run down protection. The BCM determined that the park or headlamp switch was not active when the ignition was turned OFF.

Interior Lamps

The interior lamps consist of 2 groups, those which can dim from the instrument panel cluster lamps dimmer switch and those that can not dim.

Courtesy/Illuminated Entry Lamps

The following lamps may be manually turned ON by placing the interior lamp switch in the ON position, or by opening a door while the switch is in the AUTO position.

1. The dome lamp
2. The liftgate lamps
3. Courtesy lamps

The courtesy lamp supply voltage circuit of the body control module (BCM) supplies battery positive voltage to the dome lamp, the liftgate lamps and courtesy lamps. When any door is opened, the door jamb switch contacts close providing a door open input to the BCM. The BCM then provides a B+ to the interior lamps with the switch in the AUTO position. The interior lamps receive a ground when the switch is in the ON position.

Note. If the liftgate is opened after all the modules go to sleep, the dome light will not come on. The liftgate ajar switch input to the BCM will not wake up the BCM once it has gone to sleep, so the dome light will not come on. Once the BCM gets an input to wake it up, from remote keyless entry or a door handle, the dome light will turn on when the liftgate is opened.

If the driver inadvertently leaves any interior lamp ON, the BCM will turn it OFF after a 20 min time-out.

The courtesy lamps will turn OFF immediately if the ignition switch is turned to the ON position or approximately 20 s after all doors are closed.

Keyless Entry Interior Illumination

When the BCM receives a door unlock command from the remote keyless entry transmitter, the BCM will flash the park lamps several times, illuminate the courtesy and park lamps, and illuminate the low beam headlamps at low intensity. The lamps will remain on until the ignition key is turned from the OFF position, a keyless entry transmitter door lock command is received, or after an approximate 20 s delay.

Interior Lamps Dimming

This group includes lamps which may dim. This group may use a combination of vacuum fluorescent illumination, LEDs and incandescent lamps.

1. HVAC control module, head assembly
2. Rear HVAC control module, head assembly
3. Radio
4. Rear seat audio
5. The instrument panel cluster
6. The PRNDL lamp, with the exception of the current gear select position
7. Power window switches
8. Various switches

When the ignition switch is turned to the ON position, the vacuum fluorescent display, radio, turns ON at maximum brightness. When the park lamps or low beams are ON, all incandescent back lighting turn ON at the dimming level indicated by the instrument panel cluster dimmer switch. At the same time all fluorescent display displays dim to match the indicated dimming level. When the headlamp switch is placed in the PARK or in HEADLAMPS position, the headlamp switch supplies an input signal to the BCM. The BCM then supplies voltage to the instrument panel cluster dimmer switch through the dimming control circuit. The setting of the instrument panel cluster dimmer switch determines the amount of voltage that the instrument panel cluster dimmer switch supplies to the BCM. The BCM then sends a PWM voltage to all the interior lamps. All the fluorescent display and incandescent back lighting lamps are provided a specific voltage.

Note. For vehicles which are equipped with automatic light function, the interior backlighting can only be dimmed when the ambient light sensor detects night conditions.

When the headlight switch is turned to the park lamp or headlamp position, all incandescent back lighting turn ON at the dimming level indicated by the instrument panel cluster dimmer switch. When the instrument panel cluster dimmer switch is moved from minimum to maximum, all fluorescent display displays, as well as all incandescent back lighting respond from minimum intensity to maximum brightness in response to the instrument panel cluster dimmer switch.

Inadvertent Power

The BCM used in this vehicle controls the lighting system through circuits that enable the interior lamps. The BCM opens these enabling circuits shortly after the ignition switch is turned OFF with no lamp switch activity. If the ignition switch is turned to any position other than OFF, or if a lamp switch is activated during this period, the timer will reset itself.

LIGHTING AND SIGNALLING SYSTEMS DTC INDEX

Electrical Information Reference

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Circuit/System Verification

Ignition ON, command the Horn Relay Command ON and OFF with the scan tool. The horn should turn ON and OFF when changing between the commanded states.

Repair Instructions

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

CONTROL MODULE REFERENCES for BCM replacement, programming and setup.

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Observe the function of the E6 center high mounted stop lamp while pressing and releasing the brake pedal. The E6 center high mounted stop lamp should turn ON when the pedal is pressed and OFF when the pedal is released.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

CONTROL MODULE REFERENCES for trailer brake control module replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, vary the interior backlighting from dim to full bright by using the dimmer switch. The interior backlighting should dim and then become full bright.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «RADIO CONTROL ASSEMBLY REPLACEMENT»(ref-652254-S25223049332014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «RELAY REPLACEMENT (ATTACHED TO WIRE HARNESS)»(ref-652238-S26621542932014082300000) or «RELAY REPLACEMENT (WITHIN AN ELECTRICAL CENTER)»(ref-652238-S18364947252014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «FRONT COMPARTMENT FUSE BLOCK REPLACEMENT»(ref-652238-S26207995302014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, command the Rear Fog Lamp(s) Relay ON and OFF with a scan tool. The rear fog lamp should turn ON and OFF when changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «TAIL LAMP REPLACEMENT»(ref-652253-S18021063262014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Engine running, command the Backup Lamps ON and OFF with a scan tool. The E5A backup lamp-left and the E5B backup lamp-right should turn ON and OFF when changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «BACKUP LAMP BULB REPLACEMENT»(ref-652253-S10599945782014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Command the Cargo Lamp ON and OFF with a scan tool. The cargo lamps should turn ON and OFF when changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «REAR COMPARTMENT COURTESY LAMP REPLACEMENT - LIFTGATE»(ref-652253-S37837072952014082300000)
2. «REAR COMPARTMENT COURTESY LAMP REPLACEMENT - QUARTER UPPER TRIM»(ref-652253-S28395882492014082300000)
3. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the function of the E4G headlamp-left low beam and the E4F headlamp-right low beam while commanding the low beam lamps ON and OFF with a scan tool. The E4G headlamp-left low beam and the E4F headlamp-right low beam should turn ON and OFF while changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP REPLACEMENT (T84 T85)»(ref-652253-S24236527172014082300000) or «HEADLAMP REPLACEMENT (TT6 HID)»(ref-652253-S36948340402014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the scan tool Headlamps On Switch, Park Lamps Switch and Automatic Headlamps Disable Switch parameters while selecting the headlamp control switch between the Off, park lamps and headlamps settings. Each parameter should be Inactive and change to Active as each setting is selected.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP SWITCH REPLACEMENT»(ref-652253-S35537835242014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, headlamps ON, vary the interior backlight dimming from low to full bright by using the dimmer switch. The interior backlighting should start dim and then become full bright.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP SWITCH REPLACEMENT»(ref-652253-S35537835242014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the function of the low beam headlamps while commanding the Low Beam Lamps ON and OFF with a scan tool. The E4G headlamp-left low beam and the E4H headlamp-right low beam should turn ON and OFF while changing between the commanded states.

Left Low Beam Inoperative

1. Ignition OFF, disconnect the X118 inline harness connector at the E4G headlamp-left low beam.
2. Connect a test lamp between the control circuit terminal G and ground.
3. Ignition ON, command the Low Beam Lamps ON with a scan tool, the test should illuminate while commanding the headlamp ON.
4. If the test lamp does not illuminate and the circuit fuse is good, test the control circuit for an open/high resistance.
5. If the test lamp does not illuminate and the circuit fuse is open, test the control circuit for a short to ground.
6. If all circuits test normal, replace the E4G headlamp-left low beam.

Right Low Beam Inoperative

1. Ignition OFF, disconnect the X120 inline harness connector at the E4H headlamp-right low beam.
2. Connect a test lamp between the control circuit terminal G and ground.
3. Ignition ON, command the Low Beam Lamps ON with a scan tool, the test should illuminate while commanding the headlamp ON.
4. If the test lamp does not illuminate and the circuit fuse is good, test the control circuit for an open/high resistance.
5. If the test lamp does not illuminate and the circuit fuse is open, test the control circuit for a short to ground.
6. If all circuits test normal, replace the E4H headlamp-right low beam.

Headlamps Malfunction

1. Ignition OFF, disconnect the KR49 headlamp low beam relay.
2. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal 30 and ground.
3. If the test lamp illuminates, test the control circuit for a short to voltage
4. Verify that a test lamp illuminates between the B+ circuit terminal 87 and ground.
5. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
6. Verify that a test lamp illuminates between the B+ circuit terminal 86 and ground.
7. If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
8. Connect a 15A fused jumper wire between the B+ circuit terminal 87 and the control circuit terminal 30. Verify the E4G headlamp-left low beam and the E4H headlamp-right low beam are activated.
9. If the E4G headlamp-left low beam and the E4H headlamp-right low beam do not activate, test the control circuit for a short to ground or an open/high resistance.
10. Connect a test lamp between the B+ circuit terminal 86 and the control circuit terminal 85.
11. Ignition ON, command the low beam lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
12. If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K9 BCM.
13. If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
14. If all circuits test normal, test or replace the KR49 headlamp low beam relay.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP REPLACEMENT (T84 T85)»(ref-652253-S24236527172014082300000) or «HEADLAMP REPLACEMENT (TT6 HID)»(ref-652253-S36948340402014082300000)
2. «RELAY REPLACEMENT (ATTACHED TO WIRE HARNESS)»(ref-652238-S26621542932014082300000) or «RELAY REPLACEMENT (WITHIN AN ELECTRICAL CENTER)»(ref-652238-S18364947252014082300000)
3. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for headlamp control module replacement, setup and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «FRONT COMPARTMENT FUSE BLOCK REPLACEMENT»(ref-652238-S26207995302014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the function of the E2LF side marker lamp-left front, E5E tail lamp-left rear and the E4J park lamp-left front while commanding the Left Park Lamps ON and OFF with a scan tool. The E2LF side marker lamp-left front, E5E tail lamp-left rear and the E4J park lamp-left front should turn ON and OFF while changing between the commanded states
2. If the E2LF side marker lamp-left front, E5E tail lamp-left rear and the E4J park lamp-left front are always ON or always OFF, refer to «LEFT SIDE MARKER/TAIL LAMPS MALFUNCTION»(ref-652253-S34619970202014082300000) .
3. Ignition ON, observe the function of the E2RF side marker lamp-right front, E5F tail lamp-right rear and the E4K park lamp-right front while commanding the Right Park Lamps ON and OFF with a scan tool. The E2RF side marker lamp-right front, E5F tail lamp-right rear and the E4K park lamp-right front should turn ON and OFF while changing between the commanded states
4. If the E2RF side marker lamp-right front, E5F tail lamp-right rear and the E4K park lamp-right front are always ON or always OFF, refer to «RIGHT SIDE MARKER/TAIL LAMPS MALFUNCTION»(ref-652253-S25386877402014082300000) .

Left Side Marker/Tail Lamps Malfunction

1. Disconnect the X1 harness connector at the E5E tail lamp-left.
2. Test for less than 30 ohms between the ground circuit terminal C and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Disconnect the appropriate inline harness connector listed below: X111 inline harness connector (With TT6/TT7/TT8) X115 inline harness connector (Without TT6/TT7/TT8)
5. Test for less than 30 ohms between the ground circuit terminal listed below and ground: Ground circuit terminal A Ground circuit terminal E
6. If greater than the specified range, test the ground circuit for an open/high resistance.
7. Connect a test lamp between the control circuit terminal listed below and ground. E2LF side marker lamp-left front control circuit terminal K E4J park lamp-left front control circuit terminal B E5E tail lamp-left control circuit terminal B
8. Ignition ON, command the Left Park Lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
9. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
10. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the K9 BCM.
11. If all the circuits test normal, replace the appropriate left marker lamp.

Right Side Marker/Tail Lamps Malfunction

1. Disconnect the X1 harness connector at the E5F tail lamp-right.
2. Test for less than 30 ohms between the ground circuit terminal C and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition OFF, disconnect the appropriate inline harness connector listed below: X112 inline harness connector (With TT6/TT7/TT8) X116 inline harness connector (Without TT6/TT7/TT8)
5. Test for less than 30 ohms between the ground circuit terminal listed below and ground: Ground circuit terminal A Ground circuit terminal E
6. If greater than the specified range, test the ground circuit for an open/high resistance.
7. Connect a test lamp between the control circuit terminal listed below and ground. E2RF side marker lamp-right front control circuit terminal K E4K park lamp-right front control circuit terminal B E5F tail lamp-right control circuit terminal A
8. Ignition ON, command the Right Park Lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
9. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
10. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the K9 BCM.
11. If all the circuits test normal, replace the appropriate right marker lamp

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «TAIL LAMP REPLACEMENT»(ref-652253-S18021063262014082300000)
2. «HEADLAMP REPLACEMENT (T84 T85)»(ref-652253-S24236527172014082300000) or «HEADLAMP REPLACEMENT (TT6 HID)»(ref-652253-S36948340402014082300000)
3. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, command the Headlamp Low Beam ON and OFF with a scan tool. The low beam lamp should turn ON and OFF when changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «RELAY REPLACEMENT (ATTACHED TO WIRE HARNESS)»(ref-652238-S26621542932014082300000) or «RELAY REPLACEMENT (WITHIN AN ELECTRICAL CENTER)»(ref-652238-S18364947252014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, command the Left Dedicated Daytime Running Lamp and the Right Dedicated Daytime Running Lamp ON and OFF with a scan tool. The E4C daytime running lamp - left and the E4D daytime running lamp - right should turn ON and OFF while changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «DAYTIME RUNNING LAMP BULB REPLACEMENT (TT6 LEFT SIDE)»(ref-652253-S08501389392014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, switch ON exterior lighting, vary the interior backlight from dim to full bright by using the dimmer switch. The interior backlighting should dim and then become full bright.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP SWITCH REPLACEMENT»(ref-652253-S35537835242014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, command the Left Dedicated Daytime Running Lamp and the Right Dedicated Daytime Running Lamp ON and OFF with a scan tool. The E4C daytime running lamp - left and the E4D daytime running lamp - right should turn ON and OFF while changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP REPLACEMENT (T84 T85)»(ref-652253-S24236527172014082300000) or «HEADLAMP REPLACEMENT (TT6 HID)»(ref-652253-S36948340402014082300000)
2. «RELAY REPLACEMENT (ATTACHED TO WIRE HARNESS)»(ref-652238-S26621542932014082300000) or «RELAY REPLACEMENT (WITHIN AN ELECTRICAL CENTER)»(ref-652238-S18364947252014082300000)
3. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, command the Left Dedicated Daytime Running Lamp and the Right Dedicated Daytime Running Lamp ON and OFF with a scan tool. The E4C daytime running lamp - left and the E4D daytime running lamp - right should turn ON and OFF while changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «DAYTIME RUNNING LAMP BULB REPLACEMENT (TT6 LEFT SIDE)»(ref-652253-S08501389392014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Command the Courtesy Lamps ON and OFF with a scan tool. The courtesy lamps should turn ON and OFF when changing between commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic repair.

1. Refer to the appropriate replacement procedure for the lighting component that requires replacement.
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, park lamps ON, vary the interior backlight dimming from low to full bright by using the dimmer switch. The LED on all components should dim and then become full bright.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. Refer to the appropriate replacement procedure for the component causing the condition.
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the scan tool Ambient Light Sensor parameter. The reading should be between 1.4-4.5 V and change with ambient light changes.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «SUN LOAD TEMPERATURE AND DAYTIME RUNNING LAMP AMBIENT LIGHT SENSOR REPLACEMENT»(ref-652253-S39311782082014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM or HVAC control module replacement, setup and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, command the Accent Lighting ON and OFF with a scan tool. The accent lighting should turn ON and OFF when changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. Refer to the appropriate replacement procedure for the lighting component that requires replacement.
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, command the LED Backlighting ON and OFF with a scan tool. The ignition switch halo lamp should turn ON and OFF when changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «IGNITION AND START SWITCH REPLACEMENT»(ref-652238-S31413843682014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON. Observe the scan tool front fog lamps switch parameter while turning the front fog lamps switch ON and OFF. The parameter should change between Active and Inactive.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP SWITCH REPLACEMENT»(ref-652253-S35537835242014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP LEVELING FRONT SUSPENSION HEIGHT SENSOR REPLACEMENT»(ref-652253-S01374247182014082300000)
2. «HEADLAMP LEVELING REAR SUSPENSION HEIGHT SENSOR REPLACEMENT»(ref-652253-S32278174922014082300000)
3. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for headlamp leveling control module replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP LEVELING FRONT SUSPENSION HEIGHT SENSOR REPLACEMENT»(ref-652253-S01374247182014082300000)
2. «HEADLAMP LEVELING REAR SUSPENSION HEIGHT SENSOR REPLACEMENT»(ref-652253-S32278174922014082300000)
3. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for headlamp leveling control module replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the scan tool Rear Fog Lamps Switch parameter. The parameter should change between Active and Inactive each time the rear fog lamp switch is pressed.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP SWITCH REPLACEMENT»(ref-652253-S35537835242014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Observe the function of the right and left turn signal lamps while turning the hazard lamp switch ON and OFF. The right and left turn signal lamps should cycle ON and OFF while the hazard lamp switch is ON and remain OFF when the hazard lamp switch is OFF.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «RADIO CONTROL ASSEMBLY REPLACEMENT»(ref-652254-S25223049332014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the scan tool Front Fog Lamps Switch parameter. The reading should change between Active/Inactive when changing between pressed and released front fog lamp switch button.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP SWITCH REPLACEMENT»(ref-652253-S35537835242014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the scan tool High Beam Select Switch parameter while pulling and releasing the turn signal/multi-function switch. The value should change between Inactive and Active when changing between the selected states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «TURN SIGNAL MULTIFUNCTION SWITCH REPLACEMENT»(ref-652245-S14926072202014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the scan tool Headlamps Flash Switch parameter while pulling and releasing the turn signal/multi-function switch. The value should change between Inactive and Active when changing between the selected states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «TURN SIGNAL MULTIFUNCTION SWITCH REPLACEMENT»(ref-652245-S14926072202014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the function of the E5L stop lamp-left while commanding the Left Brake Lamp ON and OFF with a scan tool. The E5L stop lamp-left should turn ON and OFF while changing between the commanded states
2. Observe the function of the E5R stop lamp-right while commanding the Right Brake Lamp ON and OFF with a scan tool. The E5R stop lamp-right should turn ON and OFF while changing between the commanded states

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «TAIL LAMP REPLACEMENT»(ref-652253-S18021063262014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, command the License Plate Lamps ON and OFF with a scan tool. The license plate lamps should turn ON and OFF when changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «LIFTGATE CENTER APPLIQUE REPLACEMENT»(ref-652246-S27061211482014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, command the E6 center high mounted stop lamp ON and OFF by applying and releasing the brake pedal. The E6 center high mounted stop lamp should turn ON and OFF each time the brake pedal is applied and released.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HIGH MOUNT STOP LAMP REPLACEMENT»(ref-652253-S29672529632014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the function of the left trailer tail lamp and the right trailer tail lamp while commanding the Left Trailer Tail Lamp and the Right Trailer Tail Lamp ON and OFF with a scan tool. The left trailer tail lamp and the right trailer tail lamp should turn ON and OFF while changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

CONTROL MODULE REFERENCES for trailer brake control module replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the function of the left trailer turn signal lamp and the right trailer turn signal lamp while commanding the Left Trailer Turn Signal Lamp and the Right Trailer Turn Signal Lamp ON and OFF with a scan tool. The left trailer turn signal lamp and the right trailer turn signal lamp should turn ON and OFF while changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

CONTROL MODULE REFERENCES for trailer brake control module replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the function of the trailer stop lamps while commanding the Trailer Stop Lamp ON and OFF with a scan tool. The trailer stop lamps should turn ON and OFF while changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

CONTROL MODULE REFERENCES for trailer brake control module replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the function of the trailer tail lamps while commanding the Trailer Park Lamps ON and OFF with a scan tool. The trailer tail lamps should turn ON and OFF while changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «RELAY REPLACEMENT (ATTACHED TO WIRE HARNESS)»(ref-652238-S26621542932014082300000) or «RELAY REPLACEMENT (WITHIN AN ELECTRICAL CENTER)»(ref-652238-S18364947252014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the function of the trailer backup lamps while commanding the Trailer Backup Lamp ON and OFF with a scan tool. The trailer backup lamps should turn ON and OFF while changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

CONTROL MODULE REFERENCES for the trailer brake control module replacement, setup and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, observe the function of the trailer fog lamps while commanding the Trailer Fog Lamp ON and OFF with a scan tool. The trailer fog lamps should turn ON and OFF while changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

CONTROL MODULE REFERENCES for trailer brake control module replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, with the turn signal switch in the left position, observe the function of the E4LF turn signal lamp-left front and the E4Y turn signal repeater lamp-left. Each lamp should flash ON and OFF.
2. With the turn signal switch in the right position, observe the function of the E4RF turn signal lamp-right front and the E4Z turn signal repeater lamp-right. Each lamp should flash ON and OFF.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «FRONT TURN SIGNAL LAMP BULB REPLACEMENT (TT6 RIGHT HAND BULB)»(ref-652253-S23374438852014082300000) or «FRONT TURN SIGNAL LAMP BULB REPLACEMENT (TT6 LEFT HAND BULB)»(ref-652253-S11019193052014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, command the Left Front Turn Signal Lamp ON and OFF with a scan tool. The left front turn signal lamp should turn ON and OFF when changing between the commanded states.
2. If the left front turn signal lamp is always ON or always OFF, refer to «FRONT TURN SIGNAL LAMP MALFUNCTION»(ref-652253-S29271058622014082300000) .
3. Command the Right Font Turn Signal Lamp ON and OFF with a scan tool. The right front turn signal lamp should turn ON and OFF when changing between the commanded states.
4. If the right front turn signal lamp is always ON or always OFF, refer to «FRONT TURN SIGNAL LAMP MALFUNCTION»(ref-652253-S18594658762014082300000) .
5. Command the Left Rear Turn Signal Lamp ON and OFF with a scan tool. The left rear turn signal lamp should turn ON and OFF when changing between the commanded states.
6. If the left rear turn signal lamp is always ON or always OFF, refer to «REAR TURN SIGNAL LAMP MALFUNCTION»(ref-652253-S05605140682014082300000) .
7. Command the Right Rear Turn Signal Lamp ON and OFF with a scan tool. The right rear turn signal lamp should turn ON and OFF when changing between the commanded states.
8. If the right rear turn signal lamp is always ON or always OFF, refer to «REAR TURN SIGNAL LAMP MALFUNCTION»(ref-652253-S05605140682014082300000) .

Rear Turn Signal Lamp Malfunction

1. Ignition OFF, disconnect the X2 harness connector at the appropriate E4 turn signal lamp-rear.
2. Test for less than 30 ohms between the ground circuit terminal 1 and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Connect a test lamp between the control circuit terminal 3 and ground.
5. Command the appropriate Rear Turn Signal Lamp ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
6. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
7. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
8. If all the circuits test normal, replace the bulb or E4 turn signal lamp-rear.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «REAR TURN SIGNAL LAMP BULB REPLACEMENT»(ref-652253-S36541999272014082300000)
2. «FRONT TURN SIGNAL LAMP BULB REPLACEMENT (TT6 RIGHT HAND BULB)»(ref-652253-S23374438852014082300000) or «FRONT TURN SIGNAL LAMP BULB REPLACEMENT (TT6 LEFT HAND BULB)»(ref-652253-S11019193052014082300000)
3. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «BRAKE PEDAL POSITION SENSOR CALIBRATION»(ref-652253-S24781064862014082300000)
2. «BRAKE PEDAL POSITION SENSOR REPLACEMENT»(ref-652253-S00368190012014082300000)
3. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

CONTROL MODULE REFERENCES for BCM replacement, setup, and programming

Symptoms - Horns

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS .

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the scan tool Horn Switch parameter while pressing and releasing the horn pad. The parameter should change from Inactive to Active.
2. If the value does not change, refer to «HORN SWITCH MALFUNCTION»(ref-652253-S10513931612014082300000) .
3. Command the Horn Relay ON and OFF with the scan tool, the P12 horn should turn ON and OFF when changing between the commanded states.
4. If the P12 horn is always ON or always OFF, refer to «HORN MALFUNCTION»(ref-652253-S10201929742014082300000) .
5. If the sound emitted from the P12 horn is not clear and even, refer to «HORN - POOR TONE»(ref-652253-S01278026172014082300000) .

Horn Switch Malfunction

1. Ignition OFF, disconnect the harness connector at the S33 horn switch.
2. Test for less than 5 ohms between the horn switch ground circuit terminal A and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition ON, verify the scan tool Horn Switch parameter is Inactive.
5. If not the specified value, test the signal circuit terminal B for a short to ground. If the circuit tests normal, replace the K9 BCM.
6. Fit a 3 A fused jumper wire between the signal circuit terminal B and ground. Verify that the scan tool Horn Switch parameter is Active.
7. If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
8. If all circuits test normal, test or replace the S33 horn switch.

Horn Malfunction

1. Ignition OFF, disconnect the X2 harness connector at the X50A underhood fuse block.
2. Connect a test lamp between the control circuit terminal 15 and B+.
3. Ignition ON, command the Horn Relay ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
4. If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K9 BCM.
5. If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
6. Ignition OFF, connect the X2 harness connector at the X50A underhood fuse block. Disconnect the harness connector at the P12 horn.
7. Test for less than 5.0 ohms between the ground circuit terminal A and ground
8. If greater than the specified range, test the ground circuit for an open/high resistance.
9. Connect a test lamp between the control circuit terminal B and ground.
10. Command the Horn Relay ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
11. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the X50A underhood fuse block.
12. If the test lamp is always OFF and the circuit fuse is good, test the control circuit for an open/high resistance. If the circuit tests normal, test or replace the X50A underhood fuse block.
13. If the test lamp is always OFF and the circuit fuse is open, test the control circuit for a short to ground. If the circuit tests normal, test or replace the X50A underhood fuse block.
14. If all circuits test normal, test or replace the P12 horn.

Horn - Poor Tone

1. Ignition OFF, disconnect the harness connector at the appropriate P12 horn.
2. Test for less than 1 ohms between the ground circuit terminal A and ground.
3. If greater than the specified range, test the ground circuit for high resistance.
4. Disconnect the X3 harness connector at the X50A underhood fuse block.
5. Test for less than 1 ohms between the control circuit terminal 9 at the X50A underhood fuse block and the control circuit terminal B at the P12 horn.
6. If greater than the specified range, test the control circuit for high resistance.
7. If all circuits test normal, test or replace the P12 horn.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «STEERING WHEEL HORN CONTACT REPLACEMENT»(ref-652253-S28502308052014082300000)
2. «HORN REPLACEMENT»(ref-652253-S20714782272014082300000)
3. «FRONT COMPARTMENT FUSE BLOCK REPLACEMENT»(ref-652238-S26207995302014082300000)
4. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

Symptoms - Lighting

Note. The following steps must be completed before using a symptom table. Perform the DIAGNOSTIC SYSTEM CHECK - VEHICLE before using a symptom table in order to verify that all of the following conditions are true: There are no DTCs set. The control modules can communicate via the serial data link. Review the system description and operation in order to familiarize yourself with the system functions. Refer to the following: EXTERIOR LIGHTING SYSTEMS DESCRIPTION AND OPERATION INTERIOR LIGHTING SYSTEMS DESCRIPTION AND OPERATION

Thoroughly inspect the wiring and connectors. An incomplete inspection of the wiring and connectors may result in misdiagnosis causing part replacement with the reappearance of the malfunction. If an intermittent malfunction exists, refer to TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS .

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP REPLACEMENT (T84 T85)»(ref-652253-S24236527172014082300000) or «HEADLAMP REPLACEMENT (TT6 HID)»(ref-652253-S36948340402014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for headlamp leveling control module replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Engine running, command the Backup Lamps ON and OFF with a scan tool. The E5A backup lamp-left and the E5B backup lamp-right should turn ON and OFF when changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «BACKUP LAMP BULB REPLACEMENT»(ref-652253-S10599945782014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the scan tool Door Ajar Switch parameter while opening and closing each vehicle door. The parameter should change between Inactive and Active.
2. If the parameter does not change between the selected states, refer to «DOOR AJAR INDICATOR MALFUNCTION»(ref-652252-S07488609652014082300000) .
3. Observe the scan tool Rear Closure Ajar Switch parameter while opening and closing the rear liftgate. The parameter should change between Active and Inactive.
4. If the parameter does not change between the selected states, refer to «LIFTGATE AJAR INDICATOR MALFUNCTION (MANUAL LIFTGATE)»(ref-652252-S34382090762014082300000) or «LIFTGATE AJAR INDICATOR MALFUNCTION (POWER LIFTGATE)»(ref-652252-S33956246742014082300000) .
5. Cycle the dome lamp switch while observing the scan tool Interior/Courtesy Lighting Master Switch parameter. The parameter should change between Cancel, ON and Door.
6. If the parameter does not change, refer to «DOME LAMP SWITCH MALFUNCTION»(ref-652253-S00419122362014082300000) .
7. Command the Courtesy Lamps ON and OFF with a scan tool. The courtesy lamps should turn ON and OFF when changing between the commanded states.
8. If the courtesy lamps do not turn ON and OFF when changing between the commanded states, refer to «COURTESY LAMP MALFUNCTION»(ref-652253-S42613888202014082300000) .
9. Command the Courtesy Lamps ON and OFF with a scan tool. The reading lamps should turn ON and OFF while changing between the commanded states.
10. If the reading lamps do not turn ON and OFF when changing between the commanded states, refer to «READING LAMP MALFUNCTION»(ref-652253-S25345777252014082300000) .
11. Command the Cargo Lamp ON and OFF with a scan tool. The cargo lamps should turn ON and OFF when changing between the commanded states.
12. If the cargo lamps do not turn ON and OFF when changing between the commanded states, refer to «CARGO LAMP MALFUNCTION»(ref-652253-S09405794902014082300000) .
13. Turn the sunshade lamp ON and OFF by using the sunshade lamp switch. The sunshade lamp should turn ON and OFF while changing between the selected states.
14. If the sunshade lamp does not turn ON and OFF when changing between the selected states, refer to «SUNSHADE ILLUMINATION MALFUNCTION»(ref-652253-S21828556052014082300000) .
15. Turn the instrument panel compartment lamp ON and OFF by using the instrument panel compartment lamp switch. The instrument panel compartment lamp should turn ON and OFF while changing between the selected states.
16. If the instrument panel compartment lamp does not turn ON and OFF when changing between the selected states, refer to «INSTRUMENT PANEL COMPARTMENT LAMP MALFUNCTION»(ref-652253-S31235080492014082300000) .

Dome Lamp Switch Malfunction

1. Ignition OFF, disconnect the harness connector at the S12 dome lamp switch.
2. Scan tool disconnected, doors CLOSED, interior lamps OFF, test for less than 30 ohms between the ground circuit terminal 1 and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition ON, verify the scan tool Interior/Courtesy Lighting Master Switch parameter is Door.
5. If not the specified value, test the signal circuit terminal 2 for a short to ground. If the circuit tests normal, replace the K9 BCM.
6. Verify the scan tool Interior/Courtesy Lighting Master Switch parameter is Door.
7. If not the specified value, test the signal circuit terminal 3 for a short to ground. If the circuit tests normal, replace the K9 BCM.
8. Connect a 3 A fused jumper wire between the signal circuit terminal 2 and ground. Verify the scan tool Interior/Courtesy Lighting Master Switch parameter is Cancel.
9. If not the specified value, test the signal circuit for a short to B+ or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
10. Connect a 3 A fused jumper wire between the signal circuit terminal 3 and ground. Verify the scan tool Interior/Courtesy Lighting Master Switch parameter is On.
11. If not the specified value, test the signal circuit for a short to B+ or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
12. If all circuits test normal, replace the S12 dome lamp switch.

Courtesy Lamp Malfunction

1. Disconnect the harness connector at the appropriate courtesy lamp.
2. Ignition OFF, scan tool OFF, doors CLOSED, interior lamps OFF, test for less than 5.0 ohms between the ground circuit terminal listed below and ground: Instrument Panel Courtesy Lamp - terminal 2 Door Courtesy Lamp - terminal 2 Overhead Console Courtesy/Reading Lamp - terminal 2 Rear Courtesy/Reading Lamp - terminal B
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Connect a test lamp between the control circuit terminal listed below and ground: Instrument Panel Courtesy Lamp - terminal 1 Door Courtesy Lamp - terminal 1 Overhead Console Courtesy/Reading Lamp - terminal 3 Rear Courtesy/Reading Lamp - terminal C
5. Command the Courtesy Lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
6. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
7. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
8. If all circuits test normal, replace the courtesy lamp.

Reading Lamp Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate reading lamp.
2. Test for less than 5 ohms between the ground circuit terminal listed below and ground. Overhead Console Courtesy/Reading Lamps - terminal 2 Rear Courtesy/Reading Lamps - terminal B
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Verify a test lamp illuminates between the control circuit terminal listed below and ground: Overhead Console Courtesy/Reading Lamps - terminal 1 Rear Courtesy/Reading Lamps - terminal A
5. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
6. If all circuits test normal, test or replace the reading lamp.

Cargo Lamp Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate cargo lamp.
2. Ignition OFF, scan tool OFF, doors CLOSED, interior lamps OFF, test for less than 5.0 ohms between the ground circuit terminal listed below and ground: Cargo Lamp - terminal 2 Liftgate Courtesy Lamp - terminal 2
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Connect a test lamp between the control circuit terminal listed below and ground. The test lamp should turn ON when connected. Cargo Lamp - terminal 1 Liftgate Courtesy Lamp - terminal 1
5. Command the Cargo Lamp ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
6. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
7. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
8. If all circuits test normal, replace the cargo lamp.

Sunshade Illumination Malfunction

1. Ignition OFF, disconnect the harness connector at the A3 sunshade.
2. Test for less than 5 ohms between the ground circuit terminal B and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Verify a test lamp illuminates between the control circuit terminal A and ground.
5. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
6. If all circuits test normal, test or replace the A3 sunshade.

Instrument Panel Compartment Lamp Malfunction

1. Ignition OFF, disconnect the harness connector at the E27 instrument panel compartment lamp.
2. Open the instrument panel compartment.
3. Verify that a test lamp illuminates between B+ and the ground circuit terminal 2.
4. If the test lamp does not illuminate, test the ground circuit for an open/high resistance.
5. Verify a test lamp illuminates between the control circuit terminal 1 and ground.
6. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
7. If all circuits test normal, replace the E27 instrument panel compartment lamp.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. Refer to the appropriate replacement procedure for the lighting component that requires replacement.
2. «DOME AND READING LAMP SWITCH REPLACEMENT»(ref-652253-S20954688942014082300000)
3. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the scan tool Ambient Light Sensor parameter. The reading should be between 1.4-4.5 V and change with ambient light changes.
2. If greater or less than the specified range, refer to «AMBIENT LIGHT SENSOR MALFUNCTION»(ref-652253-S26005532702014082300000) .
3. Observe the scan tool Automatic Headlamp Disable Switch parameter while cycling the headlamp switch between the AUTOMATIC LIGHT and OFF positions. The parameter should cycle between Active and Inactive.
4. If the value does not change, refer to «HEADLAMP SWITCH MALFUNCTION»(ref-652253-S07644233652014082300000) .
5. Observe the scan tool Headlamp ON Switch parameter while cycling the headlamp switch between the AUTOMATIC LIGHT and LOW BEAM ON position. The parameter should cycle between Active and Inactive.
6. If the value does not change, refer to «HEADLAMP SWITCH MALFUNCTION»(ref-652253-S07644233652014082300000) .
7. Command the Left Dedicated Daytime Running Lamp and the Right Dedicated Daytime Running Lamp ON and OFF with a scan tool. The E4C daytime running lamp - left and the E4D daytime running lamp - right should turn ON and OFF while changing between the commanded states.
8. If the E4C daytime running lamp - left and the E4D daytime running lamp - right are always ON or always OFF, refer to «DAYTIME RUNNING LAMP MALFUNCTION»(ref-652253-S14920541452014082300000) .

Ambient Light Sensor Malfunction

1. Ignition OFF, disconnect the harness connector at the B10B Ambient Light/Sunload Sensor.
2. Test for less than 30 ohms between the low reference circuit terminal 6 and ground.
3. If greater than the specified range, test the low reference circuit for a short to voltage, or an open/high resistance. If the circuit tests normal, replace the K33 HVAC Control Module.
4. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 5 and ground.
5. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
6. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
7. If all circuits test normal, replace the B10B Ambient Light/Sunload Sensor.

Headlamp Switch Malfunction

1. Ignition OFF, disconnect the harness connector at the S30 headlamp switch.
2. Ignition OFF, test for less than 30 ohms between the ground circuit terminal 6 and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition ON, verify the scan tool Park Lamps Switch parameter is Inactive.
5. If not the specified value, test the signal circuit terminal 3 for a short to ground. If the circuit tests normal, replace the K9 BCM.
6. Install a 3 A fused jumper wire between the signal circuit terminal 3 and the ground circuit terminal 6. Verify the scan tool Park Lamps Switch is Active.
7. If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
8. Verify the scan tool Headlamps On Switch parameter is Inactive.
9. If not the specified value, test the signal circuit terminal 4 for a short to ground. If the circuit tests normal, replace the K9 BCM.
10. Install a 3 A fused jumper wire between the signal circuit terminal 4 and the ground circuit terminal 6. Verify the scan tool Headlamps On Switch is Active.
11. If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
12. Verify the scan tool Automatic Headlamps Disable Switch parameter is Inactive.
13. If not the specified value, test the signal circuit terminal 5 for a short to ground. If the circuit tests normal, replace the K9 BCM.
14. Install a 3 A fused jumper wire between the signal circuit terminal 5 and the ground circuit terminal 6. Verify the scan tool Automatic Headlamps Disable Switch is Active.
15. If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
16. If all circuits test normal, test or replace the S30 headlamp switch.

Daytime Running Lamp Malfunction

1. Ignition OFF, disconnect the X1 harness connector K9 BCM.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 3 and ground.
3. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. Ignition OFF, connect the X1 harness connector at the K9 BCM
5. Ignition OFF, disconnect the appropriate inline harness connector listed below: E4C daytime running lamp - left X111 inline harness connector E4D daytime running lamp - right X116 inline harness connector
6. Test for less than 30 ohms between the ground circuit terminal listed below and ground: Ground circuit terminal A Ground circuit terminal E
7. If greater than the specified range, test the ground circuit for an open/high resistance.
8. Connect a test lamp between the control circuit terminal G and ground.
9. Command the appropriate Dedicated Daytime Running Lamp ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
10. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
11. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the K9 BCM.
12. If all circuits test normal, replace the daytime running lamp bulb.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «DAYTIME RUNNING LAMP BULB REPLACEMENT (TT6 LEFT SIDE)»(ref-652253-S08501389392014082300000)
2. «HEADLAMP SWITCH REPLACEMENT»(ref-652253-S35537835242014082300000)
3. «SUN LOAD TEMPERATURE AND DAYTIME RUNNING LAMP AMBIENT LIGHT SENSOR REPLACEMENT»(ref-652253-S39311782082014082300000)
4. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000)

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the scan tool Front Fog Lamps Switch parameter. The parameter should change between Active and Inactive each time the front fog lamp switch is pressed.
2. If the value does not change, refer to «FRONT FOG LAMP SWITCH MALFUNCTION»(ref-652253-S04999192352014082300000) .
3. Command the Fog Lamps ON and OFF with a scan tool. The front fog lamps should turn ON and OFF when changing between the commanded states.
4. If the front fog lamps are always ON or always OFF, refer to «FRONT FOG LAMPS MALFUNCTION»(ref-652253-S37403836012014082300000) .

Front Fog Lamp Switch Malfunction

1. Ignition OFF, disconnect the harness connector at the S30 headlamp switch.
2. Ignition ON, test for B+ between the B+ reference circuit terminal 1 and ground.
3. If less than the specified range, test the B+ reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
4. Connect a 3A fused jumper wire between the B+ reference circuit terminal 1 and the signal circuit terminal 12. Verify the scan tool Front Fog Lamps Switch parameter is Active.
5. If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9™BCM
6. If all circuits test normal, replace the S30 headlamp switch.

Front Fog Lamps Malfunction

1. Ignition OFF, disconnect the X2 harness connector at the X50A underhood fuse block.
2. Connect a test lamp between B+ and the control circuit terminal 17.
3. Ignition ON, command the Fog Lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
4. If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K9 BCM.
5. If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
6. Ignition OFF, connect the X2 harness connector at the X50A underhood fuse block.
7. Disconnect the harness connector at the appropriate E29 fog lamp-front.
8. Test for less than 30 ohms between the ground circuit terminal B and ground.
9. If greater than the specified range, test the ground circuit for an open/high resistance.
10. Connect a test lamp between the control circuit terminal A and ground.
11. Ignition ON, command the Fog Lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
12. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the X50A underhood fuse block.
13. If the test lamp is always OFF and the circuit fuse is good, test the control circuit for an open/high resistance. If the circuit tests normal, replace the X50A underhood fuse block.
14. If the test lamp is always OFF and the circuit fuse is open, test the control circuit for a short to ground. If the circuit tests normal, replace the E29 fog lamp-front.
15. If all circuits test normal, replace the E29 fog lamp-front.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «FRONT FOG LAMP REPLACEMENT»(ref-652253-S19424158492014082300000)
2. «FRONT COMPARTMENT FUSE BLOCK REPLACEMENT»(ref-652238-S26207995302014082300000)
3. «HEADLAMP SWITCH REPLACEMENT»(ref-652253-S35537835242014082300000)
4. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the scan tool Rear Fog Lamps Switch parameter. The parameter should change between Active and Inactive each time the rear fog lamp switch is pressed.
2. If the value does not change, refer to «REAR FOG LAMP SWITCH MALFUNCTION»(ref-652253-S30075618632014082300000)
3. Command the Rear Fog Lamp(s) Relay ON and OFF with a scan tool. The rear fog lamp should turn ON and OFF when changing between the commanded states
4. If the rear fog lamps are always ON or always OFF, refer to «REAR FOG LAMP MALFUNCTION»(ref-652253-S03381831842014082300000)

Rear Fog Lamp Switch Malfunction

1. Ignition OFF, disconnect the harness connector at the S30 headlamp switch.
2. Ignition OFF, test for 0.4K ohms to 1 ohms between the signal circuit terminal 12 and ground.
3. If greater than the specified value, test the low reference circuit for an short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
4. If less than the specified range, test the signal circuit for a short to ground. If the circuit tests normal, replace the K9 BCM.
5. Test for greater than 10 V between the 12 V reference circuit terminal 1 and ground.
6. If less than the specified range, test the 12V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
7. If all circuits test normal, replace the K9 BCM.

Rear Fog Lamp Malfunction

1. Ignition OFF, disconnect the harness connector at the E5 fog lamp-rear.
2. Test for less than 30 ohms between the ground circuit terminal C and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Connect a test lamp between the control circuit terminal A and ground.
5. Ignition ON, command the Rear Fog Lamp(s) Relay ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
6. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
7. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
8. If all circuits test normal, replace the E5 fog lamp-rear.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «TAIL LAMP REPLACEMENT»(ref-652253-S18021063262014082300000)
2. «HEADLAMP SWITCH REPLACEMENT»(ref-652253-S35537835242014082300000)
3. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup.

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Observe the function of the right and left turn signal lamps while turning the hazard lamp switch ON and OFF. The right and left turn signal lamps should cycle ON and OFF while the hazard lamp switch is ON and remain OFF when the hazard lamp switch is OFF.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «RADIO CONTROL ASSEMBLY REPLACEMENT»(ref-652254-S25223049332014082300000)
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, command the Headlamp Low Beam ON and OFF with a scan tool. The E4G headlamp-left low beam and the E4H headlamp-right low beam should turn ON and OFF when changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP REPLACEMENT (T84 T85)»(ref-652253-S24236527172014082300000) or «HEADLAMP REPLACEMENT (TT6 HID)»(ref-652253-S36948340402014082300000)
2. «HEADLAMP BALLAST REPLACEMENT»(ref-652253-S21756184012014082300000)
3. «HEADLAMP CAPSULE REPLACEMENT»(ref-652253-S32372365762014082300000)
4. «RELAY REPLACEMENT (ATTACHED TO WIRE HARNESS)»(ref-652238-S26621542932014082300000) or «RELAY REPLACEMENT (WITHIN AN ELECTRICAL CENTER)»(ref-652238-S18364947252014082300000)
5. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the scan tool Ambient Light Sensor parameter. The reading should be between 1.4-4.5 V and change with ambient light changes.
2. If greater or less than the specified range, refer to «AMBIENT LIGHT SENSOR MALFUNCTION»(ref-652253-S26005532702014082300000) .
3. Observe the scan tool Automatic Headlamp Disable Switch parameter while cycling the headlamp switch between the AUTOMATIC LIGHT and OFF positions. The parameter should cycle between Active and Inactive.
4. If the value does not change, refer to «HEADLAMP SWITCH MALFUNCTION»(ref-652253-S07644233652014082300000) .
5. Observe the scan tool Headlamp ON Switch parameter while cycling the headlamp switch between the AUTOMATIC LIGHT and LOW BEAM ON position. The parameter should cycle between Active and Inactive.
6. If the value does not change, refer to «HEADLAMP SWITCH MALFUNCTION»(ref-652253-S07644233652014082300000) .
7. Observe the function of the E4G headlamp-left low beam and the E4F headlamp-right low beam while commanding the low beam lamps ON and OFF with a scan tool. The E4G headlamp-left low beam and the E4F headlamp-right low beam should turn ON and OFF while changing between the commanded states.
8. If the E4G headlamp-left low beam and the E4F headlamp-right low beam are always ON or always OFF, refer to «LOW BEAM HEADLAMP MALFUNCTION»(ref-652253-S19342451402014082300000) .
9. Observe the scan tool High Beam Select Switch parameter while selecting the S78 turn signal/multifunction switch between the high beam position and the low beam position. The value should change between Inactive and Active while selecting between the two positions.
10. If a value does not change between the commanded states, refer to «TURN SIGNAL/MULTIFUNCTION SWITCH MALFUNCTION»(ref-652253-S01104176342014082300000) .
11. Observe the scan tool Headlamps Flash Switch parameter while pulling and releasing the S78 turn signal/multifunction switch. The value should be Inactive and change to Active as the switch is pulled and released
12. If a value does not change between the commanded states, refer to «TURN SIGNAL/MULTIFUNCTION SWITCH MALFUNCTION»(ref-652253-S01104176342014082300000) .
13. Command the High Beams ON and OFF with a scan tool. The E4E headlamp-left high beam and the E4F right high beam should turn ON and OFF when changing between the selected states.
14. If the E4E headlamp-left high beam or the E4F right high beam low beam is always OFF, refer to «HIGH BEAM HEADLAMPS INOPERATIVE»(ref-652253-S20323234542014082300000)
15. If both high beam headlamps are always ON or always OFF, refer to «HIGH BEAM COMMAND MALFUNCTION»(ref-652253-S26738910742014082300000) .

1. Ignition OFF, disconnect the harness connector at the B10B Ambient Light/Sunload Sensor.
2. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 5 and ground.
3. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
4. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
5. If all circuits test normal, replace the B10B Ambient Light/Sunload Sensor.

1. Ignition OFF, disconnect the harness connector at the S30 headlamp switch.
2. Ignition OFF, test for less than 30 ohms between the ground circuit terminal 6 and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition ON, verify the scan tool Park Lamps Switch parameter is Inactive.
5. If not the specified value, test the signal circuit terminal 3 for a short to ground. If the circuit tests normal, replace the K9 BCM.
6. Install a 3 A fused jumper wire between the signal circuit terminal 3 and the ground circuit terminal 6. Verify the scan tool Park Lamps Switch is Active.
7. If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
8. Verify the scan tool Headlamps On Switch parameter is Inactive.
9. If not the specified value, test the signal circuit terminal 4 for a short to ground. If the circuit tests normal, replace the K9 BCM.
10. Install a 3 A fused jumper wire between the signal circuit terminal 4 and the ground circuit terminal 6. Verify the scan tool Headlamps On Switch is Active.
11. If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
12. Verify the scan tool Automatic Headlamps Disable Switch parameter is Inactive.
13. If not the specified value, test the signal circuit terminal 5 for a short to ground. If the circuit tests normal, replace the K9 BCM.
14. Install a 3 A fused jumper wire between the signal circuit terminal 5 and the ground circuit terminal 6. Verify the scan tool Automatic Headlamps Disable Switch is Active.
15. If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
16. If all circuits test normal, test or replace the S30 headlamp switch.

Low Beam Headlamp Malfunction

1. Ignition OFF, disconnect the harness X1 harness connector at the K9 BCM.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal listed below and ground: B+ circuit terminal 3 B+ circuit terminal 4
3. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
4. Ignition OFF, connect the harness X1 harness connector at the K9 BCM.
5. Disconnect the inline harness connector at the appropriate E4 headlamp low beam listed below: E4G headlamp-left low beam X115 inline harness connector E4F headlamp-right low beam X116 inline harness connector
6. Connect a test lamp between the control circuit terminal G and ground.
7. Ignition ON, command the low beam lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF while changing between the commanded states.
8. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
9. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM
10. If all circuits test normal, replace the headlamp bulb or the headlamp.

Turn Signal/Multifunction Switch Malfunction

1. Ignition OFF, disconnect the harness connector at the S78 turn signal/multifunction switch.
2. Ignition OFF, test for less than 30 ohms between the ground circuit terminal 3 and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition ON, verify the scan tool Headlamps Flash Switch parameter is Inactive.
5. If not the specified value, test the signal circuit terminal 4 for a short to ground. If the circuit tests normal, replace the K9 BCM.
6. Install a 3 A fused jumper wire between the signal circuit terminal 4 and ground. Verify the scan tool Headlamps Flash Switch parameter is Active.
7. If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
8. Verify the scan tool High Beam Select Switch parameter is Inactive.
9. If not the specified value, test the signal circuit terminal 2 for a short to ground. If the circuit tests normal, replace the K9 BCM.
10. Install a 3 A fused jumper wire between the signal circuit terminal 2 and ground. Verify the scan tool High Beam Select Switch parameter is Active.
11. If not the specified value, test the signal circuit for a short to voltage or and open/high resistance. If the circuit tests normal, replace the K9 BCM.
12. If all circuits test normal, test or replace the S78 turn signal/multifunction switch.

High Beam Headlamps Inoperative

1. Connect a 10A fused jumper wire between the HI BEAM-LT fuse test point and B+. Verify that the E4E headlamp-left high beam is illuminated.
2. If the E4E headlamp-left high beam does not illuminate, test the control circuit terminal 27 X3 at the X50A fuse block-underhood for a short to ground or an open/high resistance. If the circuit tests normal, replace the E4E headlamp-left high beam.
3. Connect a 10A fused jumper wire between the HI BEAM-RT fuse test point and B+. Verify that the E4F headlamp-right high beam is illuminated.
4. If the E4F headlamp-right high beam does not illuminate, test the control circuit terminal 26 X3 at the X50A fuse block-underhood for a short to ground or an open/high resistance. If the circuit tests normal, replace the E4F headlamp-right high beam.

High Beam Command Malfunction

1. Ignition OFF, disconnect the X5 harness connector at the K9 BCM.
2. Ignition ON, test for greater than 10V between the control circuit terminal 18 and ground.
3. If less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the X50A fuse block-underhood.
4. Connect a 5A fused jumper wire between the control circuit terminal 18 and ground. Verify that the E4E headlamp-left high beam and the E4F right high beam is illuminated.
5. If the E4E headlamp-left high beam and the E4F right high beam is not illuminated, test the control circuit for a short to voltage. If the circuit tests normal, replace the X50A fuse block-underhood.
6. If all circuits test normal, replace the K9 BCM.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP REPLACEMENT (T84 T85)»(ref-652253-S24236527172014082300000) or «HEADLAMP REPLACEMENT (TT6 HID)»(ref-652253-S36948340402014082300000)
2. «HEADLAMP SWITCH REPLACEMENT»(ref-652253-S35537835242014082300000)
3. «SUN LOAD TEMPERATURE AND DAYTIME RUNNING LAMP AMBIENT LIGHT SENSOR REPLACEMENT»(ref-652253-S39311782082014082300000)
4. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000)

1. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
2. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
3. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)
4. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)

Ignition ON, headlamps ON, observe the function of the left and right headlamps while selecting each level position on the headlamp level switch. The left and right headlamps should move as each position is selected.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP REPLACEMENT (T84 T85)»(ref-652253-S24236527172014082300000) «HEADLAMP REPLACEMENT (TT6 HID)»(ref-652253-S36948340402014082300000)
2. «HEADLAMP SWITCH REPLACEMENT»(ref-652253-S35537835242014082300000)

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Headlamp Leveling Sensor Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate B51 headlamp leveling sensor.
2. Test for less than 5 ohms between the low reference circuit terminal 3 and ground.
3. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K28 headlamp leveling control module.
4. Ignition ON, test for 4.8-5.2 V between the 5V reference circuit terminal 1 and ground.
5. If less than the specified range, test the 5V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K28 headlamp leveling control module.
6. If greater than the specified range, test the 5V reference circuit for a short to voltage. If the circuit tests normal, replace the K28 headlamp leveling control module.
7. Verify the appropriate scan tool Leveling Position Sensor parameter is 0 V.
8. If greater than the specified range, test the signal circuit pin 2 for a short to voltage. If the circuit tests normal, replace the K28 headlamp leveling control module.
9. Install a 3 A fused jumper wire between the signal circuit terminal 2 and the 5V reference circuit terminal 1. Verify the appropriate scan tool Leveling Position Sensor parameter is greater than 5 V.
10. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K28 headlamp leveling control module.
11. If all circuits test normal, replace the B51 headlamp leveling sensor.

Headlamp Leveling Actuator Malfunction

1. Ignition OFF, disconnect the inline harness connector listed below: M29L headlamp leveling actuator-left inline harness connector X111 M29R headlamp leveling actuator-right inline harness connector X112
2. Test for less than 30 ohms between the ground circuit terminal A and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Engine running, test for less than 30 ohms between the ground circuit terminal E and ground.
5. If greater than the specified range, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the K28 headlamp leveling control module.
6. Verify that a test lamp illuminates between the control circuit terminal D and ground.
7. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K28 headlamp leveling control module.
8. Test for 4.25 V-5.25 V between the signal circuit terminal M and ground.
9. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K28 headlamp leveling control module.
10. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K28 headlamp leveling control module.
11. If all circuits test normal, test or replace the M29 headlamp leveling actuator

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP REPLACEMENT (T84 T85)»(ref-652253-S24236527172014082300000) or «HEADLAMP REPLACEMENT (TT6 HID)»(ref-652253-S36948340402014082300000)
2. «HEADLAMP LEVELING FRONT SUSPENSION HEIGHT SENSOR REPLACEMENT»(ref-652253-S01374247182014082300000)
3. «HEADLAMP LEVELING REAR SUSPENSION HEIGHT SENSOR REPLACEMENT»(ref-652253-S32278174922014082300000)
4. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for module replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

Ignition ON, command the Accent Lighting ON and OFF with a scan tool. The accent lighting should turn ON and OFF when changing between the commanded states.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. Refer to the appropriate replacement procedure for the lighting component that requires replacement.
2. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the scan tool Indicator Dimming Duty cycle Command parameter while operating the dimmer switch from high to low. The parameter should change between 5-50% when the backlight switch is moved up and down.
2. If the reading does not change, refer to the «DIMMER SWITCH CIRCUIT TEST»(ref-652253-S14690903172014082300000) .
3. Observe the interior backlighting components while commanding the LED Backlight Dimming ON and OFF with the scan tool. The backlighting should turn ON and OFF when changing between the commanded states.
4. If the backlighting does not change between the commanded states, refer to the «INTERIOR BACKLIGHTING CIRCUIT TEST»(ref-652253-S25057452812014082300000) .

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «HEADLAMP SWITCH REPLACEMENT»(ref-652253-S35537835242014082300000)
2. Refer to the appropriate replacement procedure for the lighting component that requires replacement.
3. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, setup, and programming

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the function of the E2LF side marker lamp-left front, E5E tail lamp-left rear and the E4J park lamp-left front while commanding the Left Park Lamps ON and OFF with a scan tool. The E2LF side marker lamp-left front, E5E tail lamp-left rear and the E4J park lamp-left front should turn ON and OFF while changing between the commanded states
2. If the E2LF side marker lamp-left front, E5E tail lamp-left rear and the E4J park lamp-left front are always ON or always OFF, refer to «LEFT SIDE MARKER/TAIL LAMPS MALFUNCTION»(ref-652253-S34619970202014082300000) .
3. Ignition ON, observe the function of the E2RF side marker lamp-right front, E5F tail lamp-right rear and the E4K park lamp-right front while commanding the Right Park Lamps ON and OFF with a scan tool. The E2RF side marker lamp-right front, E5F tail lamp-right rear and the E4K park lamp-right front should turn ON and OFF while changing between the commanded states
4. If the E2RF side marker lamp-right front, E5F tail lamp-right rear and the E4K park lamp-right front are always ON or always OFF, refer to «RIGHT SIDE MARKER/TAIL LAMPS MALFUNCTION»(ref-652253-S25386877402014082300000) .
5. Observe the function of the E7L license plate lamp-left and E7R license plate lamp-right while commanding the license plate lamps ON and OFF with a scan tool. The E7L license plate lamp-left and E7R license plate lamp-right should turn ON and OFF when changing between the commanded states
6. If the E7L license plate lamp-left or E7R license plate lamp-right is always OFF, inspect for a burned out bulb or corrosion of the bulb sockets.
7. If the E7L license plate lamp-left and E7R license plate lamp-right are always OFF or always ON, refer to «LICENSE PLATE LAMP MALFUNCTION»(ref-652253-S31342386512014082300000) .

1. Disconnect the X1 harness connector at the E5E tail lamp-left.
2. Test for less than 30 ohms between the ground circuit terminal C and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Disconnect the appropriate inline harness connector listed below: X111 inline harness connector (With TT6/TT7/TT8) X115 inline harness connector (Without TT6/TT7/TT8)
5. Test for less than 30 ohms between the ground circuit terminal listed below and ground: Ground circuit terminal A Ground circuit terminal E
6. If greater than the specified range, test the ground circuit for an open/high resistance.
7. Connect a test lamp between the control circuit terminal listed below and ground. E2LF side marker lamp-left front control circuit terminal K E4J park lamp-left front control circuit terminal B E5E tail lamp-left control circuit terminal B
8. Ignition ON, command the Left Park Lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
9. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
10. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the K9 BCM.
11. If all the circuits test normal, replace the appropriate left marker lamp.

1. Disconnect the X1 harness connector at the E5F tail lamp-right.
2. Test for less than 30 ohms between the ground circuit terminal C and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition OFF, disconnect the appropriate inline harness connector listed below: X112 inline harness connector (With TT6/TT7/TT8) X116 inline harness connector (Without TT6/TT7/TT8)
5. Test for less than 30 ohms between the ground circuit terminal listed below and ground: Ground circuit terminal A Ground circuit terminal E
6. If greater than the specified range, test the ground circuit for an open/high resistance.
7. Connect a test lamp between the control circuit terminal listed below and ground. E2RF side marker lamp-right front control circuit terminal K E4K park lamp-right front control circuit terminal B E5F tail lamp-right control circuit terminal A
8. Ignition ON, command the Right Park Lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
9. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
10. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the K9 BCM.
11. If all the circuits test normal, replace the appropriate right marker lamp

License Plate Lamp Malfunction

1. Ignition OFF, disconnect the X902 inline harness connector.
2. Test for less than 30 ohms between the ground circuit terminal 15 and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Connect a test lamp between the control circuit terminal 1 and ground.
5. Ignition ON, command the License Plate Lamps ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the selected states.
6. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
7. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
8. If all circuits test normal, test or replace the E7L license plate lamp-left or E7R license plate lamp-right.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «TAIL LAMP REPLACEMENT»(ref-652253-S18021063262014082300000)
2. «FRONT TURN SIGNAL LAMP BULB REPLACEMENT (TT6 RIGHT HAND BULB)»(ref-652253-S23374438852014082300000) or «FRONT TURN SIGNAL LAMP BULB REPLACEMENT (TT6 LEFT HAND BULB)»(ref-652253-S11019193052014082300000)
3. «LIFTGATE CENTER APPLIQUE REPLACEMENT»(ref-652246-S27061211482014082300000)
4. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the scan tool Brake Pedal Position Sensor parameter while applying and releasing the brake pedal. The value should be 0.2 V with the pedal pressed and 0 V with the pedal released.
2. If the value does not change, refer to the «BRAKE PEDAL POSITION SENSOR MALFUNCTION»(ref-652253-S22961450612014082300000) .
3. Observe the function of the E5L stop lamp-left while commanding the Left Brake Lamp ON and OFF with a scan tool. The E5L stop lamp-left should turn ON and OFF while changing between selected states.
4. If the E5L stop lamp-left is always ON or always OFF, refer to «LEFT BRAKE LAMP MALFUNCTION»(ref-652253-S29642506012014082300000) .
5. Observe the function of the E5R stop lamp-right while commanding the Right Brake Lamp ON and OFF with a scan tool. The E5R stop lamp-right should turn ON and OFF while changing between selected states.
6. If the E5R stop lamp-right is always ON or always OFF, refer to «RIGHT BRAKE LAMP MALFUNCTION»(ref-652253-S41026096612014082300000) .
7. Observe function of the E6 center high mounted stop lamp while commanding the Center Brake Lamp ON and OFF with a scan tool. The E6 center high mounted stop lamp should turn ON and OFF when changing between the selected states.
8. If the E6 center high mounted stop lamp is always ON or always OFF, refer to «CENTER HIGH MOUNT STOP LAMP MALFUNCTION»(ref-652253-S39870293062014082300000) .

Brake Pedal Position Sensor Malfunction

1. Ignition OFF, disconnect the harness connector at the B22 brake pedal position sensor.
2. Ignition OFF, test for less than 30 ohms between the low reference circuit terminal C and ground.
3. If greater than the specified range, test the low reference circuit for a short to voltage, or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal A and ground.
5. If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
6. If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
7. Verify that the scan tool Brake Pedal Position Sensor parameter is less than 0.3 V.
8. If greater than the specified range, test the signal circuit pin B for a short to voltage. If the circuit tests normal, replace the BCM K9.
9. Connect a 3 A fused jumper wire between the 5 V reference circuit terminal A and the signal circuit terminal B. Verify that the scan tool Brake Pedal Position Sensor parameter is 4.8-5.2 V
10. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
11. If all circuits test normal, test or replace the B22 brake pedal position sensor.

Left Brake Lamp Malfunction

1. Ignition OFF, disconnect the X1 harness connector at the E5E tail lamp left.
2. Test for less than 30 ohms between the ground circuit terminal C and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Connect a test lamp between the control circuit terminal A and ground.
5. Ignition ON, command the Left Brake Lamp ON and OFF with a scan tool, the test lamp should turn ON and OFF when changing between the commanded states.
6. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
7. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
8. If all circuits test normal, test or replace the E5E tail lamp-left.

Right Brake Lamp Malfunction

1. Ignition OFF, disconnect the X1 harness connector at the E5F tail lamp right.
2. Test for less than 30 ohms between the ground circuit terminal C and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Connect a test lamp between the control circuit terminal A and ground.
5. Ignition ON, command the Right Brake Lamp ON and OFF with a scan tool, the test lamp should turn ON and OFF when changing between the commanded states.
6. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
7. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
8. If all circuits test normal, test or replace the E5F tail lamp-right.

Center High Mount Stop Lamp Malfunction

1. Ignition OFF, disconnect the harness connector at the E6 center high mounted stop lamp.
2. Test for less than 30 ohms between the ground circuit terminal B and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Connect a test lamp between the control circuit terminal A and ground.
5. Ignition ON, command the Center Brake Lamp ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
6. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
7. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
8. If all circuits test normal, replace the E6 center high mounted stop lamp.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «BRAKE PEDAL POSITION SENSOR REPLACEMENT»(ref-652253-S00368190012014082300000)
2. «BRAKE PEDAL POSITION SENSOR CALIBRATION»(ref-652253-S24781064862014082300000)
3. «TAIL LAMP REPLACEMENT»(ref-652253-S18021063262014082300000)
4. «HIGH MOUNT STOP LAMP REPLACEMENT»(ref-652253-S29672529632014082300000)
5. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the function of the left trailer tail lamp and the right trailer tail lamp while commanding the Left Trailer Tail Lamp and the Right Trailer Tail Lamp ON and OFF with a scan tool. The left trailer tail lamp and the right trailer tail lamp should turn ON and OFF while changing between the commanded states.
2. If the left trailer tail lamp or the right trailer tail lamp is always ON or always OFF, refer to «TRAILER LAMPS MALFUNCTION»(ref-652253-S34005135032014082300000) .
3. Observe the function of the left trailer turn signal lamp and the right trailer turn signal lamp while commanding the Left Trailer Turn Signal Lamp and the Right Trailer Turn Signal Lamp ON and OFF with a scan tool. The left trailer turn signal lamp and the right trailer turn signal lamp should turn ON and OFF while changing between the commanded states.
4. If the left trailer turn signal lamp or the right trailer turn signal lamp is always ON or always OFF, refer to «TRAILER LAMPS MALFUNCTION»(ref-652253-S34005135032014082300000) .
5. Observe the function of the trailer fog lamps while commanding the Trailer Fog Lamps ON and OFF with a scan tool. The trailer fog lamps should turn ON and OFF while changing between the commanded states.
6. If the trailer fog lamps are always ON or always OFF, refer to «TRAILER LAMPS MALFUNCTION»(ref-652253-S34005135032014082300000) .
7. Observe the function of the trailer backup lamps while commanding the Trailer Backup Lamps ON and OFF with a scan tool. The trailer backup lamps should turn ON and OFF while changing between the commanded states.
8. If the trailer backup lamps are always ON or always OFF, refer to «TRAILER LAMPS MALFUNCTION»(ref-652253-S34005135032014082300000)
9. Observe the function of the trailer brake lamps while commanding the Trailer Brake Lamps ON and OFF with a scan tool. The trailer stop lamps should turn ON and OFF while changing between the commanded states.
10. If the trailer brake lamps are always ON or always OFF, refer to «TRAILER BRAKE LAMPS MALFUNCTION»(ref-652253-S12426185762014082300000) .
11. If all trailer lamps are inoperative, refer to «Trailer Lamps Malfunction»(ref-652253-S34005135032014082300000) .

Trailer Lamps Malfunction

1. NOTE: Verify that the trailer has been disconnected from the X88 trailer connector. Ignition OFF, disconnect the X1 harness connector at the K67 trailer brake control module.
2. Test for infinite resistance between the control circuit terminal listed below and ground: Right trailer turn signal lamp control terminal 2 Left trailer park lamp control terminal 4 Trailer backup lamp control terminal 7 Trailer fog lamp control terminal 8 Right trailer park lamp control terminal 16 Left trailer turn signal lamp control terminal 17
3. If not the specified value, test the control circuit for a short to ground. If the circuit tests normal, replace the X88 trailer connector.
4. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal listed below and ground: Right trailer turn signal lamp control terminal 2 Left trailer park lamp control terminal 4 Trailer backup lamp control terminal 7 Trailer fog lamp control terminal 8 Right trailer park lamp control terminal 16 Left trailer turn signal lamp control terminal 17
5. If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the X88 trailer connector.
6. Test for less than 1 ohms between the control circuit terminals listed below: Right trailer turn signal lamp control terminal 2 at the K67 trailer brake control module and control terminal 4 at the X88 trailer connector. Left trailer park lamp control terminal 4 at the K67 trailer brake control module and control terminal 7 at the X88 trailer connector. Trailer backup lamp control terminal 7 at the K67 trailer brake control module and control terminal 8 at the X88 trailer connector. Trailer fog lamp control terminal 8 at the K67 trailer brake control module and control terminal 2 at the X88 trailer connector. Right trailer park lamp control terminal 16 at the K67 trailer brake control module and control terminal 5 at the X88 trailer connector. Left trailer turn signal lamp control terminal 17 at the K67 trailer brake control module and control terminal 1 at the X88 trailer connector.
7. If greater than the specified range, test the control circuit for an open/high resistance. If the circuit tests normal, replace the X88 trailer connector.
8. If all circuits test normal, replace the K67 trailer brake control module.

Trailer Brake Lamps Malfunction

1. Ignition OFF, disconnect the X1 harness connector at the K67 trailer brake control module.
2. Connect a test lamp between the signal circuit terminal 14 and ground.
3. Ignition ON, command the Center Brake Lamp ON and OFF with a scan tool. The test lamp should turn ON and OFF while changing between the commanded states.
4. If the test lamp is always ON, test the signal circuit for a short to voltage. If the circuit tests normal, refer to «STOP LAMPS MALFUNCTION»(ref-652253-S09863343192014082300000) .
5. If the test lamp is always OFF, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, refer to «STOP LAMPS MALFUNCTION»(ref-652253-S09863343192014082300000) .
6. Verify that a test lamp does not illuminate between the control circuit terminal 10 and ground.
7. If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the X88 trailer connector.
8. Test for infinite resistance between the control circuit terminal 10 and ground.
9. If not the specified value, test the control circuit for a short to ground. If the circuit tests normal, replace the X88 trailer connector.
10. Test for less than 1 ohms between the control circuit 10 at the K67 trailer brake control module and the control circuit terminal 6 at the X88 trailer connector.
11. If greater than the specified range, test the control circuit for an open/high resistance. If the circuit tests normal, replace the X88 trailer connector.
12. If all circuits test normal, replace the K67 trailer brake control module.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

CONTROL MODULE REFERENCES for trailer brake control module replacement, programming and setup

1. «CIRCUIT TESTING»(ref-652238-S32451086822014082300000)
2. «CONNECTOR REPAIRS»(ref-652238-S24409892572014082300000)
3. «TESTING FOR INTERMITTENT CONDITIONS AND POOR CONNECTIONS»(ref-652238-S35849067632014082300000)
4. «WIRING REPAIRS»(ref-652238-S13433242552014082300000)

1. Ignition ON, observe the scan tool Left Turn Signal Switch parameter while moving the turn signal switch from the center position to the left position. The value should be Inactive and change to Active.
2. If the value does not change, refer to «TURN SIGNAL SWITCH MALFUNCTION»(ref-652253-S32080796972014082300000) .
3. Ignition ON, observe the scan tool Right Turn Signal Switch parameter while moving the turn signal switch from the center position to the right position. The value should be Inactive and change to Active.
4. If the value does not change, refer to «TURN SIGNAL SWITCH MALFUNCTION»(ref-652253-S32080796972014082300000) .
5. Ignition ON, with the turn signal switch in the left position, observe the function of the E4LF turn signal lamp-left front, the E4Y turn signal repeater lamp-left and the E4LR turn signal lamp-left rear. Each lamp should flash ON and OFF.
6. If a lamp is always On or always OFF, refer to «TURN SIGNAL LAMPS MALFUNCTION»(ref-652253-S09208434792014082300000) .
7. Ignition ON, with the turn signal switch in the right position, observe the function of the E4RF turn signal lamp-right front, the E4Z turn signal repeater lamp-right and the E4RR turn signal lamp-right rear. Each lamp should flash ON and OFF.
8. If a lamp is always On or always OFF, refer to «TURN SIGNAL LAMPS MALFUNCTION»(ref-652253-S09208434792014082300000) .
9. Command the All Indicators Test ON and OFF with a scan tool. The left and right turn signal indicators should turn ON and OFF when changing between the commanded states.
10. If the left and right turn signal indicators are always ON or always OFF, replace the P16 instrument cluster.

Turn Signal Switch Malfunction

1. Ignition OFF, disconnect the X2 harness connector at the S78 turn signal/multi-function switch.
2. Test for less than 30 ohms between the ground circuit terminal 3 and ground.
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition ON, verify the scan tool Left Turn Signal Switch parameter is Inactive.
5. If not the specified value, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the K9 BCM.
6. Install a 3 A fused jumper wire between the signal circuit terminal 1 and ground. Verify the scan tool Left Turn Signal Switch parameter is Active.
7. If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
8. Verify the scan tool Right Turn Signal Switch parameter is Inactive.
9. If not the specified value, test the signal circuit terminal 7 for a short to ground. If the circuit tests normal, replace the K9 BCM.
10. Install a 3 A fused jumper wire between the signal circuit terminal 7 and ground. Verify the scan tool Right Turn Signal Switch parameter is Active.
11. If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
12. If all circuits test normal, test or replace the S78 turn signal/multifunction switch.

Turn Signal Lamps Malfunction

1. Ignition OFF, disconnect the harness connector at the appropriate turn signal lamp.
2. Test for less than 30 ohms between the ground circuit terminal listed below and ground. E4Y turn signal repeater lamp-left terminal 2 E4Z turn signal repeater lamp-right terminal 2 E4LR turn signal lamp-left rear terminal 1 E4RR turn signal lamp-right rear terminal 1
3. If greater than the specified range, test the ground circuit for an open/high resistance.
4. Disconnect the inline harness connector at the appropriate E4LF turn signal lamp-front listed below: E4LF turn signal lamp-left front X115 (Without TT6/TT7/TT8) E4LF turn signal lamp-left front X111 (With TT6/TT7/TT8) E4RF turn signal lamp-right front X116 (Without TT6/TT7/TT8) E4RF turn signal lamp-right front X112 (With TT6/TT7/TT8)
5. Connect a test lamp between the control circuit terminal listed below and ground. E4LF turn signal lamp-left front terminal J E4RF turn signal lamp-right front terminal J E4Y turn signal repeater lamp-left terminal 1 E4LR turn signal lamp-left rear terminal 3 E4Z turn signal repeater lamp-right terminal 1 E4RR turn signal lamp-right rear terminal 3
6. Command the appropriate Turn Signal Lamp ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
7. If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
8. If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
9. If all circuits test normal, replace the turn signal lamp.

Perform the DIAGNOSTIC REPAIR VERIFICATION after completing the diagnostic procedure.

1. «TURN SIGNAL MULTIFUNCTION SWITCH REPLACEMENT»(ref-652245-S14926072202014082300000)
2. «FRONT TURN SIGNAL LAMP BULB REPLACEMENT (TT6 RIGHT HAND BULB)»(ref-652253-S23374438852014082300000) or «FRONT TURN SIGNAL LAMP BULB REPLACEMENT (TT6 LEFT HAND BULB)»(ref-652253-S11019193052014082300000)
3. «TAIL LAMP REPLACEMENT»(ref-652253-S18021063262014082300000)
4. «CONTROL MODULE REFERENCES»(ref-652232-S11179918262014082300000) for BCM or instrument cluster replacement, setup and programming

Time studies - Lighting

Correction

1. 01 - Replacement
2. 02 - Removal - Refit
3. 03 - Renovate
4. 04 - Paint
5. 05 - Adjust
6. 06 - Change comp. unit
7. 07 - Lubricate - Clean - Polish
8. 08 - Check/Fault search
9. 09 - Expose
10. 10 - Install new
11. 11 - Transfer

Headlamp Aiming

The vehicle has a visual optical headlamp aiming system. The headlamp aiming system has been preset at the factory.

However, If the vehicle is damaged in an accident, the aim of the headlamps can be affected and adjustment could be necessary.

The vehicle should be properly prepared as follows

1. The vehicle should be placed so the headlamps are 25 ft (7.6 m) from a light colored wall or other flat surface.
2. The vehicle must have all four tires on a perfectly level surface which is level all the way to the wall or other flat surface.
3. The vehicle should be placed so it is perpendicular to the wall or other flat surface.
4. The vehicle should not have any snow, ice or mud on it.
5. The vehicle should be fully assembled and all other work stopped while headlamp aiming is being done.
6. The vehicle should be normally loaded with a full tank of fuel and one person or 160 lbs (75 kg) on the driver seat.
7. Tires should be properly inflated.

Headlamp aiming is done with the vehicle low-beam headlamps. The high-beam headlamps will be correctly aimed if the low-beam headlamps are aimed properly.

Scheme 25

1. To adjust the vertical aim
2. Locate the aim point at the center inner projector condensing lens of the low beam headlamp (not the outer lens).
3. Measure the distance from the ground to the aim dot on the low beam headlamp.
4. Record the distance.
5. At the wall, measure from the ground upward to the recorded distance from step 3 , and draw or tape a horizontal line (3) the width of the vehicle.
6. WARNING: Do not cover a headlamp to improve beam cut-off when aiming. Covering a headlamp may cause excessive heat build-up which may cause damage to the headlamp. Turn on the low-beam headlamps and place a piece of cardboard or equivalent in front of the headlamp not being adjusted. This only allows the beam of light from the headlamp being adjusted to be seen on the flat surface.
7. Locate the vertical aiming screws, which are under the hood near each headlamp assembly.
8. For the vehicle that is equipped with a Base headlamp (halogen bulb), there will be one vertical headlamp aiming screw (V1).
9. The aiming screw (V1) is adjusted from the engine compartment side of the beauty cover.
10. For the vehicle that is equipped with an Up-level headlamp (HID), there will be two vertical headlamp aiming screws (V1 and V2).
11. The aiming screw (V1) is adjusted from the engine compartment side of the beauty cover and the aiming screw (V2) is adjusted through the access hole in the beauty cover.
12. For the Base vehicle, turn the vertical aiming screw (V1) until the headlamp beam is aimed to the horizontal tape line. Turn it clockwise or counter-clockwise to raise or lower the angle of the beam.
13. For the Up-level vehicle, turn the vertical aiming screws (V1 and V2) simultaneously until the headlamp beam is aimed to the horizontal tape line. Turn them clockwise or counter-clockwise to raise or lower the angle of the beam.
14. Make sure that the light from the headlamp is positioned at the bottom edge (1, 2) of the horizontal tape line (3).
15. Repeat steps 7 through 14 for the opposite headlamp.

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Fog Lamp Aiming

1. Turn the hex adjustment screw clockwise in order to raise the aim.
2. Turn the hex adjustment screw counter-clockwise in order to lower the aim.

Scheme 30

1. To ensure accurate vertical front fog lamp aiming, first perform the following steps to prepare the vehicle. Make sure that all the components are in place on the vehicle, the tires are properly inflated, and there is not any mud or snow clinging to the vehicle. Stop all other operations of work on the vehicle. Make sure the fuel level is 1/2 full or more. Jounce the vehicle to settle the suspension. Place the vehicle on a level surface 7.6 m (25 ft) from the target screen. Measure the distance from the floor to the center of the fog lamp. Using this measurement, mark the horizontal centerline of the fog lamp on the target screen directly in front of the vehicle. Start the vehicle in order to level the suspension.
2. Turn the front fog lamps ON.
3. Access the fog lamp vertical adjustment screw through the radiator lower outer grille.
4. Adjust the fog lamp screw up or down until the top edge of the high intensity zone on the screen is 102 mm (4 in) below the horizontal centerline.
5. Turn OFF the front fog lamps.

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