Lighting Systems Cadillac Seville V

Exterior Lamps

The exterior lighting consist of the following lamps

1. The Headlamps
2. The Daytime Running Lamps (DRL)
3. The Fog Lamps
4. The Park, Tail, License and Marker Lamps
5. The Turn Signal/Hazard Lamps, and Repeater Lamps
6. The Stop Lamps
7. The Backup Lamps
8. The Position Lamps
9. The Cornering Lamps
10. The Underhood Lamp

Headlamps

The headlamps may be turned on in three 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 OFF position, and the twilight delay switch is moved out of the OFF position for automatic lamp control (ALC).
3. When the headlamp switch is placed in the OFF position, the twilight delay switch is moved out of the OFF position, and the windshield wipers are ON in daylight conditions, after a six second delay.

During ALC control the headlamps will be in day time running lamp (DRL) operation in daylight conditions, or low beam operation in low light conditions. When all exterior lighting controls are inactive and nighttime conditions are sensed, a HEADLAMPS SUGGESTED message will appear on the driver information center (DIC), after the IPC receives a class 2 message from the DIM. The message will also appear if the wiper activated headlamps feature is off due to the twilight sentinel being off, but the windshield wipers are on. The dash integration module (DIM) provides battery positive voltage to the signal circuits of the headlamp switch. The signal circuits include the Head Lamp Switch input, and the Flash To Pass Switch.

With the headlamp switch in the ON position, the headlamps on signal circuit is grounded through the headlamp switch to G200. In response to this input, the DIM provides ground to the HDLP LO BM relay control circuit. The IPC illuminates the LIGHTS ON indicator when the DIM detects that the headlamps are requested. When the headlamp dimmer switch lever is pushed away from the driver to the HIGH BEAM position, the HDLP HI BM relay has ground through the headlamp dimmer switch. This Illuminates the high beam headlamps in addition to the low beams. The IPC illuminates the high beam indicator when the DIM detects that the high beam headlamps are requested. The DIM supplies battery positive voltage to the relay coil circuits, if the headlamps are necessary. The underhood fuse block supplies battery positive voltage to both relay switch circuits. When the low beam relay coil is energized, current flows through the HDLOBML fuse and the HDLOBMR fuse to the low beam headlamps. The headlamps have ground at G401. When the HDLP HI BM relay coil is energized, current flows through the HDHIBML fuse and the HDHIBMR fuse to the high beam headlamps. The high beam circuit is divided into a left and right side circuit. The current flow of the left high beam is from the fuse to the left high beam lamp. From the lamp, the current flows to the normally-closed contact of the daytime running lamp (DRL) relay to G104. The current flow of the right high beam is from the fuse to the right high beam headlamp. From the lamp, the current flow is to ground at G401. When the headlamp dimmer switch lever is pulled toward the driver, the Flash-To-Pass switch closes. This grounds the DIM Flash-To-Pass input. In response to this input, the DIM energizes the high beam relay. Both high beams remain on until the driver releases the switch handle. If the low beam headlamps were on during Flash-To-Pass operation, the low beams remain on.

Headlamps w/High Intensity Discharge (HID)

Normal operation of the HID system starts at the ballast. The headlamp ballast input connector receives the headlamp low beam supply voltage, which would normally be used to directly supply the low beam headlamp. Each ballast has a separate ground at G104. As soon as the input power is applied, the ballast draws 20?amps from the battery for 5-10?seconds (depending on the input voltage level). The ballast is then able to charge the two outputs leading to the start to -360?volts and +800?volts. -360?volts and +800?volts are the voltages needed by the starter to strike, or start, the lamp. HID headlamps do not have filaments like traditional bulbs. Instead, the starter uses a high-voltage transformer to convert the +800?volts input power into 25,000?volts. The increased voltage is used in order to create an arc between the electrodes in the bulb. The creation of this arc begins the start up process.

Low Voltage Operation of HID Headlamps

The DIM monitors the vehicle's system voltage while in the RUN power mode. When the system voltage drops below 8.9 volts, the following will occur

STAGE 1: If the low beam headlamps are on, whether manually or automatically the DIM will turn ON the high beam headlamps by activating it's High Beam output.

When the system voltage drops below 8.5 volts, the following will occur

1. STAGE 2: If the low beam headlamps are currently on, whether manually or automatically the DIM will turn OFF the low beam headlamps by deactivating it's Low Beam output.
2. If the headlamps are turned on manually, the manual switch redundancy will cause the low beam headlamps to remain on.
3. If the headlamp dimmer switch is in the HIGH BEAM position, the low beam headlamps will remain on. The DIM's High Beam output will apply ground through the high beam contact of the headlamp dimmer switch to the low beam relay coil.

If during the same ignition cycle, the DIM enters either STAGE 1 or STAGE 2 operations noted above, then determines that the system voltage has risen, the following will occur

1. If the DIM has entered STAGE 2 operation, it will not return to STAGE 1 operation until the system voltage rises above 9.4 volts.
2. If the DIM has entered STAGE 1 operation, it will not return to normal operation until the system voltage rises above 9.8 volts.

Electrical System Requirements (w/HID)

Ensure that the battery and the harness are capable of supplying up to 20 amps of current per ballast, with less than 2 volts of system loss or voltage drop. Each ballast requires the 20 amps in order to ensure normal start-up and run up of the lamp. (Run up is the term used to describe the extra power level given to the bulb from the -360 volt ballast output.) The input current during the steady state operation in 3.4 amps at 12.8 volts.

Run Up Of The Lamp (w/HID)

After the lamp receives the strike from the starter and the arc is established, the ballast uses its -360 volt output 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 2 seconds of the arc being established in the bulb, 70% of steady state is complete. 100% of the steady state is completed within 30 seconds. A 75-watt power level is necessary in order to bring the lamp to a steady state in such a short period of time. The 75-watt power level allows the lamp to meet the SAE light vs. time specification.

When To Change The HID Bulb

Bulb failure (end of life) occurs when the bulb gets older and becomes unstable. The bulb may begin shutting itself off sporadically and unpredictably at first, perhaps only once during a 24-hour period. When the bulb begins shutting itself off occasionally, the ballast will automatically turn the bulb back on again within 0.5 seconds. The ballast will re-strike 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 excessive, repetitive current input (20 amp). Repetitive and excessive restarts or re-strikes, without time for the ballast to cool down, will permanently damage the ballast. As a safeguard, when repetitive re-strikes are detected, the ballast will not attempt to re-strike the lamp. The ballast then shuts down and the bulb goes out.

The following symptoms are the noticeable signs of bulb failure

1. A flickering light, caused in the early stages of bulb failure
2. The lights go out, caused when the ballast detects excessive, repetitive bulb re-strike
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 ballast's 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 excessive, repetitive bulb re-strikes. When excessive, repetitive bulb re-strikes 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.

Bulb failures are often sporadic at first, and difficult to repeat. Technicians can identify bulb failure by observing if the problem gets progressively worse over the next 100 hours of operation.

Light Color (w/HID)

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 failure stage.

Cornering Lamps

The cornering lamps are located in the headlamp assembly. They are clear and illuminate the peripheral turn area of the vehicle. The cornering lamps will illuminate when all of the following conditions exist

1. The ignition switch is in the RUN or START position.
2. The park lamps are on.
3. The turn signal switch is placed in a position to indicate a left turn or a right turn.

When the park lamps are on, battery positive voltage is supplied to the turn signal switch. When the turn signal switch is placed in the position to indicate a LH or RH turn, battery positive voltage is supplied to the appropriate cornering lamp from the turn signal switch. Both cornering lamps have ground at G401.

Daytime Running Lamps (DRL)

With the daytime running lamps programmed to be on, the DRL will operate when the ignition switch is in the ON position, the gear selector is out of the PARK position, the headlamp switch is in the OFF position, and the ambient light sensor indicates daytime conditions. The ambient light sensor is a light sensitive variable resistor that varies its resistance according to the level of (outside) ambient light. The IPM receives an input voltage proportional to the resistance of the ambient light sensor. When the IPM receives this signal, the IPM sends a class 2 message to the DIM and to the rear integration module (RIM). When the headlamp switch is in AUTO, the DIM either turns on the DRL or turns on the low beam headlights, after a 20 second delay depending on whether daylight or low light conditions are sensed. Any function or condition that turns on the headlights will cancel the DRL operation. The DRL fuse in the underhood fuse block supplies battery positive voltage to the DRL relay switch. Battery positive voltage is also supplied to the DRL relay coil from the underhood fuse block which is energized by the DIM. When the DIM energizes the DRL relay coil, the current flows from the switch contacts of the DRL relay to the left high beam. After the left high beam, the current flows through the HDHIBML fuse and through the HDHIBMR fuse. The current continues through the right high beam to ground G401. The high beam headlamps are now in series, which reduces the intensity. The DRL operate when the ignition switch is in the RUN position, and the parking brake is not set or the transmission is not in park. When these conditions have been met and the ambient light sensor indicates daytime conditions, the DRL will illuminate.

Daytime Running Lamps (Norway and Sweden)

The DRL will operate when the ignition switch is in the ON position, the gear selector is out of the PARK position, the headlamp switch is in the OFF position, and the ambient light sensor indicates daytime conditions. Battery positive voltage is supplied from the rear fuse block EXPORT LGT fuse to the DRL relay coil and switch. When the Dash Integration Module (DIM) determines that conditions are present to activate the DRL, the DIM grounds the DRL relay coil. This energizes the DRL relay coil. Battery positive voltage is supplied through the DRL relay switch and to each low beam headlamp. The low beam headlamps have ground at G401. The park lamps will also illuminate.

Twilight Sentinel

The twilight delay switch in the headlamp switch assembly is supplied a 5 volt reference from the instrument panel integration module (IPM). The IPM also provides ground to the twilight delay switch. The switch is a potentiometer in which the resistance varies as the switch is moved. The IPM receives an input voltage proportional to the resistance of the potentiometer through the twilight delay signal circuit. The IPM sends a class 2 message to the dash integration module (DIM) indicating the on/off status and delay length for the twilight sentinel. With the twilight sentinel switch in any position other than OFF, the DIM will turn the headlamps on or off according to the daytime/nighttime status sent by the IPM. The DIM uses the twilight delay signal in order to keep the headlamps and park lamps on after the ignition switch transitions from ON to OFF during nighttime conditions.

Front Fog Lamps

With the ignition switch in the ON or START position, the front fog lamps will illuminate when the driver places the front fog lamp switch in the ON position. The front fog lamps will deactivate when the high beam headlamps are turned on. The underhood fuse block supplies battery positive voltage to the switch circuit of the FOG LP relay. Ignition voltage is available to the FOG LP relay coil. The Dash Integration Module (DIM) controls the FOG LP relay coil. When the front fog lamp switch is ON, the front fog lamp input of the Instrument Panel Integration Module (IPM) has ground. In response to this input, the IPM sends a class 2 message to the DIM, which energizes the FOG LP relay. The IPC illuminates the front fog lamp indicator when the IPC receives a class 2 message from the DIM after the front fog lamps have been requested. When the DIM energizes the FOG LP relay, the current flows from the FOG LP relay switch to both front fog lamps. The front fog lamps have ground at G401. The state of the front fog lamps (on or off) will remain the same until the front fog lamp switch is pressed again, even between ignition cycles. When the front fog lamps are on, the park lamps will also be activated.

Rear Fog Lamps

With the ignition switch in the ON or START position and the headlamps or the front fog lamps are on, the rear fog lamps will illuminate when the driver places the rear fog lamp switch in the ON position. The rear fog lamps will return to off between ignition cycles. If a flash-to-pass function is performed, the rear fog lamps will not turn off. The rear compartment relay center supplies battery positive voltage to the switch circuit of the RR FOG LP relay. Ignition voltage is available to the RR FOG LP relay coil. The Rear Integration Module (RIM) controls the RR FOG LP relay coil. When the rear fog lamp switch is placed in the ON position, the rear fog lamp input of the instrument panel integration module (IPM) has ground. In response to this input, the IPM sends a class 2 message to the RIM, which energizes the RR FOG LP relay. The IPC illuminates the rear fog lamp indicator when the IPC receives a class 2 message from the RIM after the rear fog lamps have been requested. When the RIM energizes the RR FOG LP relay, the current flows from the RR FOG LP relay switch to both rear fog lamps. The rear fog lamps have ground at G402.

Park, Tail, License and Marker Lamps

The park, tail, license and marker lamps are turned on when the headlamp switch is placed in the PARK LAMP or HEADLAMP position or anytime the headlights are requested. The park lamps are also turned on with the front fog lamps. When the ignition switch is in the ON position, the DIM provides battery positive voltage to the controlled positive voltage circuit of the PRK LP relay coil. The rear fuse block supplies battery positive voltage to the switch contacts of the PRK LP relay. When the headlamp switch is in the PARK LAMP or the HEADLAMP position, the signal circuit of the park lamp switch of the DIM has ground at G200. In response to this signal, the DIM provides ground to the control circuit of the PRK LP relay coil, which energizes the relay coil. This closes the relay switch contacts. Current flows from the PRK LP relay to the LP PK L fuse and to the LP PK R fuse. From the fuse, the current flows to the park lamps. The park lamps are grounded at G401 and G402. The DIMR fuse supplies battery positive voltage to the license lamps and to the DIM park lamp input, for interior lamps dimming. The license lamps are grounded at G402.

Position Lamps

The position lamps are on export vehicles only. Each lamp is located in the headlamp assembly. European countries require that side position lamps are activated when the vehicle is parked along the side of the road. The position function operates only when the gear selector is in the PARK position. The front position lamp and respective tail lamp illuminate when the headlamp switch is placed in the left or right position. Battery positive voltage is supplied to the STANDING LP relay coil and switch. Battery positive voltage is supplied through the normally closed relay contacts of the STANDING LP relay switch to each POSN LP relay coil. When the gear selector is in the PARK position, the dash integration module (DIM) grounds the STANDING LP relay coil which removes battery positive voltage from each POSN LP relay coil. The position lamps illuminate only when the ignition switch is in the OFF position. Battery positive voltage is supplied to each POSN LP relay switch. When the headlamp switch is placed in the RH PARK or the LH PARK position, the appropriate POSN LP relay coil is grounded through the headlamp switch contact. Battery positive voltage is then supplied to the appropriate position lamp and the respective tail/stop lamp. Both position lamps have ground at G401.

Remote Keyless Entry Exterior Lamp Illumination

When the remote function actuator (RFA) module receives a door UNLOCK command from the remote function actuator transmitter, the RFA will send a class 2 message to the dash integration module (DIM). The DIM must have inputs that indicate that the ignition switch is OFF, all the doors are closed, and the ambient light sensor is indicating low light conditions. The DIM will then activate the headlamp relay and park lamp relay. The DIM will flash the headlamps and park lamps twice, then keep them on approximately 25 seconds or until a door is opened. When the RFA module receives a door LOCK command from the remote function actuator transmitter, The DIM will flash the headlights and park lights once. In daylight conditions, the DIM will activate the park lamp relay only to flash the park lamps twice with a door UNLOCK command and once with a door LOCK command from the remote function actuator transmitter.

Turn Signal Lamps

The TSIG/HAZ fuse in the rear fuse block supplies battery positive voltage to the flasher module. The module is part of the hazard switch assembly. The flasher module has ground at G201. The turn signal lamps may only be activated with the ignition switch in the ON or START position. The IGN-1 fuse in the rear fuse block supplies battery positive voltage to the turn signal switch. When the turn signal switch is placed in either the left or right position, current flows from the turn signal switch assembly to the flasher module. The flasher module then sends an on-off voltage signal to either the left or right turn signals and their instrument cluster (IPC) indicator: When the hazard switch is pressed, the switch contacts are close and the turn signal/hazard flasher module hazard input is grounded. In response to this input, the turn signal/hazard flasher module supplies battery positive voltage in an on and off flashing pattern to all the turn signal lamps. This also activates both turn signal indicators. When a THEFT is occurring, the Dash Integration Module (DIM) grounds the turn signal/hazard flasher module hazard input. The left turn signals have ground at G401 and at G402. The right turn signals have ground at G401.

Repeater Lamps

The repeater lamps are on export vehicles only. Each lamp is located in the front fender. The repeater lamps are used as additional turn signal lamps, and operate as described above. The repeater lamps have ground at G104.

Stop Lamps

The STOP LP fuse in the rear fuse block supplies battery positive voltage to the normally open stop lamp switch. When the driver presses the brake pedal, the switch contacts close. The battery positive voltage flows to the left stop lamp assemblies, to the right stop lamp assemblies, and to the center high mounted stop lamp (CHMSL). The left stop lamp and the CHMSL have ground at G402. The right stop lamp has ground at G401.

Backup Lamps

The rear fuse block supplies battery positive voltage to the coil and to the switch terminals of the reverse lamp relay. Battery positive voltage to the switch terminal is available through the NSBU fuse. The dash integration module (DIM) sends a power mode message to the rear integration module (RIM) indicating that the ignition is in the ON position. When the driver places the gear selector in the REVERSE position, the powertrain control module (PCM) sends a class 2 message to the RIM. The message indicates that the gear selector lever is in the REVERSE position. The RIM then energizes the reverse lamp relay and the backup lamps illuminate. Current flows from the reverse lamp relay switch to the backup lamps. The backup lamps have ground at G402.

Underhood Lamp

The underhood lamp is located in the engine compartment, on the left rear of the hood. When the park lamps are on, battery positive voltage is supplied to the underhood lamp. The underhood lamp has ground at G101. When the hood is opened, The switch in the underhood lamp closes and provides ground to the underhood lamp.

Battery Run Down Protection/Inadvertent Power

To provide battery run down protection, the exterior lamps will be deactivated automatically under certain conditions. The dash integration module (DIM) 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 DIM initiates a 10 minute timer. At the end of the 10 minutes, the DIM will turn off the control power output to the park and headlamp relay coils, deactivating the exterior lamps. This feature will be cancelled if any power mode other than OFF becomes active.

The DIM 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 DIM determined that the park or headlamp switch was not active when the ignition was turned OFF.

Interior Lamps

The interior lamps consist of two groups. The first group are those lamps which may not be dimmed. The second group includes lamps that may be dimmed.

Courtesy/Illuminated Entry Lamps

Courtesy/illuminated entry lamps are lamps that may be illuminated by opening a door, manually operating a switch, or through a remote control door lock receiver (RCDLR) command. This group consists of the following lamps

1. The courtesy/reading lamps
2. The door courtesy lamps
3. The footwell lamps
4. The ignition key cylinder lamp
5. The vanity mirror lamps
6. The IP compartment lamp
7. The rear compartment lamp

Courtesy/Illuminated Entry: The INT LP fuse in the rear fuse block supplies battery positive voltage to the normally open switch contacts of the INT LP relay. The rear fuse block supplies battery positive voltage to the FRT CTSY relay coil and the RR CTSY relay coil. The door modules communicate on a simple bus interface (SBI). When you open any door, the switch contacts of the door jamb close. When a door open input is grounded, that door module sends a message to the driver door module (DDM) in order to indicate that a door is open. The DDM then sends a class 2 message to the rear integration module (RIM) in order to indicate which door is open. When the ambient light sensor indicates low light conditions, the RIM activates the INT LP relay in order to provide battery positive voltage to the interior courtesy lamps. When any front door is opened, the RIM will energize the FRT CTSY relay grounding the overhead courtesy/reading lamps, the foot well lamps, and all door courtesy lamps to G301. The driver door module will also illuminate all backlit components in the driver's door at full brightness. The ignition key cylinder lamp will also illuminate. When any rear door is opened, the RIM will energize both the FRT CTSY relay and the RR CTSY relay. The rear courtesy/reading lamps then illuminate, since they are grounded to G402. The driver door module will also illuminate all backlit components in the driver's door at full brightness. The ignition key cylinder lamp will also illuminate. When all of the doors have been closed, the courtesy lamps will remain illuminated for approximately 25 seconds. If the ignition switch is placed in the RUN position, or the interior lamp switch is placed in the OFF position before the end of the elapsed period the lamps will deactivate immediately, except for the driver's door switch backlighting. The courtesy lamps will also deactivate immediately if an all door lock command is received with all of the doors closed.

Ignition Key Cylinder Lamp: When the interior lamps are activated by the RCDLR, by opening any door, or by placing the interior lamp switch in the ON position, the ignition key cylinder lamp will illuminate. The RIM sends a class 2 message to the instrument panel integration module (IPM) to activate the ignition key cylinder lamp.

IP Compartment Lamp: The RIM energizes the interior lamp relay which provides battery positive voltage to the instrument panel (IP) compartment lamp. When the IP compartment is opened, its switch closes to provide a ground circuit and the IP compartment lamp illuminates.

Keyless Entry Illumination: When the RCDLR receives a door unlock command from the keyless entry transmitter, the RCDLR will send a class 2 message to the rear integration module (RIM) indicating that an UNLOCK command was received. The RIM must have inputs that indicate that the ignition switch is OFF, all the doors are closed, and the ambient light sensor is indicating low light conditions. The interior lamp switch must not be in the OFF position. The RIM will then activate the interior lamp relay, providing battery positive voltage to the interior lamps, and activate both the FRT CTSY relay and the RR CTSY relay. The RIM will keep all of the courtesy lamps on for approximately 40 seconds. If the door locks are activated to the LOCK position the courtesy lamps will deactivate immediately. The courtesy lamps will also turn off immediately if the ignition switch is placed in the RUN position.

Manual Interior Lighting: The interior lamps may also be illuminated manually in any ambient light status. The 3 positions of the interior lamp switch in the overhead console are ON, AUTO, and OFF. The ON and OFF positions are inputs to the IPM. When the interior lamp switch is placed in the ON position, the interior lamp switch on signal circuit is grounded to G402. The IPM then sends a class 2 message to the RIM to activate all courtesy lamps. When the interior lamp switch is in the OFF position, the courtesy lamps will not illuminate under any circumstances, except post SIR deployment.

Reading Lamps: The RIM energizes the interior lamp relay which provides battery positive voltage to the reading lamps. By placing a reading lamp switch in the ON position the switch closes and provides a path to ground and the reading lamp illuminates.

Rear Compartment Lamp: The RIM energizes the interior lamp relay which provides battery positive voltage to the rear compartment lamp. When the rear deck lid opens, the rear compartment lamp switch in the latch assembly closes to provide a ground for the rear compartment lamp.

Supplemental Inflatable Restraint (SIR) Interior Illumination: When the supplemental inflatable restraint (SIR) system is activated, all courtesy lamps will illuminate. The inflatable restraint sensor and diagnostic module (SDM) sends a class 2 message to the RIM. The ignition switch must be in the RUN position. The RIM will activate both the FRT CTSY relay and the RR CTSY relay approximately 15 seconds after airbag deployment, regardless of ambient light status or the position of the interior lamp switch. The interior lamps will remain illuminated until there is a change in power mode.

Vanity Mirror Lamps: The RIM energizes the interior lamp relay which provides battery positive voltage to the vanity mirror lamps. When the vanity mirror cover on the sunshade is opened, its switch closes to provide a ground circuit and the vanity lamp illuminates. The vanity mirror lamp may be dimmed by the sliding switch next to the mirror. The switch is a potentiometer in which the resistance varies as the switch is moved. As the resistance of the potentiometer increases, the vanity lamp receives less voltage. The vanity lamp then becomes dimmer.

Interior Lamps Dimming

Interior lamp dimming are lamps that may be dimmed by operating the IP Dimmer switch. This group consist of the following lamps

1. The door switches and the window switches
2. The HVAC control head assembly
3. The radio
4. The instrument panel cluster (IPC)
5. The headlamp switch assembly
6. The hazard warning switch
7. The ashtray lamp
8. The shift indicator lamp
9. The driver information center (DIC) switches
10. The traction control switch
11. The heated seat and the memory seat switches
12. The steering wheel controls

When the ignition switch is turned to the ON position, the vacuum fluorescent (VF) displays turn on at maximum brightness. When the park lamps are on and the ambient light sensor indicates low light conditions, all incandescent back lighting and vacuum fluorescent (VF) displays turn on at the dimming level indicated by the IP dimmer switch. The rear fuse block supplies battery positive voltage to the normally open switch of the PRK LP relay. The dash integration module (DIM) provides battery positive voltage to the PRK LP relay coil. The DIM also provides ground to the control circuit of the PRK LP relay coil. When the DIM energizes the park lamp relay, current flows through the PRK LP relay switch to the DIMR fuse to the instrument panel lamp fuse supply voltage-1 circuit of the DIM. With the park lamps on, the DIM sends pulse width modulated (PWM) voltage to the backlight lamps control circuit in response to an input from the instrument panel integration module (IPM). The potentiometer of the IP dimmer switch receives a reference voltage and ground from the IPM. The potentiometer is an input to the IPM. When the driver selects a dimming setting, the IPM responds with a message to the DIM indicating this setting. All vacuum fluorescent (VF) lamps and all incandescent back lighting lamps have ground at G200 and at G201. When the IP dimmer switch is moved from MIN to MAX, all vacuum fluorescent (VF) displays, as well as all incandescent back lighting respond from Minimum intensity to maximum brightness in response to the IP dimmer switch. The instrument cluster provides a 54 volt supply to the instrument panel integration module (IPM). The supply circuit is used to power the HVAC vacuum fluorescent (VF) display. The incandescent back lighting for the doors also operates in response to a class 2 message regarding dimming intensity. The IPM sends the message to the driver door module (DDM). The DDM sends a simple bus interface (SBI) message regarding dimming intensity to all the other door modules. The driver may select parade mode by manually turning on the park lamps during daylight conditions. The front park lamp circuit supplies voltage to the instrument panel cluster, radio and HVAC assembly for a park lamp on input, and the displays will become full bright.

To provide battery run down protection, the interior lamps will be deactivated automatically under certain conditions. The rear integration module (RIM) initiates a 10 minute timer if the interior lamp relay control output is still active, and the ignition switch is turned to the OFF position. The RIM timer is set to 3 minutes until the vehicle mileage is above 15 miles. At the end of the designated time, the RIM will deactivate the interior lamp relay, the FRT CTSY relay, and the RR CTSY relay disabling the interior lamps. This feature will be cancelled if any power mode other than OFF becomes active. The timer will reset if any of the doors are opened prior to the timer expiring. The timer will not reset if the rear compartment lamp switch, any of the reading lamp switches, the IP compartment lamp switch, or any of the vanity lamp switches are in the ON position when the timer expires.

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Begin the system diagnosis with the Diagnostic System Check - Lighting Systems . The Diagnostic System Check will provide the following information

1. The identification of the control module(s) which command the system.
2. The ability of the control module(s) to communicate through the serial data circuit.
3. The identification of any stored diagnostic trouble codes (DTCs) and their status.

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

Scheme 151

1. 2. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
2. 4. DTCs from all of the modules listed must be retrieved.
3. 5. The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.

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Scheme 158

Scheme 159

Scheme 160

Scan Tool Data Definitions

8-Digit GM Part Number: Displays the part number for the control module.

Battery Voltage: Displays 0 to 25.5 volts. The battery voltage level at the module.

Calibration ID: Displays the calibration ID for the control module.

Component Serial #8-11: Digits 8 to 11 of the component serial number of the control module.

Component Serial #12: Digit 12 of the component serial number of the control module.

Component Serial #13-16: Digits 13 to 16 of the component serial number of the control module.

Component Serial #17-18: Digits 17 to 18 of the component serial number of the control module.

Control Power: Displays Off or On. The commanded state of the control power terminal.

Daytime Running Lamp: Displays Off or On. The commanded state of the DRL relay.

Flash to Pass Switch: Displays Off or On. The status of the flash to pass switch.

Fluorescent Light: Displays 0 to 100%. The fluorescent light level of the instrument cluster.

Front Fog Lamp Relay: Displays Off or On. The commanded state of the front fog lamp relay.

Front Fog Lamp Switch: Displays Off or On. The status of the front fog lamp switch.

Hazard Lamp Switch: Displays Off or On. The status of the hazard lamp switch.

Head Lamp Switch: Displays Off or On. The status of the headlamp switch.

High Beam Output: Displays Off or On. The commanded state of the flash to pass control terminal.

High Beam Output (Flash to Pass): Displays Off or On. The commanded state of the flash to pass control terminal.

Hood Jamb Switch: Displays Off or On. The status of the hood jamb switch.

Incandescent Dim #1: Displays the percentage of dimming sent to the incandescent lamps.

Interior Dim Pot: Displays 0-5 volts. The interior dimmer switch input signal.

Interior Lamp Input: Displays Off or On. The status of the inadvertent power input.

Interior Lamp Switch: Displays Auto or On. The status of the interior lamp switch.

Interior Lighting Relay: Displays Off or On. The commanded state of the interior lamp relay.

Julian Date of Build: Displays year and day. The first digit indicates the last digit of the year that the control module was built. The remaining 3 digits indicate the day of the year that the control module was built.

Left Turn Signal: Displays Off or On. The status of the discrete left turn signal. The instrument cluster uses this input to determine when to flash the left turn indicator.

Low/High Beam Output: Displays Off or On. The commanded state of the headlamp control terminal.

Overhead Lamps Output: Displays Off or On. The status of the CTSY LP 1 terminal.

Park Lamp: Displays Off or On. The status of the park lamp switch.

Park Lamp Relay Output: Displays Off or On. The commanded state of the park lamp relay.

Position Lamp Disable: Displays Off or On. The commanded state of the standing lamp relay.

PROM ID: Displays the PROM ID for the control module.

Reverse Lamp Relay: Displays Off or On. The commanded state of the reverse lamp relay.

Right Turn Signal: Displays Off or On. The status of the discrete right turn signal. The instrument cluster uses this input to determine when to flash the right turn indicator.

Trailer Detection Input: Displays Off or On. The status of the trailer detect terminal.

Twilight Delay Pot: Displays 0-5 volts. The twilight delay switch input signal.

Twilight Photocell: Displays 0-5 volts. The ambient light sensor input signal.

VF Dim: Displays Off or On. The vacuum fluorescent (VF) display dimming level of the instrument cluster.

Wiper Switch: Displays Off or On. The status of the wiper switch.

Year Module Built: Displays the year that the control module was built.

Scheme 161

Circuit Description

The IPM monitors the ambient light conditions through the ambient light sensor. The ambient light sensor is a variable resistor whose resistance changes as the ambient light level around it changes. As the ambient light decreases, the resistance of the ambient light sensor increases. The value of the input will be between 5 and 250 Counts.

Conditions for Running the DTC

The ignition switch is in the ON position.

Conditions for Setting the DTC

The IPC will set the DTC B2419 when it detects that the ambient light sensor input is less than 5 counts or greater than 250 counts for three seconds.

Action Taken When the DTC Sets

The IPC will assume that the ambient light level indicates darkness for all functions needing the outside light status.

Conditions for Clearing the DTC

The IPM sees that the ambient light sensor input is between 5 and 250 Counts.

The numbers below refer to the step numbers on the diagnostic table

Scheme 162

Scheme 163

1. 1. Perform the Lighting Systems Diagnostic System Check before continuing with the diagnosis of this DTC.
2. 2. Checks if the value that the Instrument Panel Integration Module (IPM) is reading from the ambient light sensor is within the valid range.
3. 3. Checks if the value that the Instrument Panel Integration Module (IPM) is reading from the ambient light sensor is too High.
4. 4. Checks if the value that the Instrument Panel Integration Module (IPM) is reading from the ambient light sensor is too low.

The twilight delay pot sensor is a potentiometer. The instrument panel integration module (IPM) determines the control setting based on the voltage from the twilight delay pot sensor. As the resistance of the twilight delay switch varies, the voltage input to the IPM changes. The IPM performs a diagnostic test on the twilight delay input circuit every 150 milliseconds.

1. The ignition switch is in the ON position.
2. The IP dimmer switch is set to MAXIMUM.
3. The headlamps are ON.

The IPM will set the DTC B2420 when it detects that twilight delay input is less than 5 Counts or greater than 250 counts for 3 consecutive tests.

The IPM will assume that the twilight switch is on and the twilight delay indicates the maximum.

The IPM sees that the twilight delay input is between 5 and 250 Counts.

The numbers below refer to the step numbers on the diagnostic table.

Scheme 164

Scheme 165

1. 3. Tests for the proper operation of the circuit in the high voltage range.
2. 4. Tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.
3. 5. Tests for a short to ground in the 5 volt reference circuit.

The interior lamp rheostat is a potentiometer. The Instrument Panel Integration Module (IPM) determines the control setting based on the voltage from the interior lamp rheostat. The IPM monitors the voltage in the instrument panel lamps dimmer switch signal circuit every 150 milliseconds.

The ignition switch is in the ON position.

The interior lamp rheostat is less than 17 Counts or greater than 240 counts on 3 consecutive tests.

Set dimming level to full brightness for all displays.

The IPM detects that the interior lamp rheostat is between 17 and 240 Counts.

The numbers below refer to the step numbers on the diagnostic table.

Scheme 166

Scheme 167

Scheme 168

1. 3. Tests for the proper operation of the circuit in the high voltage range.
2. 4. Tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.
3. 5. Tests for a short to ground in the 5 volt reference circuit.

Important: The following steps must be completed before using the symptom table.

1. Perform the «Diagnostic System Check - Lighting Systems»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) before using the symptom tables in order to verify that all of the following are true: There are no DTCs set. The control module(s) can communicate via the serial data link.
2. Review the system description and operation in order to familiarize yourself with the system functions. Refer to the following: «Interior Lighting Systems Description and Operation»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) «Exterior Lighting Systems Description and Operation»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the lighting system.
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

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

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Backup Lamps Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
2. «Backup Lamps Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
3. «Cornering Lamps Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
4. «Cornering Lamps Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
5. «Courtesy Lamps Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
6. «Courtesy Lamps Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
7. «Daytime Running Lamps (DRL) Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
8. «Daytime Running Lamps (DRL) Inoperative (Domestic)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Daytime Running Lamps (DRL) Inoperative (Export)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
9. «Fog Lamp Indicator Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
10. «Fog Lamp Indicator Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
11. «Fog Lamps Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
12. «Fog Lamps Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
13. «Hazard Lamps Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
14. «Hazard Lamps Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
15. «Headlamps Always On - Low or High Beam (Domestic)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamps Always On - Low or High Beam (Export)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
16. «Headlamps Inoperative - Low Beams (Domestic, Europe and Japan )»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamps Inoperative - Low Beams (Domestic, Europe and Japan w/HID)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamps Inoperative - Low Beams (Norway/Sweden)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamps Inoperative - Low Beams (Norway/Sweden w/HID)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
17. «Headlamps Inoperative - High Beams (Domestic)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamps Inoperative - High Beams (Export)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
18. «Headlamps Inoperative - Flash to Pass»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
19. «Headlamps Suggested Message On in Daylight Conditions»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
20. «High Beam Indicator Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
21. «High Beam Indicator Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
22. «Ignition Lock Cylinder Lamp Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
23. «Ignition Lock Cylinder Lamp Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
24. «Interior Backlighting Does Not Dim»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
25. «Interior Backlighting Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
26. «Instrument Panel (I/P) Compartment Lamp Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
27. «Instrument Panel (I/P) Compartment Lamp Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
28. «License Lamps Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
29. «Lights On Indicator Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
30. «Lights On Indicator Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
31. «Park Lamps Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
32. «Park, License, and Tail Lamps Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
33. «Position Lamps Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
34. «Reading Lamp(s) Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
35. «Reading Lamp(s) Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
36. «Rear Compartment Lamp(s) Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
37. «Rear Compartment Lamp(s) Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
38. «Repeater Lamps Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
39. «Stop Lamps Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
40. «Stop Lamps Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
41. «Turn Signal Lamps and/or Indicators Always On or Flashing»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
42. «Turn Signal Lamps and/or Indicators Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
43. «Twilight Sentinel Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
44. «Underhood Lamp Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
45. «Underhood Lamp Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
46. «Vanity Mirror Lamp(s) Always On»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
47. «Vanity Mirror Lamp(s) Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
48. «Vacuum Fluorescent (VF) Displays Inoperative»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)

Scheme 169

Scheme 170

Scheme 171

Scheme 172

Scheme 173

Scheme 174

Scheme 175

Scheme 176

Scheme 177

Scheme 178

Scheme 179

Scheme 180

Scheme 181

Scheme 182

Scheme 183

Scheme 184

Scheme 185

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Scheme 187

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Scheme 189

Scheme 190

Scheme 191

Scheme 192

Scheme 193

Scheme 194

1. 2. The front fog lamp switch must be placed in the ON position in order to operate the rear fog lamps (w/T79).
2. 3. This step verifies whether both front fog lamps, or both rear fog lamps (w/T79) are inoperative.

Scheme 195

Scheme 196

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Scheme 212

Scheme 213

Scheme 214

Scheme 215

The number(s) below refer to the step number(s) on the diagnostic table.

Scheme 216

Scheme 217

Scheme 218

1. 4. Listen for an audible click when the relay operates. Cycle between low and high positions. Repeat the cycles as necessary.
2. 5. Tests for supply voltage at the coil side of the relay.
3. 6. Verifies that the headlamp switch is providing ground to the relay.

Scheme 219

Scheme 220

Scheme 221

Scheme 222

Scheme 223

Scheme 224

Scheme 225

Scheme 226

The numbers below refer to the step numbers on the diagnostic table.

Scheme 227

1. 2. Watch for the ignition key cylinder lamp operation. Command both the ON and OFF states. Repeat the commands as necessary.

Scheme 228

Scheme 229

Scheme 230

Scheme 231

Scheme 232

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Scheme 238

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Scheme 241

Scheme 242

Scheme 243

Scheme 244

Scheme 245

Scheme 246

Scheme 247

Scheme 248

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Scheme 250

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Scheme 252

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Scheme 255

Scheme 256

Scheme 257

Scheme 258

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Scheme 260

Scheme 261

Scheme 262

Scheme 263

Scheme 264

Vacuum Fluorescent Displays Inoperative

Vacuum Fluorescent Displays Inoperative

Removal Procedure

The headlamp, foglamp switch assembly uses skin locks which grab the soft skin material of the IP. The skin lock feature may cause the switch to be hard to remove.

Scheme 265

Scheme 266

1. Remove left IP end cap.
2. Push on rear side of headlamp, fog lamp switch assembly.
3. Disconnect the electrical connectors.
4. Remove the headlamp switch.

Scheme 267

1. Connect electrical connectors.
2. Align headlamp, fog lamp switch assembly with opening in IP and push into position until flush with IP surface.
3. Install left IP end cap

The fog lamp, IP dimmer switch assembly uses skin locks which grab the soft skin material of the IP. The skin lock feature may cause the switch to be difficult to remove.

Scheme 268

Scheme 269

1. Remove right IP end cap.
2. Push on rear side of fog lamp, IP dimmer switch assembly.
3. Disconnect the electrical connector.
4. Remove the fog lamp, IP dimmer switch assembly from the IP.

Scheme 270

1. Connect electrical connector.
2. Align the fog lamp, IP dimmer switch assembly with opening in IP.
3. Push in on the push into position until flush with IP surface, until the switch assembly is flush with IP surface.
4. Install left IP end cap.

Scheme 271

Scheme 272

Scheme 273

1. Remove the instrument panel right accessory trim plate
2. Disconnect the electrical connector.
3. Remove the hazard switch by releasing the locking tabs.
4. Remove the hazard switch.

Scheme 274

Scheme 275

1. Press the hazard switch into the bezel until the locking tabs lock.
2. Connect the hazard switch electrical connector.
3. Install the instrument panel right accessory trim plate.

1. Open and support the hood
2. Remove the protective cover from the underhood fuse block.
3. Remove the high beam headlamp relay (4) or the low beam headlamp relay (3) from the underhood fuse block.

Scheme 276

1. Install the high beam headlamp relay (4) or the low beam headlamp relay (3) to the underhood fuse block.
2. Install the protective cover to the underhood fuse block
3. Close the hood

Removal

1. Open and support the hood
2. Remove the protective cover from the underhood fuse block.
3. Remove the fog lamp relay (2) from the underhood fuse block

Installation Procedure

1. Install the fog lamp relay (2) to the underhood fuse block.
2. Install the protective cover to the underhood fuse block
3. Close the hood

1. Remove the rear seat cushion
2. Remove the rear fuse block cover in order to gain access to the reverse lamp relay
3. Remove the reverse lamp relay (1) from the rear fuse block

Scheme 277

1. Install the reverse lamp relay (1) into the rear fuse block
2. Install the rear fuse block cover
3. Install the rear seat cushion

1. Remove the rear seat cushion in order to gain access to the rear fuse block
2. Remove the rear fuse block cover in order to gain access to the reverse lamp relay
3. Remove the park lamp relay (2) from the rear fuse block

1. Install the park lamp relay (2) to the rear fuse block
2. Install the rear fuse block cover
3. Install the rear seat cushion

1. Open and support the hood
2. Remove the protective cover from the underhood fuse block.
3. Remove the DRL relay (1) from the underhood fuse block.

1. Install the DRL relay (1) to the underhood fuse block
2. Install the protective cover to the underhood fuse block
3. Close the hood

The hazard and the turn signal flashers are part of the Hazard Switch assembly. If the hazard flasher or the turn signal flasher needs to be replace, it will require replacement of the Hazard Control Switch.

Scheme 278

Scheme 279

Scheme 280

1. Remove the instrument panel right accessory trim plate.
2. Disconnect the electrical connector.
3. Remove the hazard switch by releasing the locking tabs.
4. Remove the hazard switch.

Scheme 281

Scheme 282

1. Press the hazard switch into the bezel until the locking tabs lock.
2. Connect the hazard switch electrical connector.
3. Install the instrument panel right accessory trim plate.

Scheme 283

Scheme 284

Scheme 285

1. Open the hood.
2. Remove the upper filler panel.
3. Remove the two fasteners retaining the headlamp to the headlamp mounting bracket.
4. Pull the headlamp straight forward in order to disengage the locator pin at the outboard edge of the headlamp.
5. Disconnect the headlamp electrical connector from the forward lamp wiring harness.
6. Remove the headlamp from the vehicle.

Scheme 286

Scheme 287

Scheme 288

1. Install the headlamp to the vehicle.
2. Connect the headlamp electrical connector to the forward lamp wiring harness.
3. Position the outboard portion of the headlamp to the locator pin, in order to align the locator pin with the headlamp mounting bracket.
4. Press the headlamp rearward in order to engage the locator pin with the headlamp mounting bracket.
5. Install the two fasteners in order to secure the headlamp to the headlamp mounting bracket. Tighten Tighten the headlamp mounting fasteners to 9 N.m (80 lb in).
6. Install the upper filler panel.
7. Close the hood.

Scheme 289

Scheme 290

Scheme 291

Scheme 292

Scheme 293

Scheme 294

1. Remove the low beam headlamp relay in order to disable the HID (High Intensity Discharge) headlamps. Refer to «Headlamp Relay Replacement»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .
2. Remove the upper filler panel.
3. Remove the (1) fasteners securing the headlamp (2) to the headlamp mounting bracket.
4. Pull the headlamp assembly straight forward in order to disengage the locator pin at the outboard edge of the headlamp.
5. Remove the arc tube and starter cover (1) from the headlamp assembly (2).
6. Disconnect the arc tube and starter (2) electrical connector (1).
7. Carefully release the arc tube and starter cable (1) from the headlamp housing (2).
8. Disconnect the headlamp electrical connector from the forward lamp wiring harness.
9. Remove the headlamp housing assembly from the vehicle.

Important: Ensure the grommet attached to the arc tube and starter is properly installed and sealed to the headlamp assembly, in order to avoid water intrusion in the headlamp assembly.

Scheme 295

Scheme 296

Scheme 297

Scheme 298

Scheme 299

Scheme 300

1. Install the arc tube and starter cable (1) to the headlamp housing (2).
2. Ensure the arc tube and starter cable grommet is properly seated.
3. Connect the arc tube and starter (2) electrical connector (1). Important: Ensure the arc tube and starter moisture cover is properly installed and sealed to the headlamp assembly in order to avoid water intrusion in the headlamp assembly.
4. Install the arc tube and starter moisture cover (1) to the headlamp assembly (2).
5. Connect the headlamp electrical connector to the forward lamp wiring harness.
6. Position the outboard portion of the headlamp in order to align the locator pin with the headlamp mounting bracket.
7. Press the headlamp rearward in order to engage the locator pin with the headlamp mounting bracket.
8. Install the fasteners in order to secure the headlamp to the headlamp mounting bracket. Tighten Tighten the headlamp mounting fasteners to 9 N.m (80 lb in).
9. Install the upper filler panel.
10. Install the low beam headlamp relay. Refer to «Headlamp Relay Replacement»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)

Note. When removing or replacing the arc tube, the arc tube must not contact the side of the headlamp housing or the bulb shield. Damage to the arc tube may result.

Scheme 301

Scheme 302

Scheme 303

1. Remove the low beam headlamp relay in order to disable the HID (High Intensity Discharge) headlamp system. Refer to «Headlamp Relay Replacement»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
2. Remove the headlamp. Refer to «Headlamp Replacement (SLS, w/o TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamp Replacement (SLS and STS w/TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .
3. Remove the arc tube and starter cover (1) from the headlamp housing (2).
4. Disconnect the electrical connector (1) from the arc tube and starter assembly (2).
5. Remove the arc tube and starter assembly fasteners (1).
6. Remove the arc tube and starter assembly (2) from the headlamp housing (3).

Note. Avoid touching the bulb or letting the bulb come in contact with anything damp. Oil from your skin or moisture on the bulb can cause the bulb to explode when the bulb is turned on. If either comes in contact with the bulb, clean the bulb with alcohol or a suitable degreaser and wipe the bulb dry.

Important: Ensure that the electrical connection is pointed towards the bottom of the headlamp housing.

Scheme 304

Scheme 305

Scheme 306

1. Install the arc tube and starter assembly (2) to the headlamp housing (3).
2. Instal the fastener (1) in order to secure the arc tube starter (2) to the headlamp housing (3). Tighten Tighten the starter/arc tube fasteners to 3.5 N.m (31 l)
3. Connect the electrical connection (1) to the arc tube and starter assembly (2). Important: Ensure the arc tube and starter cover is properly installed and sealed to the headlamp assembly in order to avoid water intrusion in the headlamp assembly.
4. Install the arc tube and starter cover (1) to the headlamp housing (2).
5. Install the headlamp to the vehicle. Refer to «Headlamp Replacement (SLS, w/o TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamp Replacement (SLS and STS w/TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .
6. Install the low beam headlamp relay. Refer to «Headlamp Relay Replacement»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)

Removal Procedures

Scheme 307

Scheme 308

Scheme 309

Scheme 310

1. Remove the low beam headlamp relay in order to disable HID (High Intensity Discharge) headlamp system. Refer to «Headlamp Relay Replacement»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)
2. Remove the headlamp. Refer to «Headlamp Replacement (SLS, w/o TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamp Replacement (SLS and STS w/TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .
3. Remove the 3 fasteners (1) that secure the HID ballast to the underside of the headlamp mounting bracket (2).
4. Disconnect the HID ballast electrical connector. The HID ballast feed electrical connector is located towards the rear of the ballast, opposite the arc tube and starter cable connection. Important: The HID ballast will need to be rotated approximately 90° in order to remove the ballast from the opening between the headlamp mounting bracket and the front bumper cover.
5. Remove the HID ballast (1) from the opening between the headlamp mounting bracket and the front bumper cover.
6. Remove the ballast cable connection cover (1) from the ballast (4) by removing the 2 fasteners that secure the cover.
7. Remove the connector position assurance (CPA) (1) from the HID ballast electrical connector (2).
8. Remove the electrical connector and cable assembly (2) from the HID ballast (3).

Scheme 311

Scheme 312

Scheme 313

Scheme 314

1. Install the electrical connector and cable assembly to the ballast (3).
2. Install the (CPA) (1) to the ballast electrical connector (2).
3. Install the ballast cable connection cover (1) to the ballast (4).
4. Install the ballast cable connection cover fasteners Tighten Fasteners for the ballast cover (1) should be fully driven, seated and not stripped.
5. Install the HID ballast (1) to the vehicle.
6. Connect the HID ballast (1) feed electrical connecting
7. Connect the HID ballast (1) feed electrical connecting
8. Install the 3 HID ballast fasteners (1) in order to secure the HID ballast to the headlamp mounting bracket (2). Tighten Tighten the ballast fasteners to 5.5 N.m (49 lb in). Important: Ensure the grommet attached to the arc tube and starter is properly installed and sealed to the headlamp assembly, in order to avoid water intrusion in the headlamp assembly. Ensure the arc tube and starter cover is properly installed and sealed to the headlamp assembly in order to avoid water intrusion in the headlamp assembly.
9. Install the headlamp. Refer to «Headlamp Replacement (SLS, w/o TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamp Replacement (SLS and STS w/TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .
10. Install the low beam headlamp relay. Refer to «Headlamp Relay Replacement»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems)

Scheme 315

1. Remove the headlamp assembly from the vehicle. Refer to «Headlamp Replacement (SLS, w/o TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamp Replacement (SLS and STS w/TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .
2. Disconnect the electrical connector (3) from the headlamp bulb (2).
3. Turn the headlamp bulb (2) counter clockwise in order to disengage it from the headlamp assembly (1).
4. Remove the headlamp bulb (2) from the headlamp assembly (1).

Scheme 316

1. Install the headlamp bulb (2) into the headlamp assembly (1).
2. Turn the headlamp bulb (2) clockwise in order to secure it to the headlamp assembly (1).
3. Connect the electrical connector (3) to the headlamp bulb (2).
4. Install the headlamp assembly to the vehicle. Refer to «Headlamp Replacement (SLS, w/o TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamp Replacement (SLS and STS w/TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .

Area Preparation

1. The aiming area should be darkened and large enough to accommodate the vehicle and an additional 7.62 m (25 ft) measured from the headlamp aim dots to the screen or wall.
2. The floor on which the vehicle rests must be square with the front of the screen or wall. If the floor is not level, compensate as necessary.
3. If you are using an aiming screen, it should be at least 1.52 m (5 ft) high by 3.66 m (12 ft) wide with a matte white surface well-shaded from extraneous light, and properly adjusted to the floor on which the vehicle stands.
4. If you are using a wall, it should be at least 1.83 m (6 ft) high by 3.66 m (12 ft) wide, finished with a washable non gloss white paint.

Adjustment Procedure

Important: If the vehicle regularly carries an unusual load in the rear compartment, or a trailer, these loads should be on the vehicle when the headlamps are checked.

Scheme 317

Scheme 318

Scheme 319

Scheme 320

Scheme 321

Scheme 322

Scheme 323

1. Completely assemble all the components to the vehicle.
2. Place the vehicle on a level pad or surface.
3. Stop all unnecessary operations or work on the vehicle that affects the vehicle trim.
4. Close the doors.
5. Verify that the tires are inflated to the proper tire pressure.
6. Rock the vehicle sideways to stabilize the suspension. Important: The horizontal aiming of the headlamps must be performed before the vertical aiming to obtain the correct headlamp aim.
7. Set the horizontal aim gage (2) to the 0 (zero) mark by turning the horizontal aim screw (1) until the pointer is lined up with the 0 (zero). Important: If the fuel tank is near empty to 1/4 full, adjust the vertical aim to negative 4 degrees.
8. If equipped, adjust the vertical aim by turning the vertical aim screw until the bubble in the vertical aim level (2) is centered at the 0 (zero). Important: Some state and local laws specify requirements for headlamp aim. These laws must be followed.
9. Position the vehicle so that the headlamp aim dots (1) are square with the screen or wall (2).
10. Move the vehicle rearward so that the headlamp aim dots (1) are 7.6 meters (25 feet) away from the screen or the wall (2).
11. Measure the distance (2) from the floor to the headlamp aim dot. Transfer that measurement to the screen or wall (1). Repeat this for both headlamps.
12. Locate the vertical centerline (1) on the screen or wall so that it is in line with the center of the vehicle. This can be accomplished by sighting through the center of the rear window and over the hood.
13. Measure the distance (2) between the right headlamp aim dot and the left headlamp aim dot. Divide the distance in half (3) and transfer that distance to the screen or wall. Repeat this for both headlamps.
14. Measure 267 mm (10.5 in) to the right of the vertical centerline of the headlamp. Transfer that measurement to the screen or wall. Repeat this for both headlamps.
15. Measure 127 mm (5 in) down from the horizontal centerline of the headlamp. Transfer that measurement to the screen or wall. Repeat this for both headlamps. The point at which these measurements intersect should be the center (3) of the headlamp hot spot (2).
16. Turn the headlamps ON.
17. Verify that the edge of the headlamp hot spot (2) is to the right of the vertical centerline and below the horizontal centerline.
18. Verify that the center (3) of the headlamp hot spot (2) is in the proper location. Important: The horizontal aiming of the headlamps must be performed before the vertical aiming to obtain the correct headlamp aim.
19. Adjust the horizontal headlamp aim as necessary, using the horizontal aim screw (1).
20. Adjust the vertical headlamp aim as necessary, using the vertical aim screw (3).

Scheme 324

Scheme 325

Scheme 326

1. Remove the front air deflector.
2. Disconnect the fog lamp electrical connector (2) from the fog lamp (1).
3. Remove the fasteners (3) securing the fog lamp (2) to the fog lamp bracket (1).
4. Remove the fog lamp (2).
5. If the fog lamp bracket requires replacement, remove the front bumper fascia.
6. Remove the fasteners (1) securing the fog lamp bracket (3) to the front impact bar (2).
7. Remove the fog lamp bracket (3).

Scheme 327

Scheme 328

Scheme 329

1. Install the fog lamp bracket (3). NOTE: Refer to «FASTENER NOTICE»(/cadillac/seville/v-1998-2004/remont/oem-general-information/#gm-vehicles-cautions-notices__fastener-notice) .
2. Install the fasteners (1) in order to secure the fog lamp bracket (3) to the front impact bar (2). Tighten Tighten the fog lamp bracket mounting fasteners to 9 N.m (80 lb in).
3. Install the front bumper fascia.
4. Install the fog lamp (2).
5. Install the fasteners (3) in order to secure the fog lamp (2) to the fog lamp bracket (1). Tighten Tighten the fog lamp fasteners to 6 N.m (53 lb in).
6. Connect the fog lamp electrical connector (2) to the fog lamp (1).
7. Install the front air deflector.

Scheme 330

1. Remove the air deflector.
2. Disconnect the electrical connector (3) from the foglamp bulb (2).
3. Turn the fog lamp bulb (2) counter clockwise to disengage it from the fog lamp housing (1).
4. Remove the fog lamp bulb (2) from the fog lamp housing (1).

Scheme 331

1. Install the fog lamp bulb (2) from the fog lamp housing (1).
2. Turn the fog lamp bulb (2) clockwise to engage it into the fog lamp housing (1).
3. Connect the electrical connector (3) to the fog lamp bulb (2).
4. Install the air deflector.

Proper road illumination and safety require the fog lamps to be aimed. The front fog lamp aim should be checked when a new front fog lamp assembly is installed, or if any service repairs have been performed to the vehicle which disturb the front fog lamp mounting or the vehicle ride height.

There are no horizontal adjustments for aiming the front fog lamp assemblies on this vehicle.

Scheme 332

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 (3). Using this measurement, mark the horizontal centerline of the fog lamp (1) on the target screen directly in front of the vehicle. Start the vehicle in order to level the suspension. Remove the front air deflector.
2. Turn the front fog lamps ON.
3. Using a 11 mm socket on the fog lamp vertical adjuster (plastic wingnut), adjust the fog lamp up or down until the top edge of the high intensity zone on the screen is 100 mm (4 in) below the horizontal centerline (2).
4. Turn OFF the front fog lamps.
5. Install the front air deflector.

Scheme 333

1. Remove the front wheelhouse liner.
2. Push on the rear of the lamp assembly towards the front of the vehicle in order to disengage the lamp from the fender.
3. Remove the repeater lamp (2) from the front fender.
4. Disconnect the lamp socket (1) from the repeater lamp (2).

Scheme 334

1. Connect the lamp socket (1) to the repeater lamp (2).
2. Install the repeater lamp (2) to the front fender.
3. Press the rear of the repeater lamp (2) in order to engage the tab with the front fender (1).
4. Install the wheelhouse liner.

Scheme 335

1. Remove the headlamp assembly from the vehicle. Refer to «Headlamp Replacement (SLS, w/o TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamp Replacement (SLS and STS w/TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .
2. Disconnect the electrical connector from the sidemarker bulb.
3. Depress the tang on the side marker lamp socket (1) and rotate it counter clockwise in order to release it from the headlamp assembly (2).
4. Remove the side marker bulb (1) from the headlamp assembly (2).

Scheme 336

1. Install the side marker bulb (1) into the headlamp assembly (2).
2. Turn the side marker lamp socket (1) clockwise in order to secure it to the headlamp assembly (2).
3. Connect the electrical connector to the side marker lamp socket (1).
4. Install the headlamp assembly to the vehicle. Refer to «Headlamp Replacement (SLS, w/o TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamp Replacement (SLS and STS w/TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .

Scheme 337

1. Remove the headlamp assembly. Refer to «Headlamp Replacement (SLS, w/o TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamp Replacement (SLS and STS w/TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .
2. Depress the tang (1) on the park/turn lamp socket (3) and turn it counter clockwise, in order to release it from the headlamp assembly (3).
3. Remove the park/turn lamp socket (3) from the headlamp assembly (2).
4. Remove the park/turn lamp bulb from the socket.

Scheme 338

1. Install the park/turn lamp bulb into the socket.
2. Install the park/turn lamp socket (3) into the headlamp assembly (2).
3. Turn the park/turn lamp socket (3) clockwise to secure it into the headlamp assembly (2).
4. Install the headlamp assembly into the vehicle. Refer to «Headlamp Replacement (SLS, w/o TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamp Replacement (SLS and STS w/TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .

Scheme 339

Scheme 340

1. Remove the headlamp. Refer to «Headlamp Replacement (SLS, w/o TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamp Replacement (SLS and STS w/TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .
2. Press the tang (1) and rotate the cornering lamp socket counter clockwise in order to release it from the headlamp assembly.
3. Remove the socket and the bulb from the headlamp assembly.
4. Remove the bulb from the socket.

Scheme 341

Scheme 342

1. Install the bulb to the socket.
2. Install the socket with the bulb to the headlamp assembly.
3. Turn the cornering lamp socket (1) clockwise in order to secure it into the headlamp assembly.
4. Install the headlamp assembly. Refer to «Headlamp Replacement (SLS, w/o TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) or «Headlamp Replacement (SLS and STS w/TT6, TT7 or TT8)»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .

Scheme 343

Scheme 344

1. Open the rear compartment lid.
2. Remove the rear compartment lid trim.
3. Remove the backup lamp. Refer to «Backup Lamp Replacement»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .
4. Disconnect the high mounted stop lamp connector (5) from the wiring harness.
5. Press the grommet (4) through the opening in order to remove the wiring harness from the rear compartment lid (3).
6. Remove the fasteners (2) securing the high mounted stop lamp panel (1) to the rear compartment lid (3).
7. Pull the high mounted stop lamp panel (1) downward in order to disengage the panel from the rear compartment lid (3).
8. Remove the high mounted stop lamp panel (1) and place it face down on a clean protective surface.
9. Remove the fasteners (1) securing the high mounted stop lamp (2) to the filler panel (3).

Scheme 345

Scheme 346

Scheme 347

1. Install the fasteners (1) in order to secure the high mounted stop lamp (2) to the filler panel (3). Tighten Tighten the high mounted stop lamp fasteners to 2 N.m (18 lb in).
2. Inspect the rear compartment lid (2) to ensure that the upper retainers (1) and the lower retainers (3) are present. If the retainers are damaged they should be replaced.
3. Position the high mounted stop lamp panel (1) in order to allow the high mounted stop lamp connector (5) and the grommet (4) to pass through the rear compartment lid (3). Ensure that the grommet (4) is fully seated in the rear compartment lid (3). Connect the high mounted stop lamp connector (5) with the wiring harness.
4. Position the high mounted stop lamp panel (1) on the rear compartment lid (3) and press the panel upwards in order to engage the locator tabs.
5. Install the fasteners (2) in order to secure the high mounted stop lamp panel (1) to the rear compartment lid (3). Tighten Tighten the high mounted stop lamp panel fasteners to 2 N.m (18 lb in).
6. Install the backup lamp. Refer to «Backup Lamp Replacement»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .
7. Install the rear compartment lid trim.
8. Close the rear compartment lid.

Scheme 348

1. Open the rear compartment lid.
2. Remove the rear compartment lid trim.
3. Pull back on rear compartment trim panel.
4. Disconnect the backup lamp connector (5) from the rear compartment lid wiring harness.
5. Press the grommet (3) out of the rear compartment lid.
6. Remove the fasteners (4) securing the backup lamp (1) to the rear compartment lid (2).
7. Remove the backup lamp (1) from the rear compartment lid (2).

Scheme 349

1. Route the backup lamp connector (5) and the grommet (3) through the rear compartment lid (2).
2. Install the backup lamp (1) to the rear compartment lid (2).
3. Install the fasteners (1) in order to secure the backup lamp (1) to the rear compartment lid (2). Tighten Tighten the fasteners to 4.5 N.m (40 lb in).
4. Verify that the grommet (3) is fully seated in the rear compartment lid (2).
5. Connect the backup lamp connector (5) to the rear compartment lid wiring harness.
6. Install the rear compartment lid trim.
7. Close the rear compartment lid.

Scheme 350

Scheme 351

1. Remove the back up lamp from the vehicle. Refer to «Backup Lamp Replacement»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .
2. Remove the license lamp sockets (1) from the back up lamp.
3. Remove the license lamp bulb from the license lamp socket.

Scheme 352

Scheme 353

1. Install the license lamp bulb into the license lamp socket.
2. Install the license lamp sockets (1) into the back up lamp.
3. Install the back up lamp to the vehicle. Refer to «Backup Lamp Replacement»(/cadillac/seville/v-1998-2004/remont/exterior-lights/#lighting-systems) .

Scheme 354

1. Open the rear compartment lid.
2. Remove the left or right rear compartment side trim.
3. Disconnect the taillamp connector (3).
4. Press the grommet (2) out of the rear compartment.
5. Remove the fasteners (5) securing the tail lamp (1) to the body.
6. Remove the taillamp (1) from the body.

Scheme 355

1. Route the taillamp connector (3) and the grommet (2) through the body.
2. Verify that the grommet (2) is fully seated in the body.
3. Install the taillamp (1) to the body.
4. Install the fasteners (5) in order to secure the taillamp (1) to the body. Tighten Tighten the fasteners to 4.5 N.m (40 lb in).
5. Connect the taillamp connector (3).
6. Install the rear compartment side trim.
7. Close the rear compartment lid.

Scheme 356

1. Open the rear compartment lid.
2. Remove the rear compartment sill plate.
3. Pull back on the rear compartment trim panel.
4. Disconnect the tail lamp connector (3).
5. Press the grommet (2) out of the rear compartment.
6. Remove the nuts (5) retaining the tail lamp (1) to the body.
7. Remove the tail lamp (1) from the body.

Scheme 357

1. Route the tail lamp connector (3) and the grommet (2) through the body.
2. Verify that the grommet (2) is fully seated in the body.
3. Install the tail lamp (1) to the body.
4. Install the nuts (5) that retain the tail lamp (1) to the body. Tighten Tighten the nuts to 4.5 N.m (40 lb in).
5. Connect the tail lamp connector (3).
6. Install the rear compartment sill plate.
7. Close the rear compartment lid.

Scheme 358

Scheme 359

1. Open the hood.
2. Disconnect the underhood lamp connector (3) from the underhood lamp (1). CAUTION: Eye protection must be worn when drilling rivets to reduce the chance of personal injury.
3. Remove the rivets securing the underhood lamp (1) to the hood (2).
4. Remove the underhood lamp (1).

Scheme 360

Scheme 361

1. Install the underhood lamp (1) to the hood (2).
2. Install the rivets (3) in order to secure the underhood lamp (1) to the hood (2).
3. Connect the underhood lamp electrical connector (3) to the underhood lamp (1).
4. Close the hood.

1. Insert a flat bladed tool (2) into the access slot of the door lamp lens (1) in order to release the door lamp lens from the door trim panel.
2. Remove the door lamp bulb from the door lamp bulb socket.

Scheme 362

1. Install the door lamp bulb into the door lamp socket.
2. Install the door lamp lens into the door panel by simply applying pressure until it is secured into the door trim panel.

Scheme 363

Scheme 364

1. Open the instrument panel storage compartment door in order to gain access to the instrument panel storage compartment lamp.
2. Pry on the outer end of the instrument panel storage compartment lamp in order to remove it from the instrument panel storage compartment.
3. Remove the push in bulb from the instrument panel storage compartment lamp.

Scheme 365

1. Install the push in bulb into the instrument panel storage compartment lamp.
2. Push the instrument panel storage compartment lamp into the instrument panel storage compartment.
3. Close the instrument panel storage compartment door.

Scheme 366

Scheme 367

1. Remove the windshield pillar garnish molding.
2. Remove the center pillar garnish molding.
3. Remove the sail panel.
4. Remove the assist handle. NOTE: Use care when removing or installing the headliner. Excessive bending will damage the headliner.
5. Lower the headliner in order to access the rear quarter lamp electrical connector (1). Important: The electrical connector for the rear interior lamp is glued to the headliner. The electrical connector will need to reattached to the headliner, after repairs are completed, in order to ensure the connector does not rattle.
6. Carefully release the electrical connector (1) from the headliner.
7. Disconnect the rear quarter lamp electrical connector (1).
8. Carefully pull on the outboard edge of the rear quarter lamp bezel in order to release the two quarter lamp bezel clips.
9. Rotate the rear quarter lamp switch (1) counter clockwise in order to release the rear quarter lamp switch from the lamp bezel (2).
10. Remove the quarter lamp switch (1).

Scheme 368

Scheme 369

1. Install the rear quarter lamp switch (1) to the rear quarter lamp bezel (2).
2. Rotate the rear quarter lamp switch (1) in order to position the rear quarter lamp switch wiring facing the outboard side of the quarter lamp switch bezel (2).
3. Install the rear quarter lamp switch button to the rear quarter lamp assembly.
4. Hook the inboard edge of the rear quarter lamp bezel (2) to the inboard edge of the headliner.
5. Align the rear quarter lamp bezel clips to the bulb fixture and snap the rear quarter lamp bezel (2) into place in order to engage the trim clips.
6. Connect the rear quarter lamp switch (2) electrical connector (1). Important: The electrical connector will need to be reattached to the headliner, after repairs are completed, in order to ensure the electrical connector does not rattle.
7. Reattach the electrical connector (1) to the headliner.
8. Install the assist handle.
9. Install the sail panel.
10. Install the center pillar garnish molding.
11. Install the windshield pillar garnish molding.

Scheme 370

1. Using a small-bladed tool, release the lower tab from the rear quarter courtesy lamp bezel.
2. Remove the rear quarter courtesy lamp bezel in order to gain access to the bulb.
3. Remove the bulb for replacement.
4. Remove the rear quarter courtesy lamp bezel by pulling the wiring harness out from behind the headliner enough to disconnect the electrical connector.
5. Partially lower the headliner in order to gain access to the rear quarter courtesy lamp body.
6. Careful pry the rear quarter courtesy lamp body away from the roof rail pocket with a flat-bladed tool.
7. Release the 2 retainer clips.
8. Pull the rear quarter courtesy lamp body out far enough in order to disconnect the electrical connector.
9. Remove the rear quarter courtesy lamp body.

Scheme 371

1. Connect the electrical connector.
2. Install the rear quarter courtesy lamp body into the roof rail pocket.
3. Push inward in order to engage the retainers.
4. Install headliner.
5. Connect the rear quarter courtesy lamp switch electrical connector.
6. Install the rear quarter courtesy lamp bezel.
7. Install the bottom tab of the rear quarter courtesy lamp bezel first.
8. Engage the top of the rear quarter courtesy lamp bezel.

Scheme 372

1. Open the vanity cover (1) and, using a thin-bladed tool, insert the edge of the tool under the lamp lens (3).
2. Carefully snap the lamp lens out of the retaining slots.
3. Remove the bulb.

Scheme 373

1. Insert the bulb into the socket.
2. Install the lens (3) into the retaining slots.

Scheme 374

Scheme 375

1. Remove the console center trim plate.
2. Rotate the shift indicator lamp socket (1) counter clockwise in order to release the lamp and socket (1) from the shifter assembly.
3. Remove the lamp and socket (1) from the shifter assembly.
4. Remove the shift indicator lamp (1) from the lamp socket.

Scheme 376

1. Install the shift indicator lamp (1) to the lamp socket.
2. Install the lamp and socket to the shifter assembly.
3. Rotate the shift indicator lamp socket clockwise.
4. Install the console center trim plate.

Scheme 377

Scheme 378

1. Remove the overhead console.
2. Remove the three screws from the lamp retainer. Important: Care should be taken when rotating the lamp retainer not to snag or rip the flat wire harness.
3. Rotate the lamp retainer from right to left.
4. Replace the inoperative bulb.

Important: Care should be taken when rotating the lamp retainer not to snag or rip the flat wire harness.

Scheme 379

1. Rotate the lamp retainer back into place.
2. Install the three fasteners fully driven, seated, but not stripped.
3. Install the overhead console.

Scheme 380

1. Open the rear compartment.
2. Remove the rear compartment lamp by using a small flat-bladed tool.
3. Disconnect the electrical connector.
4. Pull the bulb from the socket.

Scheme 381

1. Install the bulb into the socket.
2. Connect the electrical connector.
3. Install the rear compartment lamp by pressing into place until fully seated.
4. Close the rear compartment.

Fastener Tightening Specifications

Identifying Fastener Tightening Specifications

Scheme 382

Scheme 383

Scheme 384

Scheme 385

Scheme 386

Scheme 387

Scheme 388

Scheme 389

Scheme 390

Scheme 391

Scheme 392

Scheme 393

Scheme 394

Scheme 395

Scheme 396

Scheme 397

Scheme 398

Scheme 399

Scheme 400

Scheme 401

Scheme 402

Scheme 403

Scheme 404

Scheme 405

Scheme 406

See also:
• TESTING WIRING SYSTEMS FOR INTERMITTENT & POOR CONNECTIONS
• INSTRUMENT PANEL CLUSTER
• HVAC MODULE ASSEMBLY
• FASTENER NOTICE
• Diagnostic System Check - Lighting Systems