Overview
The interior lighting system consists of
- Courtesy lamps
- Demand lamps
- Ambient lighting (if equipped)
The courtesy lamps subsystem consists of
- interior lamps
- puddle lamps
- door ajar switches (integrated into the door latches)
- liftgate ajar switch (manual liftgate)
- LTM (power liftgate)
- courtesy lamp switch (integrated into the FLM)
- BCM
The courtesy lamps provide illumination to the interior of the vehicle when entering or exiting the vehicle or when requested using the courtesy lamp switch.
The demand lamps subsystem consists of
- interior lamps
- vanity mirror lamps
- BCM
The demand lamps are used to provide illumination to specific areas within the vehicle, such as a map/reading lamp or vanity mirror. The BCM energizes the battery saver relay to supply voltage to the demand lamps when the battery saver feature is not active.
The ambient lighting subsystem consists of
- ambient lighting harnesses
- HVAC module
- APIM
The ambient lighting provides aesthetically colored illumination to the center console cup holders, the door map pockets, the door pull handles, the door release handles, and the front and rear footwells for illuminated entry or when the ignition is in run with the parking lamps on. The ambient lighting is controlled using the touchscreen display in the center of the instrument panel.
Scheme 1
Normal Operation and Fault Conditions
REFER to Courtesy Lamps .
REFER to Courtesy Lamps .
REFER to Courtesy Lamps .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1313:11 | Interior Lighting Output: Circuit Short To Ground | Sets when the BCM detects a short to ground from the courtesy lighting output circuit. |
| B1313:15 | Interior Lighting Output: Circuit Short To Battery or Open | Sets when the BCM detects an open from the courtesy lighting output circuit. |
DTC FAULT TRIGGER CONDITIONS
REFER to Courtesy Lamps .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B12C2:11 | Puddle Lamp: Circuit Short To Ground | Sets when the BCM detects a short to ground from the puddle lamp output circuit. |
DTC FAULT TRIGGER CONDITIONS
REFER to Courtesy Lamps .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1175:01 | Drivers Door Ajar Switch: General Electrical Failure | Sets when the BCM detects an open from the left front door ajar circuit. |
| B1176:01 | Passenger Door Ajar Switch: General Electrical Failure | Sets when the BCM detects an open from the right front door ajar circuit. |
| B11C0:01 | Driver Side Rear Door Ajar Switch: General Electrical Failure | Sets when the BCM detects an open from the left rear door ajar circuit. |
| B11C1:01 | Passenger Side Rear Door Ajar Switch: General Electrical Failure | Sets when the BCM detects an open from the right rear door ajar circuit. |
| B1306:01 | Liftgate Ajar Switch: General Electrical Failure | Sets when the BCM detects an open from the liftgate ajar circuit. |
| B2718 | Liftgate/Decklid Ajar Output Short to Battery | Sets when the LTM detects a short to voltage from the liftgate ajar circuit to the BCM. |
| B2721 | Liftgate/Decklid Ajar Output Short to Ground or Open | Sets when the LTM detects an open from the liftgate ajar circuit to the BCM. |
DTC FAULT TRIGGER CONDITIONS
REFER to Courtesy Lamps .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B1313:15 | Interior Lighting Output: Circuit Short To Battery or Open | Sets when the BCM detects a short to voltage from the courtesy lighting output circuit. |
DTC FAULT TRIGGER CONDITIONS
REFER to Courtesy Lamps .
REFER to Demand Lamps .
REFER to Battery Saver .
REFER to Demand Lamps .
REFER to Ambient Lighting .
REFER to Ambient Lighting .
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| B127C:11 | Ambient Lighting Zone 2 Output Red LED: Circuit Short To Ground | Sets when the HVAC module detects a short to ground from a red ambient lighting output circuit. |
| B127C:12 | Ambient Lighting Zone 2 Output Red LED: Circuit Short To Battery | Sets when the HVAC module detects a short to voltage from a red ambient lighting output circuit. |
| B127C:13 | Ambient Lighting Zone 2 Output Red LED: Circuit Open | Sets when the HVAC module detects an open from a red ambient lighting output circuit. |
| B127F:11 | Ambient Lighting Zone 2 Output Green LED: Circuit Short To Ground | Sets when the HVAC module detects a short to ground from a green ambient lighting output circuit. |
| B127F:12 | Ambient Lighting Zone 2 Output Green LED: Circuit Short To Battery | Sets when the HVAC module detects a short to voltage from a green ambient lighting output circuit. |
| B127F:13 | Ambient Lighting Zone 2 Output Green LED: Circuit Open | Sets when the HVAC module detects an open from a green ambient lighting output circuit. |
| B1282:11 | Ambient Lighting Zone 2 Output Blue LED: Circuit Short To Ground | Sets when the HVAC module detects a short to ground from a blue ambient lighting output circuit. |
| B1282:12 | Ambient Lighting Zone 2 Output Blue LED: Circuit Short To Battery | Sets when the HVAC module detects a short to voltage from a blue ambient lighting output circuit. |
| B1282:13 | Ambient Lighting Zone 2 Output Blue LED: Circuit Open | Sets when the HVAC module detects an open from a blue ambient lighting output circuit. |
DTC FAULT TRIGGER CONDITIONS
See also:
• OEM FUSE AND RELAY INFORMATION