Interior Lighting System: Other Ford Escape III

Network Message Chart

MODULE NETWORK INPUT MESSAGES - BCM

MODULE NETWORK INPUT MESSAGES - DDM AND PDM

Battery Saver

Note. Time-out is 10 seconds if the vehicle is in factory mode or 0 seconds if the vehicle is in Transport mode.

The BCM provides automatic shut-off of the courtesy and demand lamps after a time-out period when the ignition is OFF. A timer in the BCM starts when

1. the ignition transitions to OFF.
2. any door becomes ajar while the ignition is OFF.
3. an UNLOCK button of the RKE transmitter is pressed.
4. a valid keypad code is entered while the ignition is OFF.
5. a door is unlocked using a key.
6. the door lock switch is pressed.

When 10 minutes have elapsed (30 minutes for demand lamps), the BCM automatically shuts off voltage to the lamps. The timer restarts (voltage is restored if the BCM is in battery saver mode) if

1. the ignition transitions out of OFF.
2. any door or the liftgate becomes ajar.
3. the unlock button of the RKE transmitter is pressed.
4. a valid keypad code is entered.
5. a door is unlocked using a key.
6. the door lock switch is pressed.

Courtesy Lamps

The BCM controls all interior lighting functions and timing by monitoring inputs from the

1. Door or liftgate ajar switches
2. Ignition state
3. Instrument panel dimmer switch
4. RKE system

For vehicles equipped with puddle lamps, the DDM and the PDM provide voltage to the left and right puddle lamps based on messaged input from the BCM over the MS-CAN.

The BCM sends a signal to each door or liftgate ajar switch. When the doors or liftgate are closed, the circuit is switched to ground and the voltage is pulled low, indicating closed doors.

For vehicles equipped with door modules, each door module provides ground for the door ajar switch.

The BCM monitors the ignition state and inputs from the RKE system to determine when to energize the interior light relay. When the interior light relay is energized, voltage is provided to the interior lamps. The BCM controls the ground side of the courtesy lamps for the illuminated entry and exit features.

For keyless entry, the BCM monitors input from the RKE transmitter (directly from the IKTs on vehicles without IA) or from the RFA module (on vehicles with IA) to determine when to activate/deactivate the illuminated entry and exit functions.

The interior courtesy lamps can also be activated from the courtesy lamp switch mounted on the front/driver interior lamp. The front interior lamp (vehicles without a roof opening panel) or the driver interior lamp (vehicles with a roof opening panel) controls the courtesy lamp function of the remaining interior lamp(s). When the courtesy lamp button is pressed on the front/driver interior lamp, the courtesy lamp function for all the lamps is turned on/off. If any door is open, the BCM command overrides the function of the front/driver courtesy lamp switch and activates the courtesy lamps.

Illuminated Entry and Exit

The illuminated entry requests the dimmable backlighting, the parking lamps and the courtesy lamps to illuminate when the ignition is OFF and a door is opened, the RKE transmitter unlock button is pressed, or the vehicle is unlocked using the keyless entry keypad. If no doors are open, the illuminated entry requests the lamps off after 25 seconds have elapsed, the ignition is transitioned out of OFF, the RKE transmitter lock button is pressed, or the vehicle is locked using the keyless entry keypad.

Note. The BCM determines which actions take precedence over others (for example, an open door keeps the courtesy lamps on even when a command to lock the doors is received).

Demand Lamps

When the BCM is not in battery saver mode, the interior light relay is energized to provide voltage to the demand lamps.

Ambient Lighting

The ambient lighting subsystem consists of the ambient lighting switch, dimmer control and the ambient lighting module (all integrated into the overhead console), and the LEDs located within the floor console, front door panels and under the instrument panel footwell areas. The ambient lighting is operational when the ignition is in any state other than OFF (the exception is when it is used in conjunction with the illuminated entry/exit features), the headlamps are on and the outside ambient light level is low. The ambient lighting switch cycles the LEDs through 7 different color combinations. The brightness is changed using the dimmer control which allows the LEDs to be turned off as well.

The right search mode control switch activates all ambient light areas and all dome lamps. The search mode control switch needs to be pressed again to deactivate the dome lamps and return to the previously selected ambient light color.

The ambient lighting LEDs provide illumination to the

1. Cup holders (located in the center console)
2. Front footwells (located under the instrument panel)
3. Rear footwells (located in the rear of the center console)
4. Front inside pull handles (located in each door trim panel)
5. Front door map pockets (located in each door trim panel)

The ambient lighting module controls the color and light intensity. The ambient lighting module receives information from the BCM through a LIN circuit for illuminated entry/exit functions. The ambient lighting module provides voltage to all of the LEDs. A secondary LIN circuit is routed from the ambient lighting module to all of the LEDs. Each LED changes color and intensity based on the input from the ambient lighting module.

As an additional function, the ambient lighting illuminates red on any open door.

Door Ajar Switch

Each door ajar switch (ground switch) receives a voltage signal from the BCM on independent circuits. When the door is closed, the door ajar switch is closed, routing the signal to ground. When the door is opened, the door ajar switch opens.

For vehicles equipped with one-touch up/down window function, ground is provided to the door ajar switches from the door modules.

Interior Lamp

All of the interior lamps receive voltage from the interior lamp relay (integrated into the BCM) when the battery saver feature is not active. This is used by each interior lamp to power the LED within it when the switch on the lamp is turned on.

The front/driver interior lamp receives voltage from the BCM when the courtesy lamps are activated and no voltage when deactivated. The front/driver interior lamp then sends a message over a LIN circuit to the remaining lamps to activate or deactivate them.

Possible Sources

1. Wiring, terminals or connectors
2. Door latch
3. BCM

Scheme 3

1. A1 CHECK THE OPERATION OF THE COURTESY LAMP FUNCTION FROM THE FRONT/DRIVER INTERIOR LAMP Ignition OFF. Using the courtesy lamp switch on the front/driver interior lamp, activate the overhead courtesy lamps. Do the overhead courtesy lamps illuminate? Yes: GO to A2. No: GO to «PINPOINT TEST B»(ref-569638-S18956305362013072700000).
2. A2 CHECK THE DOOR AJAR SWITCH OPERATION Deactivate the overhead courtesy lamps from the front/driver interior lamp. Disconnect: Suspect Door Latch. Do the courtesy lamps illuminate? Yes: INSTALL a new door latch in question. REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS - WITH WINDOW ONE-TOUCH UP»(ref-569610). No: GO to A3.
3. A3 CHECK THE SUSPECT DOOR AJAR SWITCH CIRCUIT FOR A SHORT TO GROUND Disconnect: BCM C2280B. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Front Door Ajar Switch C525-3 CPL26 (BK) - Ground RH Front Door Ajar Switch C609-6 CPL31 (BK) - Ground LH Rear Door Ajar Switch C705-3 CPL36 (GN) - Ground RH Rear Door Ajar Switch C805-6 CPL39 (YE) - Ground see scheme 1: Identifying Door/Ajar Switch Connector Terminals Is the resistance greater than 10, 000 ohms? Yes: GO to A4. No: REPAIR the circuit.
4. A4 CHECK FOR CORRECT BCM OPERATION Disconnect and inspect all the BCM connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Reconnect the BCM connectors. Make sure they seat and latch correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: CHECK On-Line Automotive Service Information System (OASIS) for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new BCM. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-569586). No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

1. BCM fuse 60 (10A)
2. Wiring, terminals or connectors
3. Interior lamp
4. BCM

Scheme 4

Scheme 5

Scheme 6

Scheme 7

Scheme 8

Scheme 9

Scheme 10

Scheme 11

Scheme 12

Scheme 13

Scheme 14

Scheme 15

Scheme 16

Scheme 17

Scheme 18

Scheme 19

1. B1 CHECK THE DOOR AJAR PIDS Ignition ON. Using a scan tool, view the BCM PIDs. Monitor the BCM PIDs (DOOR_SW_LR, DOOR_SW_PSGR, DOOR_SW_LR and DOOR_SW_RR) while opening and closing all the doors. Do all the door ajar switch PID values agree with the door positions? Yes: GO to B2. No: GO to «PINPOINT TEST A»(ref-569638-S25129809542013072700000).
2. B2 CHECK THE OPERATION OF ALL THE INTERIOR COURTESY LAMPS Open a door and observe the interior courtesy lamps. Are all the interior courtesy lamps inoperative? Yes: VERIFY the BCM fuse 60 (10A) is OK. If OK, GO to B3. If not OK, REFER to the appropriate «SYSTEM WIRING DIAGRAMS»(ref-541395) to identify the possible causes of the circuit short. No: If all of the overhead courtesy lamps are inoperative, GO to B3. If both footwell lamps are inoperative, GO to B8. If only the front interior lamp is inoperative (without a roof opening panel), INSTALL a new interior lamp. REFER to «INTERIOR LAMP»(ref-569638-S41539386632013072700000). If only the LH front interior lamp is inoperative (with a roof opening panel), INSTALL a new interior lamp. REFER to «INTERIOR LAMP»(ref-569638-S41539386632013072700000). If an individual footwell lamp is inoperative (without ambient lighting), GO to B9. If the rear or luggage area lamp (without a roof opening panel) is inoperative, GO to B9. If the RH front, a rear or luggage area lamp (with a roof opening panel) is inoperative, GO to B9. If the RH front, and rear lamps (with a roof opening panel) are all inoperative, GO to B12.
3. B3 CHECK FOR VOLTAGE TO THE FRONT/DRIVER COURTESY LAMP Close the door. Ignition OFF. Disconnect: LH Front Interior Lamp C908 (with a roof opening panel). Disconnect: Front Interior Lamp C931 (without a roof opening panel). Ignition ON. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit Front Interior Lamp C931-1 CBP60 (YE/VT) - Ground LH Front Interior Lamp C908-1 CBP60 (YE/VT) - Ground (Scheme 3): Identifying Interior/Map Lamps Assembly (C908 Or C931) Connector Terminals Is the voltage greater than 11 volts? Yes: GO to B5. No: GO to B4.
4. B4 BYPASS THE BCM (INTERIOR LIGHT RELAY) Ignition OFF. Connect: LH Front Interior Lamp C908 (with a roof opening panel). Connect: Front Interior Lamp C931 (without a roof opening panel). Disconnect: BCM C2280F. Connect a fused jumper wire between: Lead 1 Lead 2 Pin Circuit Pin Circuit C2280F-12 CBP60 (YE/VT) Battery positive post - (Scheme 4): Identifying BCM Connector C2280F Terminals Ignition ON. Open any door. Do the courtesy lamps illuminate? Yes: REMOVE the jumper wire. GO to B18. No: REMOVE the jumper wire. REPAIR the courtesy lamp voltage supply circuit for an open.
5. B5 CHECK THE FRONT/DRIVER COURTESY LAMP GROUND CIRCUIT FOR AN OPEN Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit Front Interior Lamp C931-1 CBP60 (YE/VT) C931-5 GD138 (BK/WH) LH Front Interior Lamp C908-1 CBP60 (YE/VT) C908-5 GD908 (BK/WH) (Scheme 5): Identifying Interior/Map Lamp Connector Terminals Is the voltage greater than 11 volts? Yes: GO to B6. No: REPAIR the circuit.
6. B6 BYPASS THE BCM DIMMING CONTROL Ignition OFF. Connect: LH Front Interior Lamp C908 (with a roof opening panel). Connect: Front Interior Lamp C931 (without a roof opening panel). Disconnect: BCM C2280H. Connect a fused jumper wire between: Lead 1 Lead 2 Pin Circuit Pin Circuit With Roof Opening Panel C2280H-11 VLN33 (GY/VT) Battery positive post - Without Roof Opening Panel C2280H-11 CLN27 (WH/BN) Battery positive post - (Scheme 6): Identifying BCM Connector C2280H Terminals Ignition ON. Open any door. Do the courtesy lamps illuminate? Yes: REMOVE the jumper wire. GO to B18. No: LEAVE the jumper wire connected. GO to B7.
7. B7 CHECK THE COURTESY LAMP GROUND CONTROLLED CIRCUIT FOR AN OPEN Disconnect: LH Front Interior Lamp C908 (with a roof opening panel). Disconnect: Front Interior Lamp C931 (without a roof opening panel). Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit Front Interior Lamp C931-1 CBP60 (YE/VT) C931-5 GD138 (BK/WH) LH Front Interior Lamp C908-1 CBP60 (YE/VT) C908-5 GD908 (BK/WH) (Scheme 7): Identifying Interior/Map Lamp Connector Terminals Is the voltage greater than 11 volts? Yes: REMOVE the jumper wire. INSTALL a new interior lamp. REFER to «INTERIOR LAMP»(ref-569638-S41539386632013072700000). No: REMOVE the jumper wire. REPAIR the circuit.
8. B8 CHECK THE FOOTWELL LAMP GROUND CONTROLLED CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: BCM C2280C. Connect a fused jumper wire between: Lead 1 Lead 2 Pin Circuit Pin Circuit C2280C-21 VLN33 (GY/VT) - Ground (Scheme 8): Identifying BCM Connector C2280H Terminals Ignition ON. Do the footwell lamps illuminate? Yes: REMOVE the jumper wire. GO to B18. No: REMOVE the jumper wire. REPAIR the circuit.
9. B9 CHECK FOR VOLTAGE TO THE INOPERATIVE INTERIOR COURTESY LAMP Ignition OFF. Disconnect: Inoperative Interior Lamp. Ignition ON. For footwell or luggage area lamps, measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Front Footwell Lamp C2056-1 CBP60 (YE/VT) - Ground RH Front Footwell Lamp C2057-1 CBP60 (YE/VT) - Ground Luggage Area Lamp C4403-1 CBP60 (YE/VT) - Ground (Scheme 9): Identifying Footwell Or Luggage Area Lamp Connector Terminals For overhead lamps (without roof opening panel), measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C901-1 CBP60 (YE/VT) - Ground (Scheme 10): Identifying Interior/Map Lamp Connector Terminals For overhead lamps (with roof opening panel), measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit RH Front Lamp C903-1 CBP60 (YE/VT) - Ground LH Rear Lamp C963-1 CBP60 (YE/VT) - Ground RH Rear Lamp C964-1 CBP60 (YE/VT) - Ground (Scheme 11): Identifying Interior/Map Lamp Connector Terminals Is the voltage greater than 11 volts? Yes: GO to B10. No: REPAIR the courtesy lamp voltage supply circuit for an open.
10. B10 CHECK THE COURTESY LAMP GROUND CIRCUIT FOR AN OPEN For footwell or luggage area lamps, measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Front Footwell Lamp C2056-1 CBP60 (YE/VT) C2056-3 VLN33 (GY/VT) RH Front Footwell Lamp C2057-1 CBP60 (YE/VT) C2057-3 VLN33 (GY/VT) Luggage Area Lamp C4403-1 CBP60 (YE/VT) C4403-3 VLN33 (GY/VT) (Scheme 12): Identifying Footwell Or Luggage Area Lamp Connector Terminals For overhead lamps (without roof opening panel), measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C901-1 CBP60 (YE/VT) C901-4 VLN04 (YE/BU) (Scheme 13): Identifying Interior/Map Lamp Connector Terminals For overhead lamps (with roof opening panel), measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit RH Front Lamp C903-1 CBP60 (YE/VT) C903-5 GD908 (BK/WH) LH Rear Lamp C963-1 CBP60 (YE/VT) C963-5 GD908 (BK/WH) RH Rear Lamp C964-1 CBP60 (YE/VT) C964-5 GD908 (BK/WH) (Scheme 14): Identifying Overhead Lamp Connector Terminals (With Roof Opening Panel) Is the voltage greater than 11 volts? Yes: For the rear lamp (without roof opening panel), the luggage area lamp or a footwell lamp, INSTALL a new lamp. REFER to «INTERIOR LAMP»(ref-569638-S41539386632013072700000). For any overhead interior lamp (with roof opening panel), GO to B11. No: REPAIR the circuit.
11. B11 CHECK THE PASSENGER/REAR LAMP CONTROL CIRCUIT FOR REFERENCE VOLTAGE Open any door. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit RH Front Lamp C903-6 VLN36 (GY/OG) - Ground LH Rear Lamp C963-6 VLN36 (GY/OG) - Ground RH Rear Lamp C964-6 VLN36 (GY/OG) - Ground (Scheme 15): Identifying Interior/Map Lamp Connector Terminals Is the voltage between 4 and 6 volts? Yes: INSTALL a new interior lamp in question. REFER to «INTERIOR LAMP»(ref-569638-S41539386632013072700000). No: GO to B12.
12. B12 CHECK THE LAMP CONTROL CIRCUIT FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect: LH Front Interior Lamp C908 and RH Front Interior Lamp C903. Disconnect: LH Rear Interior Lamp C963 and RH Rear Interior Lamp C964. Ignition ON. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C908-6 VLN36 (GY/OG) - Ground (Scheme 16): Identifying Interior/Map Lamp Connector Terminals Is any voltage present? Yes: REPAIR the circuit. No: GO to B13.
13. B13 CHECK THE LAMP CONTROL CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C908-6 VLN36 (GY/OG) - Ground (Scheme 17): Identifying Interior/Map Lamp Connector Terminals Is the resistance greater than 10, 000 ohms? Yes: GO to B14. No: REPAIR the circuit.
14. B14 CHECK THE LAMP CONTROL CIRCUIT FOR AN OPEN Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C908-6 VLN36 (GY/OG) C903-6 VLN36 (GY/OG) (Scheme 18): Identifying LH Front Interior Lamp Connector C908 Terminals Is the resistance less than 3 ohms? Yes: GO to B15. No: REPAIR the circuit.
15. B15 ISOLATE THE PASSENGER INTERIOR LAMP Close the door. Connect: LH Front Interior Lamp C908. Connect: LH Rear Interior Lamp C963 and RH Rear Interior Lamp C964. Open any door. Do the rear interior lamps illuminate? Yes: INSTALL a new RH front interior lamp. REFER to «INTERIOR LAMP»(ref-569638-S41539386632013072700000). No: GO to B16.
16. B16 ISOLATE THE LH REAR INTERIOR LAMP Close the door. Connect: RH Front Interior Lamp C903. Disconnect: LH Rear Interior Lamp C963. Open any door. Does the passenger interior lamp illuminate? Yes: INSTALL a new LH rear interior lamp. REFER to «INTERIOR LAMP»(ref-569638-S41539386632013072700000). No: GO to B17.
17. B17 ISOLATE THE RH REAR INTERIOR LAMP Close the door. Connect: LH Rear Interior Lamp C963. Disconnect: RH Rear Interior Lamp C964. Open any door. Does the passenger interior lamp illuminate? Yes: INSTALL a new RH rear interior lamp. REFER to «INTERIOR LAMP»(ref-569638-S41539386632013072700000). No: INSTALL a new LH front interior lamp. REFER to «INTERIOR LAMP»(ref-569638-S41539386632013072700000).
18. B18 CHECK FOR CORRECT BCM OPERATION Disconnect and inspect all the BCM connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Reconnect the BCM connectors. Make sure they seat and latch correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: CHECK On-Line Automotive Service Information System (OASIS) for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new BCM. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-569586). No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

1. Wiring, terminals or connectors
2. Puddle lamp
3. Exterior mirror
4. DDM
5. PDM

Scheme 20

Scheme 21

Scheme 22

Scheme 23

1. C1 CHECK THE OPERATION OF THE INTERIOR COURTESY LAMPS Ignition ON. Ignition OFF. Open and close a door. Observe the interior courtesy lamp operation for 30 seconds. Do the interior courtesy lamps operate correctly? Yes: If a puddle lamp is always on, GO to C2. If a puddle lamp is inoperative, GO to C3. No: If the interior courtesy lamps are always on, GO to «PINPOINT TEST D»(ref-569638-S15042302872013072700000). If the interior courtesy lamps are inoperative, GO to «PINPOINT TEST A»(ref-569638-S25129809542013072700000).
2. C2 CHECK THE PUDDLE LAMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE Disconnect: DDM C501B (left puddle lamp). Disconnect: PDM C652B (right puddle lamp). Ignition ON. Does the puddle lamp continue to illuminate? Yes: REPAIR circuit CLN31 (VT/GN) (left puddle lamp) or CLN32 (BN/YE) (right puddle lamp). No: INSTALL a new door module in question. REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS - WITH WINDOW ONE-TOUCH UP»(ref-569610).
3. C3 CHECK THE MIRROR OPERATION Ignition ON. Using the exterior mirror control switch, operate the exterior power mirrors. Do the exterior power mirrors operate? Yes: GO to C4. No: REFER to «REAR VIEW MIRRORS - WITH WINDOW ONE-TOUCH UP»(ref-569645).
4. C4 CHECK FOR VOLTAGE TO THE PUDDLE LAMP Ignition OFF. Disconnect: LH Exterior Mirror C521 or RH Exterior Mirror C601. Ignition ON. Open any door. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Exterior Mirror C521-5 CLN31 (VT/GN) - Ground RH Exterior Mirror C601-5 CLN32 (BN/YE) - Ground (Scheme 19): Identifying Exterior Mirror Connector Terminals Is the voltage greater than 11 volts? Yes: GO to C7. No: GO to C5.
5. C5 CHECK THE PUDDLE LAMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Disconnect: DDM C501B (left puddle lamp). Disconnect: PDM C652B (right puddle lamp). Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Exterior Mirror C521-5 CLN31 (VT/GN) - Ground RH Exterior Mirror C601-5 CLN32 (BN/YE) - Ground (Scheme 20): Identifying Exterior Mirror Connector Terminals Is the resistance greater than 10, 000 ohms? Yes: GO to C6. No: REPAIR the circuit.
6. C6 CHECK THE PUDDLE LAMP VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Exterior Mirror C521-5 CLN31 (VT/GN) C501B-6 CLN31 (VT/GN) RH Exterior Mirror C601-5 CLN32 (BN/YE) C652B-6 CLN32 (BN/YE) (Scheme 21): Checking Puddle Lamp Circuit For An Open Is the resistance less than 3 ohms? Yes: INSTALL a new door module in question. REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS - WITH WINDOW ONE-TOUCH UP»(ref-569610). No: REPAIR the circuit.
7. C7 CHECK THE EXTERIOR MIRROR GROUND CIRCUIT Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Exterior Mirror C521-5 CLN31 (VT/GN) C521-6 RPM05 (VT/GN) RH Exterior Mirror C601-5 CLN32 (BN/YE) C601-6 RPM08 (GN/BU) (Scheme 22): Identifying Exterior Mirror Connector Terminals Is the voltage greater than 11 volts? Yes: INSTALL a new exterior mirror. REFER to «REAR VIEW MIRRORS - WITH WINDOW ONE-TOUCH UP»(ref-569645). No: GO to C8.
8. C8 CHECK THE PUDDLE LAMP GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: DDM C501B (left puddle lamp). Disconnect: PDM C652B (right puddle lamp). Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Exterior Mirror C521-6 RPM05 (VT/GN) C501B-18 RPM05 (VT/GN) RH Exterior Mirror C601-6 RPM08 (GN/BU) C652B-18 RPM08 (GN/BU) (Scheme 23): Checking Puddle Lamp Circuit For An Open Is the resistance less than 3 ohms? Yes: INSTALL a new door module in question. REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS - WITH WINDOW ONE-TOUCH UP»(ref-569610). No: REPAIR the circuit.

1. Wiring, terminals or connectors
2. Door ajar switch
3. BCM

Scheme 24

Scheme 25

Scheme 26

Scheme 27

Scheme 28

1. D1 CHECK THE DOOR AJAR SWITCH PIDs Ignition ON. Using a scan tool, perform BCM self-test. Monitor the BCM PIDs (DOOR_SW_LR, DOOR_SW_PSGR, DOOR_SW_LR and DOOR_SW_RR) while opening and closing all the doors. Do all the door ajar switch PID values agree with the door positions? Yes: If the interior courtesy lamps are on, GO to «PINPOINT TEST E»(ref-569638-S23451301162013072700000). If the puddle lamps are on, GO to «PINPOINT TEST C»(ref-569638-S12719167272013072700000). No: GO to D2.
2. D2 BYPASS THE SUSPECT DOOR AJAR SWITCH Disconnect: Suspect Door Ajar Switch. Connect a fused jumper wire between: Lead 1 Lead 2 Pin Circuit Pin Circuit LH Front Door Ajar Switch C525-3 CPL26 (BK) C525-5 RPL63 (BK) RH Front Door Ajar Switch C609-6 CPL31 (BK) C609-4 RPL64 (BK) LH Rear Door Ajar Switch C705-3 CPL36 (GN) C705-5 RPL71 (BK/VT) RH Rear Door Ajar Switch C805-6 CPL39 (YE) C805-4 GRPL72 (BK/GN) see scheme 23: Identifying Door/Ajar Switch Connector Terminals Using a scan tool, view BCM PIDs. Monitor the BCM PIDs (DOOR_SW_LR, DOOR_SW_PSGR, DOOR_SW_LR and DOOR_SW_RR) while opening and closing all the doors. Does the PID indicate the door is closed? Yes: REMOVE the jumper wire. INSTALL a new door latch or door ajar switch in question. REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS - WITH WINDOW ONE-TOUCH UP»(ref-569610). No: REMOVE the jumper wire. GO to D3.
3. D3 BYPASS THE DOOR AJAR SWITCH GROUND CIRCUIT Connect a fused jumper wire between: Lead 1 Lead 2 Pin Circuit Pin Circuit LH Front Door Ajar Switch C525-3 CPL26 (BK) - Ground RH Front Door Ajar Switch C609-6 CPL31 (BK) - Ground LH Rear Door Ajar Switch C705-3 CPL36 (GN) - Ground RH Rear Door Ajar Switch C805-6 CPL39 (YE) - Ground (Scheme 24): Identifying Door/Ajar Switch Connector Terminals Using a scan tool, view BCM PIDs. Monitor the BCM PIDs (DOOR_SW_LR, DOOR_SW_PSGR, DOOR_SW_LR and DOOR_SW_RR) while opening and closing all the doors. Does the PID indicate the door is closed? Yes: REMOVE the jumper wire. For vehicles not equipped with a door module, REPAIR the circuit. For vehicles equipped with a door module, GO to D5. No: REMOVE the jumper wire. GO to D4.
4. D4 CHECK THE DOOR AJAR SWITCH INPUT CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: BCM C2280B. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Front Door Ajar Switch C525-3 CPL26 (BK) C2280B-45 CPL26 (GN/VT) RH Front Door Ajar Switch C609-6 CPL31 (BK) C2280B-46 CPL31 (WH) LH Rear Door Ajar Switch C705-3 CPL36 (GN) C2280B-44 CPL36 (GN) RH Rear Door Ajar Switch C805-6 CPL39 (YE) C2280B-25 CPL39 (YE) (Scheme 25): Checking Door Ajar Switch Input Circuit For Open Is the resistance less than 3 ohms? Yes: GO to D7. No: REPAIR the circuit.
5. D5 CHECK THE DOOR LATCH RETURN CIRCUIT TO THE DOOR MODULE FOR AN OPEN Ignition OFF. Connect: Suspect Door Ajar Switch. Disconnect: Suspect Door Module. Ignition ON. Connect a fused jumper wire between: Lead 1 Lead 2 Pin Circuit Pin Circuit LH Front Door Module C501A-14 RPL63 (BK) - Ground RH Front Door Module C652A-14 RPL64 (BK) - Ground LH Rear Door Module C728-14 RPW49 (BU/BN) - Ground RH Rear Door Module C832-14 RPW55 (GY/VT) - Ground (Scheme 26): Identifying Door Module Connector Terminals Close the door. Using a scan tool, view BCM PIDs. Monitor the BCM PIDs (DOOR_SW_LR, DOOR_SW_PSGR, DOOR_SW_LR and DOOR_SW_RR) while opening and closing all the doors. Does the PID indicate the door is closed? Yes: REMOVE the jumper wire. GO to D6. No: REMOVE the jumper wire. REPAIR the circuit.
6. D6 CHECK THE DOOR MODULE GROUND CIRCUIT FOR AN OPEN Connect a fused jumper wire between: Lead 1 Lead 2 Pin Circuit Pin Circuit LH Front Door Module C501A-14 RPL63 (BK) C501A-13 GD134 (BK/VT) RH Front Door Module C652A-14 RPL64 (BK) C652A-13 GD140 (BK/VT) LH Rear Door Module C728-14 RPW49 (BU/BN) C728-13 GD143 (BK/VT) RH Rear Door Module C832-14 RPW55 (GY/VT) C832-13 GD145 (BK/BU) (Scheme 27): Identifying Door Module Connector Terminals Monitor the BCM PIDs (DOOR_SW_LR, DOOR_SW_PSGR, DOOR_SW_LR and DOOR_SW_RR) while opening and closing all the doors. Does the PID indicate the door is closed? Yes: REMOVE the jumper wire. INSTALL a new door module. REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS - WITH WINDOW ONE-TOUCH UP»(ref-569610). No: REMOVE the jumper wire. REPAIR the circuit.
7. D7 CHECK FOR CORRECT BCM OPERATION Disconnect and inspect all the BCM connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Reconnect the BCM connectors. Make sure they seat and latch correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: CHECK On-Line Automotive Service Information System (OASIS) for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new BCM. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-569586). No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

1. Wiring, terminals or connectors
2. BCM

Scheme 29

1. E1 CHECK THE DOOR AJAR SWITCH PIDs Ignition ON. Using a scan tool, view BCM PIDs. Monitor the BCM PIDs (DOOR_SW_LR, DOOR_SW_PSGR, DOOR_SW_LR and DOOR_SW_RR) while opening and closing all the doors. Do all the door ajar switch PID values agree with the door positions? Yes: For floor courtesy lamps (if equipped) and cargo area lamp, GO to E2. For overhead lamps, GO to E3. No: GO to «PINPOINT TEST D»(ref-569638-S15042302872013072700000).
2. E2 CHECK THE FLOOR AND CARGO AREA LAMP GROUND CONTROL CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Disconnect: BCM C2280C. Ignition ON. Observe the courtesy lamps. Do the floor courtesy lamps (if equipped) and cargo area lamp continue to illuminate? Yes: REPAIR circuit VLN33 (GY/VT). No: GO to E3.
3. E3 ISOLATE THE BCM Ignition OFF. Disconnect: BCM C2280H. Ignition ON. Observe the courtesy lamps. Do the interior courtesy lamps continue to illuminate? Yes: GO to E4. No: GO to E5.
4. E4 CHECK THE INTERIOR COURTESY LAMP GROUND CONTROLLED CIRCUIT FOR A SHORT TO GROUND Close all the doors. Ignition OFF. Disconnect: LH Front Interior Lamp C908 (with a roof opening panel). Disconnect: Front Interior Lamp C931 (without a roof opening panel). Ignition ON. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit Front Interior Lamp C931-4 CLN27 (WH/BN) - Ground LH Front Interior Lamp C908-4 VLN33 (GY/VT) - Ground (Scheme 28): Identifying Interior/Map Lamp Connector Terminals Is the resistance less than 3 ohms? Yes: INSTALL a new front/driver interior lamp. REFER to «INTERIOR LAMP»(ref-569638-S41539386632013072700000). No: REPAIR the circuit.
5. E5 CHECK FOR CORRECT BCM OPERATION Disconnect and inspect all the BCM connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Reconnect the BCM connectors. Make sure they seat and latch correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: CHECK On-Line Automotive Service Information System (OASIS) for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new BCM. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-569586). No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

1. Wiring, terminals or connectors
2. Demand lamp

Scheme 30

Scheme 31

Scheme 32

Scheme 33

1. F1 CHECK THE COURTESY LAMP OPERATION Ignition ON. Open any door and observe the interior courtesy lamps. Do the interior courtesy lamps illuminate? Yes: If a vanity mirror or glove compartment lamp is inoperative, GO to F2. If an overhead map lamp is inoperative, GO to F4. No: GO to «PINPOINT TEST B»(ref-569638-S18956305362013072700000).
2. F2 CHECK THE VANITY MIRROR OR GLOVE COMPARTMENT LAMP VOLTAGE SUPPLY CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: LH Vanity Mirror C907, RH Vanity Mirror C906 Or Glove Compartment Lamp C254. Ignition ON. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Vanity Mirror C907-1 CBP60 (YE/VT) - Ground RH Vanity Mirror C906-1 CBP60 (YE/VT) - Ground Glove Compartment Lamp C254-1 CBP60 (YE/VT) - Ground (Scheme 29): Identifying Vanity Mirror Or Glove Compartment Lamp Connector Terminals Is the voltage greater than 11 volts? Yes: GO to F3. No: REPAIR the circuit.
3. F3 CHECK THE VANITY MIRROR OR GLOVE COMPARTMENT LAMP GROUND CIRCUIT FOR AN OPEN Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Vanity Mirror C907-1 CBP60 (YE/VT) C907-2 GD138 (BK/WH) RH Vanity Mirror C906-1 CBP60 (YE/VT) C906-2 GD138 (BK/WH) Glove Compartment Lamp C254-1 CBP60 (YE/VT) C254-2 GD138 (BK/WH) (Scheme 30): Identifying Vanity Mirror Or Glove Compartment Lamp Connector Terminals Is the voltage greater than 11 volts? Yes: INSTALL a new vanity or glove compartment lamp for the lamp in question. No: REPAIR the circuit.
4. F4 CHECK THE INTERIOR LAMP GROUND CIRCUIT FOR AN OPEN Ignition OFF. Disconnect: Inoperative Lamp. Ignition ON. Without roof opening panel, measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit Front Interior Lamp C931-1 CBP60 (YE/VT) C931-5 GD138 (BK/WH) Rear Lamp C901-1 CBP60 (YE/VT) C901-4 VLN04 (YE/BU) (Scheme 31): Identifying Interior/Map Lamp Connector Terminals With roof opening panel, measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Front Interior Lamp C908-1 CBP60 (YE/VT) C908-5 GD908 (BK/WH) RH Front Lamp C903-1 CBP60 (YE/VT) C903-5 GD908 (BK/WH) LH Rear Lamp C963-1 CBP60 (YE/VT) C963-5 GD908 (BK/WH) RH Rear Lamp C964-1 CBP60 (YE/VT) C964-5 GD908 (BK/WH) (Scheme 32): Identifying Interior/Map Lamp Connector Terminals Is the voltage greater than 11 volts? Yes: INSTALL a new interior lamp for the lamp in question. REFER to «INTERIOR LAMP»(ref-569638-S41539386632013072700000). No: REPAIR the circuit.

1. Wiring, terminals or connectors
2. BCM

1. Wiring, terminals or connectors
2. Ambient lighting LED
3. BCM
4. Ambient lighting module

Scheme 34

Scheme 35

Scheme 36

Scheme 37

Scheme 38

Scheme 39

Scheme 40

Scheme 41

Scheme 42

Scheme 43

1. H1 CHECK FOR AMBIENT LIGHTING DTCS Ignition ON. Using a scan tool, perform the BCM Self-Test. Is DTC B1088:86, B1088:88 or B1390:87 present? Yes: GO to H2. No: GO to H7.
2. H2 CHECK FOR VOLTAGE TO THE AMBIENT LIGHTING MODULE Ignition OFF. Disconnect: Overhead Console C912. Ignition ON. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C912-8 VLN30 (BN/GN) - Ground (Scheme 33): Identifying Overhead Console Connector C912 Terminals Is the voltage greater than 11 volts? Yes: GO to H3. No: REPAIR the circuit.
3. H3 CHECK THE AMBIENT LIGHTING MODULE GROUND CIRCUIT FOR AN OPEN Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C912-8 VLN30 (BN/GN) C912-5 GD138 (BK) (Scheme 34): Identifying Overhead Console Connector C912 Terminals Is the voltage greater than 11 volts? Yes: GO to H4. No: REPAIR the circuit.
4. H4 CHECK THE LIN CIRCUIT FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect: BCM C2280H. Ignition ON. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C912-6 VLN30 (VT) - Ground (Scheme 35): Identifying Overhead Console Connector C912 Terminals Is any voltage present? Yes: REPAIR the circuit. No: GO to H5.
5. H5 CHECK THE LIN CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C912-6 VLN30 (VT) - Ground (Scheme 36): Identifying Overhead Console Connector C912 Terminals Is the resistance greater than 10, 000 ohms? Yes: GO to H6. No: REPAIR the circuit.
6. H6 CHECK THE LIN CIRCUIT FOR AN OPEN Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C912-6 VLN30 (VT) C2280H-12 VLN30 (VT) (Scheme 37): Checking LIN Circuit For Open Is the resistance less than 3 ohms? Yes: GO to H14. No: REPAIR the circuit.
7. H7 CHECK THE AMBIENT LIGHTING MODULE LED VOLTAGE SUPPLY CIRCUIT FOR VOLTAGE Ignition OFF. Disconnect: LH Front Footwell Lamp C209. Ignition ON. Turn the parking lamps on. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C209-1 CBP17 (BN/GN) - Ground (Scheme 38): Identifying LH Front Footwell Lamp Connector C209 Terminals Is the voltage greater than 11 volts? Yes: GO to H10. No: GO to H8.
8. H8 CHECK THE AMBIENT LIGHTING MODULE LED VOLTAGE OUTPUT CIRCUIT FOR AN OPEN Ignition OFF. Turn the parking lamps off. Disconnect: BCM C2280H. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C912-16 CBP17 (BN/GN) C209-1 CBP17 (BN/GN) (Scheme 39): Checking Ambient Lighting Circuits For Open Is the resistance less than 3 ohms? Yes: GO to H9. No: REPAIR the circuit.
9. H9 CHECK THE AMBIENT LIGHTING LED CIRCUIT FOR A SHORT TO GROUND Disconnect: All Ambient Lighting LEDs. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C912-16 CBP17 (BN/GN) - Ground (Scheme 40): Identifying Overhead Console Connector C912 Terminals Is the resistance greater than 10, 000 ohms? Yes: INSTALL a new overhead console. REFER to «INSTRUMENT PANEL AND CONSOLE»(ref-569596). No: REPAIR the circuit.
10. H10 ISOLATE THE AMBIENT LIGHTING LEDs Turn the parking lamps on. Disconnect and then connect the LEDs one at a time while observing the other LEDs. Left front footwell C209 Right front footwell C266 Rear footwells C3640 Driver door C573 Passenger door C649 Floor console cup holders C3349 Do the other ambient lighting LEDs illuminate when an individual LED is disconnected? Yes: INSTALL a new LED in question. No: GO to H11.
11. H11 CHECK THE AMBIENT LIGHTING LIN CIRCUIT FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect: All Ambient Lighting LEDs. Ignition ON. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C912-15 CLN38 (BU/WH) - Ground (Scheme 41): Identifying Overhead Console Connector C912 Terminals Is any voltage present? Yes: REPAIR the circuit. No: GO to H12.
12. H12 CHECK THE AMBIENT LIGHTING LIN CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C912-15 CLN38 (BU/WH) - Ground (Scheme 42): Identifying Overhead Console Connector C912 Terminals Is the resistance greater than 10, 000 ohms? Yes: GO to H13. No: REPAIR the circuit.
13. H13 CHECK THE AMBIENT LIGHTING LIN CIRCUIT FOR AN OPEN Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C912-15 CLN38 (BU/WH) C209-2 CLN38 (BU/WH) (Scheme 43): Checking Ambient Lighting Circuits For Open Is the resistance less than 3 ohms? Yes: INSTALL a new overhead console. REFER to «INSTRUMENT PANEL AND CONSOLE»(ref-569596). No: REPAIR the circuit.
14. H14 CHECK FOR CORRECT BCM OPERATION Disconnect and inspect all the BCM connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Reconnect the BCM connectors. Make sure they seat and latch correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: CHECK On-Line Automotive Service Information System (OASIS) for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new BCM. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-569586). No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

1. Wiring, terminals or connectors
2. Ambient lighting LED
3. Ambient lighting module

Scheme 44

Scheme 45

Scheme 46

Scheme 47

Scheme 48

1. I1 CHECK FOR VOLTAGE TO THE INOPERATIVE LED Ignition OFF. Disconnect: Inoperative Ambient Lighting LED. Ignition ON. Turn the parking lamps on. For front footwell lamps, measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Front Footwell C209-1 CBP17 (BN/GN) - Ground RH Front Footwell C266-1 CBP17 (BN/GN) - Ground see scheme 44: Identifying Front Footwell Lamp Connector Terminals For rear footwell, cup holder and door lamps, measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit Cup holders C3349-1 CBP17 (BN/GN) - Ground Rear Footwells C3640-1 CBP17 (BN/GN) - Ground LH Front Door C573-1 CBP17 (BN/GN) - Ground RH Front Door C649-1 CBP17 (BN/GN) - Ground (Scheme 44): Identifying Rear Footwell, Cup Holder And Door Lamp Connector Terminals Is the voltage greater than 11 volts? Yes: GO to I2. No: REPAIR the circuit.
2. I2 CHECK THE LED GROUND CIRCUIT FOR AN OPEN For front footwell lamps, measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Front Footwell C209-1 CBP17 (BN/GN) C209-3 GD138 (BK/WH) RH Front Footwell C266-1 CBP17 (BN/GN) C266-3 GD138 (BK/WH) (Scheme 45): Identifying Front Footwell Lamp Connector Terminals For rear footwell, cup holder and door lamps, measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit Cup Holders C3349-1 CBP17 (BN/GN) C3349-3 RLF26 (BK) Rear Footwells C3640-1 CBP17 (BN/GN) C3640-3 RLF26 (BK) LH Front Door C573-1 CBP17 (BN/GN) C573-3 RLF26 (BK) RH Front Door C649-1 CBP17 (BN/GN) C649-3 RLF26 (BK) (Scheme 46): Identifying Rear Footwell, Cup Holder And Door Lamp Connector Terminals Is the voltage greater than 11 volts? Yes: GO to I3. No: REPAIR the circuit.
3. I3 CHECK THE AMBIENT LIGHTING LIN CIRCUIT FOR AN OPEN Ignition OFF. Turn the parking lamps off. Disconnect: Overhead Console C912. For front footwell lamps, measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit LH Front Footwell C912-15 CLN38 (BU/WH) C209-2 CLN38 (BN/WH) RH Front Footwell C912-15 CLN38 (BU/WH) C266-2 CLN38 (BN/WH) (Scheme 47): Checking Ambient Lighting Circuits For Open For rear footwell, cup holder and door lamps, measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit Cup Holders C912-15 CLN38 (BU/WH) C3349-2 CLN38 (BU/WH) Rear Footwells C912-15 CLN38 (BU/WH) C3640-2 CLN38 (BU/WH) LH Front Door C912-15 CLN38 (BU/WH) C573-2 CLN17 (BU/WH) RH Front Door C912-15 CLN38 (BU/WH) C649-2 CLN17 (BU/WH) see scheme 49: Checking Ambient Lighting LIN Circuit For Open Is the resistance less than 3 ohms? Yes: INSTALL a new ambient lighting LED in question. No: REPAIR the circuit.

1. Wiring, terminals or connectors
2. Liftgate latch
3. LTM
4. BCM

Scheme 49

1. J1 CHECK THE COURTESY LAMP OPERATION FROM ANY DOOR Ignition OFF. Open any door and observe the courtesy lamps. Do the courtesy lamps illuminate? Yes: GO to J2. No: GO to «PINPOINT TEST A»(ref-569638-S25129809542013072700000).
2. J2 CHECK THE LTM OR THE LIFTGATE LATCH Disconnect: Liftgate Latch C479 (manual liftgate). Disconnect: LTM C4174B (power liftgate). Do the courtesy lamps illuminate? Yes: GO to J4. No: GO to J3.
3. J3 CHECK THE LIFTGATE AJAR INPUT CIRCUIT FOR A SHORT TO GROUND Disconnect: BCM C2280B. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C2280B-47 CPL44 (YE/OG) - Ground (Scheme 48): Identifying BCM Connector C2280B Terminals Is the resistance greater than 10, 000 ohms? Yes: GO to J5. No: REPAIR the circuit.
4. J4 CHECK FOR CORRECT LTM OPERATION Disconnect and inspect all the LTM connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Reconnect the LTM connectors. Make sure they seat and latch correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: CHECK On-Line Automotive Service Information System (OASIS) for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new LTM. REFER to «BODY CLOSURES»(ref-569640). No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
5. J5 CHECK FOR CORRECT BCM OPERATION Disconnect and inspect all the BCM connectors. Repair: corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins pushed-out pins - install new pins as necessary Reconnect the BCM connectors. Make sure they seat and latch correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: CHECK On-Line Automotive Service Information System (OASIS) for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new BCM. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-569586). No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.