Interior Lighting: Other — Lincoln LS I рестайлинг (2003-2006)

Switched System Power (SSP)

The SSP is invoked by both the FEM and REM. This function removes power from relays that provide power to the exterior lamps, interior lamps, and power door locks. This is only accomplished when both the FEM and the REM are in the sleep mode. The sleep function of the FEM and REM places the modules in sleep mode when the ignition switch is in the OFF position, and no wake up (inputs) signals occur for 30 minutes. The module will not sleep if the parking lamps or the hazard lamps are active. The following relays are controlled by the SSP function: SSP1, SSP2, SSP3, and SSP4. When either the FEM or REM are not in sleep mode, all SSP relays will be energized. Each relay, when energized, will supply power to multiple features/functions. For additional information, refer to the SSP Relay Index for diagnosis and testing of SSP-related issues.

Refer to SYSTEM WIRING DIAGRAMS for schematic and connector information.

Scheme 25

Scheme 25: Special Tool(s)

SSP Relay Index

Relay	Fuse	Controlled System(s)
SSP1	BJB fuse 27 (30A)	Driver power door lock (FEM) LH high beam headlamps (FEM) RH front park/turn/side marker lamps (FEM) RH low beam headlamp Driver exterior rear view mirror LH front park/turn/side marker lamps (FEM)
SSP2	BJB fuse 32 (30A)	LH low beam headlamp (FEM) RH high beam headlamps (FEM) Passenger exterior rear view mirror (FEM) Switch illumination backlighting
SSP3	BJB fuse 24 (30A)	High mounted stop lamp (REM) RH rear park/stop lamps (REM) Reversing lamps (REM) LH rear turn signals (REM) Interior and demand lighting (FEM)
SSP4	BJB fuse 23 (30A)	LH rear park/stop lamps (REM) RH rear turn signals (REM) All passenger door locks (REM) License lamps Luggage compartment release solenoid/switch Fuel door release solenoid/switch Luggage compartment lamp

SSP RELAY INDEX

When diagnosing an SSP relay, check that all systems for that relay are inoperative. Refer to EXTERIOR LIGHTING - LS .

Possible Causes

battery junction box (BJB)
circuit 29S-LC23 (OG/WH) open
circuit 31S-LC3 (BK/BU) short to power
circuit 31-DK20 (BK/RD) open
FEM

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Scheme 26: PINPOINT TEST A: THE INTERIOR LAMPS ARE INOPERATIVE

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A1 CHECK CIRCUIT 30S-DB16 (RD/GN) FOR OPEN NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Remove BJB fuse 5 (10A). Measure the voltage between BJB fuse 5 (10A) pin 1, circuit 30S-DB16 (RD/GN), and ground. Is the voltage greater than 10 volts? Yes : INSTALL fuse 5(10A).GO to A2. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
A2 CHECK CIRCUIT 29S-LC23 (OG/WH) FOR AN OPEN Disconnect: RH Footwell Lamp C266. Measure the voltage between the RH footwell lamp, C266-2, circuit 29S-SC23 (OG/WH), harness side and ground Is the voltage greater than 10 volts? Yes : RECONNECT C266. GO to A3. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
A3 CHECK CIRCUIT 31S-LC3 (BK/BU) FOR SHORT TO POWER Key in OFF position. Remove BJB fuse 5 (10A). Disconnect: FEM C201F. Measure the voltage between FEM C201f-12, circuit 31S-LC3 (BK/BU), harness side and ground. Is the voltage greater than 10 volts? Yes : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. No : GO to A4.
A4 CHECK FEM FOR OPENS Install BJB fuse 5 (1 0A). Key in ON position. Connect a 30A fused jumper between FEM C201f-12, circuit 31S-LC3 (BK/BU), harness side and ground. Did the interior lamps illuminate? Yes : GO to A5. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
A5 CHECK CIRCUIT 31-DK20 (BK/RD) FOR AN OPEN Key in OFF position. Disconnect: FEM C201 a Measure the resistance between FEM C201 a-11, circuit 31-DK20 (BK/RD) harness side and ground. Is the resistance less than 5 ohms? Yes : GO to A6. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
A6 CHECK FOR CORRECT FEM OPERATION Disconnect all FEM connectors. Check for: corrosion pushed-out pins Connect all FEM connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new FEM. REFER to «MODULE COMMUNICATIONS NETWORK»(ref-207567) . TEST the system for normal operation. No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

individual interior lamp
LH map lamp switch
RH map lamp switch
LH rear grab handle lamp assembly
RH rear grab handle lamp assembly
LH instrument panel junction block
RH instrument panel junction block
auxiliary junction box
central junction box (CJB)
FEM
circuit 29S-LC34 (OG/YE) open
circuit 9-LC34 (BN) open
circuit 29S-LC36 (OG/YE) open
circuit 9-LC36 (BN) open
circuit 9-LB13 (BN/RD) open
circuit 29S-LB12 (OG/YE) open
circuit 31S-LB12 (BK/YE) open
circuit 9-LB20 (BN/BU) open
circuit 29S-LB19 (OG/BU) open
circuit 31S-LB19 (BK/BU) open
circuit 29S-LB14 (OG) open
circuit 9-LB14 (BN/BU) open
circuit 29S-LB21 (OG/BK) open
circuit 9-LB21 (BN/GN) open
circuit 29S-LC11 (OG/WH) open
circuit 31S-LC11 (BK/WH) open
circuit 29S-LC23 (OG/WH) open
circuit 31S-LC23 (BK/WH) open
circuit 31S-LC4 (BK/GN) open
circuit 29S-LC1 (OG/YE) open
circuit 29S-LC5 (OG/GN) open
circuit 9-LB1 (BN) open
circuit 31-DK20 (BK/RD) open

Scheme 31

Scheme 31: PINPOINT TEST B: THE INTERIOR LAMPS DO NOT TURN ON WITH ONE DOOR OPEN

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B1 VERIFY INTERIOR LAMP SYMPTOM Verify the interior lamp symptom. Is more than one lamp inoperative? Yes : GO to B28 . No : If a puddle lamp is inoperative, GO to B2. If a map lamp is inoperative, GO to B9 . If a rear grab handle lamp is inoperative, GO to B16 . If a footwell lamp is inoperative, GO to B21 .
B2 VERIFY PUDDLE LAMP SYMPTOM Verify the area of the puddle lamp symptom. Is the driver side puddle lamp inoperative? Yes : GO to B3. No : GO to B6 .
B3 CHECK CIRCUIT 29S-LC34 (OG/YE) FOR VOLTAGE NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after the ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Key in ON position. Disconnect: Driver Side Puddle Lamp C520. Measure the voltage between the driver side puddle lamp C520-2, circuit 29S-LC34 (OG/YE), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to B5 . No : GO to B4.
B4 CHECK CIRCUIT 29S-L34 (OG/YE) FOR AN OPEN Key in OFF position. Disconnect: Auxiliary Junction Box C283b. Measure the resistance between auxiliary junction box C283b-7, circuit 29S-LC34 (OG/YE), harness side and driver side puddle lamp C520-2, circuit 29S-LC34 (OG/YE) harness side. Is the resistance less than 5 ohms? Yes : INSTALL a new auxiliary junction box. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B5 CHECK CIRCUIT 9-LC34 (BN) FOR AN OPEN Key in OFF position. Disconnect: FEM C201b. Measure the resistance between FEM C201 b-18, circuit 9-LC34 (BN), harness side and driver side puddle lamp C520-12, circuit 9-LC34 (BN) harness side. Is the resistance less than 5 ohms? Yes : GO to B38 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B6 CHECK CIRCUIT 29S-LC36 (OG/YE) FOR VOLTAGE NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Key in ON position. Disconnect: Passenger Side Puddle Lamp C601. Measure the voltage between the passenger side puddle lamp C601-2, circuit 29S-LC36 (OG/YE), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to B8 . No : GO to B7.
B7 CHECK CIRCUIT 29S-LC36 (OG/YE) FOR AN OPEN Key in OFF position. Disconnect: CJB C270d. Measure the resistance between CJB C270d-20, circuit 29S-LC36 (OG/YE), harness side and passenger side puddle lamp C601-2, circuit 29S-LC36 (OG/YE) harness side. Is the resistance less than 5 ohms? Yes : INSTALL a new CJB. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B8 CHECK CIRCUIT 9-C36 (BN) FOR AN OPEN Key in OFF position. Disconnect: FEM C201b. Measure the resistance between FEM C201b-12, circuit 9-LC36 (BN), harness side and passenger side puddle lamp C601-12, circuit 9-LC36 (BN), harness side. Is the resistance less than 5 ohms? Yes : GO to B38 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B9 VERIFY INTERIOR MAP LAMP SYMPTOM Verify the area of the interior map lamp symptom. Is the LH map lamp inoperative? Yes : GO to B10. No : GO to B13 .
B10 CHECK LH MAP LAMP SWITCH FOR VOLTAGE NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Key in ON position. Disconnect: LH Front Map Reading Lamp Switch C910. Measure the voltage between the LH front map reading lamp switch C910-1, circuit 31S-LB12 (BK/YE), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to B11. No : GO to B12 .
B11 CHECK CIRCUIT 9-LB13 (BN/RD) FOR AN OPEN Measure the resistance between LH map lamp switch C910-6, circuit 9-LB13 (BN/RD), harness side and ground. Open the driver door. When the driver door is opened, does resistance drop to less than 5 ohms? Yes : INSTALL a new front map lamp assembly. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B12 CHECK CIRCUITS 29S-LB12 (OG/YE) AND 31S-LB12 (BK/YE) FOR AN OPEN Disconnect: LH Front Map Lamp C908. Measure the voltage between LH front map lamp bulb C908-2, circuit 29S-LB12 (OG/YE), harness side and ground. Is the voltage greater than 10 volts? Yes : REPAIR circuit 31S-LB12 (BK/YE). CLEAR the DTCs. REPEAT the self-test. No : REPAIR circuit 29S-LB12 (OG/YE). CLEAR the DTCs. REPEAT the self-test.
B13 CHECK THE RH MAP LAMP SWITCH FOR VOLTAGE NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Disconnect: RH Front Map Lamp Switch C905. Key in ON position. Measure the voltage between the RH front map lamp switch C905-1, circuit 31S-LB19 (BK/BU), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to B14. No : GO to B15 .
B14 CHECK CIRCUIT 9-LB20 (BN/BU) FOR AN OPEN Measure the resistance between RH front map lamp switch C905-6, circuit 9-LB20 (BN/BU), harness side and ground. Open the driver door. When the driver door is opened, does resistance drop to less than 5 ohms? Yes : INSTALL a new front map lamp assembly. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B15 CHECK CIRCUITS 29S-LB19 (OG/BU) AND 31S-LB19 (BK/BU) FOR AN OPEN Disconnect: RH Front Map Lamp C903. Measure the voltage between RH front map lamp C903-2, circuit 29S-LB19 (OG/BU), harness side and ground. Is the voltage greater than 10 volts? Yes : REPAIR circuit 31S-LB19 (BK/BU). CLEAR the DTCs. REPEAT the self-test. No : REPAIR circuit 29S-LB19 (OG/BU). CLEAR the DTCs. REPEAT the self-test.
B16 VERIFY GRAB HANDLE INTERIOR LAMP SYMPTOM Verify the area of the rear grab handle interior lamp symptom. Is the LH rear grab handle interior lamp inoperative? Yes : GO to B17. No : GO to B19 .
B17 CHECK CIRCUIT 29S-LB14 (OG) NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Disconnect: LH Rear Grab Handle Lamp C9009. Key in ON position. Measure the voltage between the LH rear grab handle lamp C9009-1, circuit 29S-LB14 (OG) harness side and ground. Is the voltage greater than 10 volts? Yes : GO to B18 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B18 CHECK CIRCUIT 9-LB14 (BN/BU) FOR AN OPEN Measure the resistance between the LH rear grab handle lamp C9009-3, circuit 9-LB14 (BN/BU) harness side and ground. Open the driver door. When the driver door is opened, does the resistance drop to less than 5 ohms? Yes : INSTALL a new LH rear grab handle lamp assembly. CLEAR the DTCs. REPEAT the self-test. No : REPAIR circuit 9-LB14 (BN/BU). CLEAR the DTCs. REPEAT the self-test.
B19 CHECK CIRCUIT 29S-LB21 (OG/BK) NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Disconnect: RH Rear Grab Handle Lamp C9010. Key in ON position. Measure the voltage between the RH rear grab handle lamp C9010-1, circuit 29S-LB21 (OG/BK) harness side and ground. Is the voltage greater than 10 volts? Yes : GO to B20. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B20 CHECK CIRCUIT 9-LB21 (BN/GN) FOR AN OPEN Measure the resistance between the RH rear grab handle lamp C9010-3, circuit 9-LB21 (BN/GN) harness side and ground. Open the driver door. When the driver door is opened, does the resistance drop to less than 5 ohms? Yes : INSTALL a new RH rear grab handle lamp assembly. CLEAR the DTCs. REPEAT the self-test. No : REPAIR circuit 9-LB21 (BN/GN). CLEAR the DTCs. REPEAT the self-test.
B21 VERIFY INTERIOR FRONT FOOTWELL LAMP SYMPTOM Verify the area of the front footwell interior lamp symptom. Are both front footwell lamps inoperative? Yes : GO to B28 . No : If the LH footwell lamp is inoperative, GO to B22. If the RH footwell lamp is inoperative, GO to B25 .
B22 CHECK CIRCUIT 29S-LC11 (OG/WH) FOR VOLTAGE NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Key in ON position. Disconnect: LH Front Footwell Lamp C209. Measure the voltage between the LH front footwell lamp C209-2, circuit 29S-LC11 (OG/WH), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to B24 . No : GO to B23.
B23 CHECK CIRCUIT 29S-LC11 (OG/WH) FOR AN OPEN Key in OFF position. Disconnect: Auxiliary Junction Box C283d. Measure the resistance between the LH front footwell lamp C209-2, circuit 29S-LC11 (OG/WH), harness side and auxiliary junction box C283d-15, circuit 29S-LC11 (OG/WH), harness side. Is the resistance less than 5 ohms? Yes : INSTALL a new auxiliary junction box. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B24 CHECK CIRCUIT 31S-LC11 (BK/WH) FOR AN OPEN Key on OFF position. Disconnect: LH Instrument Panel Junction Block C224. Measure the resistance between the LH instrument panel junction block, C224-11, circuit 31S-LC11 (BK/WH), harness side and LH front footwell lamp C209-1, circuit 31S-LC11 (BK/WH) harness side. Is the resistance less than 5 ohms? Yes : REPAIR LH Instrument panel junction block c224. CLEAR the DTCs. REPEAT the self-test No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B25 CHECK CIRCUIT 29-LC23 (OG/WH) FOR VOLTAGE NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Key in ON position. Disconnect: RH Front Footwell Lamp Bulb C266. Measure the voltage between the RH front footwell lamp C266-2, circuit 29S-LC23 (OG/WH), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to B27 . No : GO to B26.
B26 CHECK CIRCUIT 29S-LC23 (OG/WH) FOR AN OPEN Key on OFF position. Disconnect: RH Instrument Panel Junction Block C261. Measure the resistance between the RH front footwell lamp C266-2, circuit 29S-LC23 (OG/WH), harness side and RH instrument panel junction block, C261-18, circuit 29S-LC23 (OG/WH) harness side. Is the resistance less than 5 ohms? Yes : Verify if the glove box lamp is operating correctly. If it is OK, REPAIR RH instrument panel junction block, C261. CLEAR the DTCs. REPEAT the self-test. If the glove box lamp is not operating correctly, GO to B28 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B27 CHECK CIRCUIT 31S-LC23 (BK/WH) FOR AN OPEN Key on OFF position. Disconnect: LH Instrument Panel Junction Block C224. Measure the resistance between the LH instrument panel junction block, C224-10, circuit 31S-LC23 (BK/WH), harness side and RH front footwell lamp C266-1, circuit 31S-LC23 (BK/WH), harness side. Is the resistance less than 5 ohms? Yes : REPAIR LH instrument panel junction block, C224. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B28 CHECK LH AND RH PUDDLE LAMPS Verify the symptom. Are both puddle lamps inoperative? Yes : INSTALL a new CJB. CLEAR the DTCs. REPEAT the self-test. No : GO to B29.
B29 CHECK LH AND RH FRONT FOOTWELL LAMPS Verify the symptom. Are both front footwell interior lamps inoperative? Yes : GO to B30. No : GO to B32 .
B30 CHECK VOLTAGE TO AUXILIARY JUNCTION BOX Disconnect: Auxiliary Junction Box 283d. Measure the voltage between the auxiliary junction box C283d-10, circuit 31S-LC4 (BK/BU), harness side and ground. Is the voltage greater than 10 volts? Yes : INSTALL a new auxiliary junction box. CLEAR the DTCs. REPEAT the self-test. No : GO to B31.
B31 CHECK CIRCUIT 31S-LC4 (BK/GN) FOR AN OPEN Disconnect: LH Instrument Panel Junction Block C224. Measure the resistance between the LH instrument panel junction block, C224-9, circuit 31S-LC4 (BK/BU), harness side and auxiliary junction box C283d-10, circuit 31S-LC4 (BK/BU), harness side. Is the resistance less than 5 ohms? Yes : REPAIR LH instrument panel junction block. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B32 CHECK RH FRONT FOOTWELL LAMP AND GLOVE BOX LAMP Verify the symptom. Are the RH front footwell and glove box lamps the only lamps that are inoperative? Yes : GO to B33. No : GO to B34 .
B33 CHECK CIRCUIT 29S-LC1 (OG/YE) Disconnect: RH Instrument Panel Junction Block C261. Key in ON position. Measure the voltage between RH instrument panel junction block, C261-19, circuit 29S-LC1 (OG/BU), harness side and ground. Is the voltage greater than 10 volts? Yes : REPAIR RH instrument panel junction block. CLEAR the DTCs. REPEAT the self-test. No : REPAIR circuit 29S-LC1 (OG/YE). CLEAR the DTCs. REPEAT the self-test.
B34 CHECK LH FOOTWELL LAMP AND LH PUDDLE LAMP Verify the symptom. Are the LH footwell and LH puddle lamps the only lamps that are inoperative? Yes : GO to B35. No : GO to B36 .
B35 CHECK CIRCUIT 29S-LC5 (OG/GN) Disconnect: Auxiliary Junction Box C283b. Key in ON position. Measure the voltage between the auxiliary junction box C283b-15, circuit 29S-LC5 (OG/GN), harness side and ground. Is the voltage greater than 10 volts? Yes : INSTALL a new auxiliary junction box. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B36 CHECK BOTH MAP AND BOTH GRAB HANDLE LAMPS OPERATION AT THE AUXILIARY JUNCTION BOX Disconnect: Auxiliary Junction Box C283a. Connect a 10A fused jumper between auxiliary junction box C283a-2, circuit 9-LB1 (BN), harness side and ground. Do both map and both rear grab handle lamps illuminate? Yes : INSTALL a new auxiliary junction box. CLEAR the DTCs. REPEAT the self-test. No : GO to B37 .
B37 CHECK CIRCUIT 9-LB1 (BN) FOR AN OPEN Key in OFF position. Disconnect: LH Rear Grab Handle Lamp C9009. Measure the resistance between the LH rear grab handle lamp, C9009-3, circuit 9-LB14 (BN/BU), harness side and auxiliary junction box C283a-2, circuit 9-LB1 (BN), harness side. Is the resistance less than 5 ohms? Yes : REPAIR circuit 29S-LB2 (OG/BU). CLEAR the DTCs. REPEAT the self-test. No : REPAIR circuit 9-LB1 (BN). CLEAR the DTCs. REPEAT the self-test.
B38 CHECK CIRCUIT 31-DK20 (BK/RD) FOR AN OPEN Key in OFF position. Disconnect: FEM C201a Measure the resistance between FEM C201 a-11, circuit 31-DK20 (BK/RD) harness side and ground. Is the resistance less than 5 ohms? Yes : GO to B39. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
B39 CHECK FOR CORRECT FEM OPERATION Disconnect all FEM connectors. Check for: corrosion pushed-out pins Connect all FEM connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new FEM. REFER to «MODULE COMMUNICATIONS NETWORK»(ref-207567) . TEST the system for normal operation. No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

driver door ajar switch
passenger door ajar switch
LH rear passenger door ajar switch
RH rear passenger door ajar switch
map lamp switches
rear grab handle lamp switches
FEM
REM
circuit 31-AA58 (BK) open
circuit 31S-GL46 (BK/YE) open
circuit 31S-GL47 (BK/BU) open
circuit 31S-GL12 (BK/OG) short to ground
circuit 31S-GL19 (BK/GN) short to ground
circuit 31S-LC3 (BK/BU) short to ground
circuit 9-LC34 (BN) short to ground
circuit 9-LB1 (BN) short to ground

Scheme 60

Scheme 60: PINPOINT TEST C: THE INTERIOR LAMPS STAY ON CONTINUOUSLY

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C1 USE THE RECORDED RESULTS FROM FEM SELF-TESTS Use the recorded FEM continuous and self-test DTCs. Are any DTCs recorded? Yes : If DTCB1319, Go to C3. If DTC B1327, GO to C6 . For all other DTCs, REFER to «FEM Diagnostic Trouble Code (DTC) Index»(ref-207566-S12079726312005113000000) . No : GO to C2.
C2 USE THE RECORDED RESULTS FROM REM SELF-TESTS Use the recorded REM continuous and self-test DTCs. Are any DTCs recorded? Yes : If DTC B1335, GO to C20 . If DTC B1571, GO to C23 . For all other DTCs, REFER to «REM Diagnostic Trouble Code (DTC) Index»(ref-207566-S34000346842005113000000) . No : GO to C9 .
C3 CHECK THE DRIVER DOOR AJAR SWITCH Key in OFF position. Disconnect: Driver Door Lock Actuator C525. Connect a fused jumper wire between driver door lock actuator C525-6, circuit 31-AA58 (BK), harness side and C525-8, circuit 31S-GL46 (BK/YE), harness side. Did the interior lamps tun OFF after 20-30 seconds? Yes : INSTALL a new driver door lock actuator/ajar switch. REFER to «ANTI-THEFT»(ref-207568) . CLEAR the DTCs. REPEAT the self-test. No : GO to C4.
C4 CHECK CIRCUIT 31-AA58 (BK) FOR AN OPEN Measure the resistance between driver door lock actuator C525-6, circuit 31-AA58 (BK), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to C5. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
C5 CHECK CIRCUIT 31S-GL46 (BK/YE) FOR AN OPEN Disconnect: FEM C201f. Measure the resistance between driver door lock actuator, C525-8, circuit 31S-GL46 (BK/YE), harness side and FEM, C201f-8, circuit 31S-GL46 (BK/YE), harness side. Is the resistance less than 5 ohms? Yes : GO to C26 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
C6 CHECK THE FRONT PASSENGER DOOR AJAR SWITCH Key in OFF position. Disconnect: Front Passenger Door Lock Actuator C609. Connect a fused jumper wire between front passenger door lock actuator, C609-6, circuit 31-AA58 (BK), harness side and C609-8, circuit 31S-GL47 (BK/BU), harness side. Did the interior lamps tun OFF after 20-30 seconds? Yes : INSTALL a new passenger door lock actuator/ajar switch. REFER to «ANTI-THEFT»(ref-207568) . CLEAR the DTCs. REPEAT the self-test. No : GO to C7.
C7 CHECK CIRCUIT 31-AA58 (BK) FOR AN OPEN Measure the resistance between front passenger door lock actuator, C609-6, circuit 31-AA58 (BK), harness side and Is the resistance less than 5 ohms? Yes : GO to C8. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
C8 CHECK CIRCUIT 31S-GL47 (BK/BU) FOR AN OPEN Key in OFF position. Disconnect: FEM C201e. Measure the resistance between front passenger door lock actuator, C609-8, circuit 31S-GL47 (BK/BU), harness side and FEM, C201 e-15, circuit 31S-GL47 (BK/BU), harness side. Is the resistance less than 5 ohms? Yes : GO to C26 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
C9 CHECK LH FRONT MAP READING LAMP OPERATION Key in ON position. Activate the LH front map reading lamp demand switch. Do all other interior lamps turn OFF? Yes : GO to C12 . No : GO to C10.
C10 CHECK RH FRONT MAP READING LAMP OPERATION Activate the RH front map lamp switch. Do all other interior lamps turn OFF? Yes : GO to C13 . No : GO to C11.
C11 CHECK LH GRAB HANDLE LAMP SWITCH OPERATION Activate the LH rear grab handle lamp switch. Do all other interior lamps turn OFF? Yes : INSTALL a new LH rear grab handle lamp assembly. CLEAR the DTCs. REPEAT the self-test. No : GO to C14 .
C12 CHECK CIRCUIT 31S-LB12 (BK/YE) FOR SHORT TO GROUND Disconnect: LH Front Map Reading Lamp Switch C910. Does the LH front map lamp stay ON? Yes : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. No : INSTALL a new front map lamp assembly. CLEAR the DTCs. REPEAT the self-test.
C13 CHECK CIRCUIT 31S-LB19 (BK/BU) FOR SHORT TO GROUND Disconnect: RH Front Map Reading Lamp Switch C905. Does the RH front map lamp stay ON? Yes : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. No : INSTALL a new front map lamp assembly. CLEAR the DTCs. REPEAT the self-test.
C14 CHECK RH GRAB HANDLE LAMP SWITCH OPERATION Activate the RH rear grab handle lamp switch. Do all other interior lamps turn off? Yes : INSTALL a new RH rear grab handle lamp assembly. CLEAR the DTCs. REPEAT the self-test. No : GO to C15.
C15 ISOLATE CIRCUIT 31S-LC3 (BK/BU) AND FEM FOR SHORT TO GROUND Key in OFF position. Disconnect: Auxiliary Junction Box C283b. Measure the resistance between auxiliary junction box, C283b-3, circuit 31S-LC3 (BK/BU), harness side and ground. Is resistance greater than 10,000 ohms? Yes : GO to C17 . No : GO to C16.
C16 CHECK CIRCUIT 31S-LC3 (BK/BU) FOR SHORT TO GROUND Disconnect: FEM C201f. Measure the resistance between auxiliary junction box C283b-3, circuit 31S-LC3 (BK/BU), harness side and ground. Is the resistance greater than 10,000 ohms? Yes : GO to C26 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
C17 CHECK CIRCUIT 9-LC34 (BN) FOR SHORT TO GROUND Key in OFF position. Disconnect: Auxiliary Junction Box C283b. Are all interior lamps still on? Yes : GO to C18. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
C18 ISOLATE THE FOOTWELL LAMP CIRCUITS FOR SHORT TO GROUND Disconnect: Auxiliary Junction Box C283d. Are all the interior lamps still on? Yes : GO to C19. No : REPAIR circuit 31S-LC4 (OG/YE). CLEAR the DTCs. REPEAT the self-test.
C19 CHECK CIRCUITS 9-LB1 (BN) AND 9-LC36 (BN) FOR SHORT TO GROUND Disconnect: Auxiliary Junction Box C283a. Measure the resistance between auxiliary junction box, C283a-2, circuit 9-LB1 (BN), harness side and ground. Is the resistance greater than 10,000 ohms? Yes : INSTALL a new auxiliary junction box. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
C20 CHECK THE RH REAR PASSENGER DOOR AJAR SWITCH Key in OFF position. Disconnect: RH Rear Passenger Door Lock Actuator C804. Connect a fused jumper wire between RH rear passenger door lock actuator C804-6, circuit 31-AA58 (BK), harness side and C804-8, circuit 31S-GL19 (BK/GN), harness side. Did the interior lamps tun OFF after 20-30 seconds? Yes : INSTALL a new RH rear passenger door lock actuator/ajar switch. REFER to «ANTI-THEFT»(ref-207568) . CLEAR the DTCs. REPEAT the self-test. No : GO to C21.
C21 CHECK CIRCUIT 31-AA58 (BK) FOR AN OPEN Measure the resistance between RH rear passenger door lock actuator, C804-6, circuit 31-AA58 (BK), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to C22. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
C22 CHECK CIRCUIT 31S-GL19 (BK/GN) FOR AN OPEN Disconnect: REM C420d. Measure the resistance between RH rear passenger door lock actuator, C804-8, circuit 31S-GL19 (BK/GN), harness side and REM C420d-17, circuit 31S-GL19 (BK/GN), harness side. Is the resistance less than 5 ohms? Yes : GO to C27 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
C23 CHECK THE LH REAR PASSENGER DOOR AJAR SWITCH Key in OFF position. Disconnect: LH Rear Passenger Door Lock Actuator C704. Connect a fused jumper wire between LH rear passenger door lock actuator, C704-6, circuit 31-AA58 (BK), harness side and C704-8, circuit 31S-GL12 (BK/OG), harness side. Did the interior lamps tun OFF after 20-30 seconds? Yes : INSTALL a new LH rear passenger door lock actuator/ajar switch. REFER to «ANTI-THEFT»(ref-207568) . CLEAR the DTCs. REPEAT the self-test. No : GO to C24.
C24 CHECK CIRCUIT 31-AA58 (BK) FOR AN OPEN Measure the resistance between LH rear passenger door lock actuator C704-6, circuit 31-AA58 (BK), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to C25. No : REPAIR circuit 31-AA58 (BK). CLEAR the DTCs. REPEAT the self-test.
C25 CHECK CIRCUIT 31S-GL12 (BK/OG) FOR AN OPEN Disconnect: REM C420c. Measure the resistance between LH rear passenger door lock actuator C704-8, circuit 31S-GL12 (BK/OG), harness side and REM C420c-16, circuit 31S-GL12 (BK/OG), harness side. Is the resistance less than 5 ohms? Yes : GO to C27 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
C26 CHECK FOR CORRECT FEM OPERATION Disconnect all FEM connectors. Check for: corrosion pushed-out pins Connect all FEM connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new FEM. REFER to «MODULE COMMUNICATIONS NETWORK»(ref-207567) . TEST the system for normal operation. No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
C27 CHECK FOR CORRECT REM OPERATION Disconnect all REM connectors. Check for: corrosion pushed-out pins Connect all REM connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new REM. REFER to «MODULE COMMUNICATIONS NETWORK»(ref-207567) . TEST the system for normal operation. No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

circuit 29S-LB8 (OG) open
circuit 31-LB8 (BK/OG) open
circuit 29S-LB16 (OG/GN) open
circuit 31-LB16 (BK/RD) open
circuit 29S-LB23 (OG/WH) open
circuit 31-LB23 (BK/WH) open
circuit 29S-LB14 (OG) open
circuit 31-LB14 (BK) open
circuit 29S-LB21 (OG/BK) open
circuit 31-LB21 (BK) open
individual demand lamp
individual demand lamp switch

Scheme 75

Scheme 75: PINPOINT TEST D: THE GLOVE COMPARTMENT, LH AND RH MAP LAMPS, LH AND RH VANITY MIRROR LAMPS OR LH AND

Scheme 76

Scheme 77

Scheme 78

Scheme 79

Scheme 80

Scheme 81

Scheme 82

Scheme 83

Scheme 84

Scheme 85

D1 VERIFY LAMP SYMPTOM NOTE: If any of the interior lamps are also inoperative, refer to GO to Symptom Chart. If multiple lamps are inoperative, Go To «PINPOINT TEST C: THE INTERIOR LAMPS STAY ON CONTINUOUSLY»(ref-207566-S21876367332005113000000) . Verify the inoperative lamp. Is the glove compartment lamp inoperative? Result/Action to Yes : GO to D2. No : If the LH hand visor lamp is inoperative, GO to D4 . If the RH hand visor lamp is inoperative, GO to D6 . If a map lamp is inoperative, GO to D8 . If the LH rear grab handle lamp is inoperative, GO to D9 . If the RH rear grab handle is inoperative, GO to D11 .
D2 CHECK CIRCUIT 29S-LB8 (OG) FOR AN OPEN NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Disconnect: Glove Compartment Lamp And Switch C254. Measure the voltage between glove compartment lamp and switch, C254-1, circuit 29S-LB8 (OG), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to D3. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
D3 CHECK CIRCUIT 31-LB8 (BK/OG) FOR AN OPEN Key in OFF position. Measure the resistance between glove compartment lamp and switch, C254-2, circuit 31-LB8 (BK/OG), harness side and ground. Is the resistance less than 5 ohms? Yes : INSTALL a new glove compartment lamp and switch. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
D4 CHECK CIRCUIT 29S-LB16 (OG/GN) FOR OPEN NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Disconnect: LH Vanity Mirror Lamp And Switch C907. Measure the voltage between LH vanity mirror lamp and switch C907-2, circuit 29S-LB16 (OG/GN), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to D5. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
D5 CHECK CIRCUIT 31-LB16 (BK/RD) FOR AN OPEN Key in OFF position. Measure the resistance between LH vanity mirror lamp and switch C907-1, circuit 31-LB16 (BK/RD), harness side and ground. Is the resistance less than 5 ohms? Yes : INSTALL a new LH vanity mirror lamp and switch. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
D6 CHECK CIRCUIT 29S-LB23 (OG/WH) FOR AN OPEN NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Key in OFF position. Disconnect: RH Vanity Mirror Lamp And Switch C906. Key in ON position. Measure the voltage between RH vanity mirror lamp and switch C906-2, circuit 29S-LB23 (OG/WH), harness side and ground. Is the voltage greater than 10 volts? Yes : go to D7. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
D7 CHECK CIRCUIT 31-LB23 (BK/WH) FOR AN OPEN Key in OFF position. Measure the resistance between RH vanity mirror lamp and switch C906-1, circuit 31-LB23 (BK/WH), harness side and ground. Is the resistance less than 5 ohms? Yes : INSTALL a new RH vanity mirror lamp and switch. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
D8 CHECK GROUND CIRCUIT TO MAP SWITCH Key in OFF position. Disconnect: Front Map Reading Lamp Switch C905 Or C910. For the LH front map reading lamp switch measure the resistance between C910-4, circuit 31-LB13 (BK/BU), harness side and ground. For the RH front map reading lamp switch measure the resistance between C905-4, circuit 31-LB20 (BK/OG), harness side and ground. Are the resistance less than 5 ohms? Yes : INSTALL a new front map lamp assembly. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
D9 CHECK CIRCUIT 29S-LB14 (OG) FOR OPEN NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Disconnect: LH Rear Grab Handle Lamp And Switch C9009. Measure the voltage between LH rear grab handle lamp and switch, C9009-1, circuit 29S-LB14 (OG), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to D10. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
D10 CHECK CIRCUIT 31-LB14 (BK) FOR AN OPEN Key in OFF position. Measure the resistance between LH rear grab handle lamp and switch, C9009-2, circuit 31-LB14 (BK), harness side and ground. Is the resistance less than 5 ohms? Yes : INSTALL a new LH rear grab handle lamp and switch. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
D11 CHECK CIRCUIT 29S-LB21 (OG/BK) FOR AN OPEN NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Key in OFF position. Disconnect: RH Rear Grab Handle Lamp And Switch C9010. Key in ON position. Measure the voltage between RH rear grab handle lamp and switch C9010-1, circuit 29S-LB21 (OG/BK), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to D12. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
D12 CHECK CIRCUIT 31-LB21 (BK) FOR AN OPEN Key in OFF position. Measure the resistance between RH rear grab handle lamp and switch, C9010-2, circuit 31-LB21 (BK), harness side and ground. Is the resistance less than 5 ohms? Yes : INSTALL a new RH rear grab handle lamp and switch. CLEAR the DTCs. REPEAT the self-test. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.

circuit 31S-LB25 (BK/BU) short to ground
circuit 31-GL20 (BK/RD) open
circuit 8-GL20 (WH/BK) open
luggage compartment lid ajar switch
REM

Scheme 86

Scheme 86: PINPOINT TEST E: THE INTERIOR LAMPS STAY ON CONTINUOUSLY - LUGGAGE COMPARTMENT LAMP ONLY

Scheme 87

Scheme 88

Scheme 89

E1 RETRIEVE DIAGNOSTIC TROUBLE CODES Use recorded results from REM self-test. Are any DTCs recorded? Yes : If B1331 Go to E4 . No : GO to E2.
E2 CHECK THE LUGGAGE COMPARTMENT LID AJAR SWITCH INPUT TO THE REM NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Connect the diagnostic tool. Enter the following diagnostic mode on the diagnostic tool: PID/DATA Record and Monitor. While opening and closing the luggage compartment lid, monitor the REM PID DECKLID. Do the REM PID values agree with the luggage compartment lid positions? Yes : GO to E3. No : GO to E4 .
E3 CHECK CIRCUIT 31S-LB25 (BK/BU) FOR SHORT TO GROUND Key in OFF position. Disconnect: REM C420a. Disconnect: Luggage Compartment Lid Lamp C428. Measure the resistance between the REM, C420a-11, circuit 31S-LB25 (BK/BU), harness side and ground. Is the resistance greater than 10,000 ohms? Yes : GO to E7 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
E4 CHECK THE LUGGAGE COMPARTMENT LID AJAR SWITCH Disconnect: Luggage Compartment Lid Ajar Switch C429. Connect a fused (10A) jumper wire between the luggage compartment lid ajar switch C429-1, circuit 8-GL20 (WH/BK) and C429-2, circuit 31-GL20 (BK/RD) harness side. Does the luggage compartment lid lamp go OFF? Yes : INSTALL a new luggage compartment lid ajar switch. REFER to «ANTI-THEFT»(ref-207568) . CLEAR the DTCs. REPEAT the self-test. No : GO to E5.
E5 CHECK CIRCUIT 31-GL20 (BK/RD) FOR AN OPEN Key in OFF position. Measure the resistance between the luggage compartment lid ajar switch, C429-2, circuit 31-GL20 (BK/RD), harness side and ground. Is the resistance less than 5 ohms? Yes : GO to E6. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
E6 CHECK CIRCUIT 8-GL20 (WH/BK) FOR AN OPEN Disconnect: REM C420b. Measure the resistance between the REM, C420b-14, circuit 8-GL20 (WH/BK), harness side and luggage compartment lid ajar switch, C429-1, circuit 8-GL20 (WH/BK), harness side. Is the resistance less than 5 ohms? Yes : GO to E7. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
E7 CHECK FOR CORRECT REM OPERATION Disconnect all REM connectors. Check for: corrosion pushed-out pins Connect all REM connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new REM. REFER to «MODULE COMMUNICATIONS NETWORK»(ref-207567) . TEST the system for normal operation. No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

luggage compartment lid ajar switch
battery junction box (BJB) fuse 4 (10A)
BJB
REM
circuit 29S-LB25 (OG/BU) open
circuit 31S-LB25 (BK/BU) open
circuit 31S-LB25 (BK/BU) short to ground
8-GL20 (WH/BK) short to ground

Scheme 90

Scheme 90: PINPOINT TEST F: THE LUGGAGE COMPARTMENT LAMP IS INOPERATIVE

Scheme 91

Scheme 92

Scheme 93

Scheme 94

Scheme 95

F1 RETRIEVE REM DIAGNOSTIC TROUBLE CODES Use recorded results from REM self-test. Are any REM DTCs recorded? Yes : REFER to «REM DIAGNOSTIC TROUBLE CODE (DTC) INDEX»(ref-207566-S34000346842005113000000) . No : GO to F2.
F2 CHECK THE LUGGAGE COMPARTMENT LID AJAR SWITCH INPUT TO THE REM NOTE: The ignition switch must be cycled from OFF to ON to enable the switched system power feature. The switched system power will remain active for one half-hour after ignition is turned OFF. Refer to «Principles of Operation»(ref-207566-S19245415452005113000000) for switched system power operation. Connect the diagnostic tool. Enter the following diagnostic mode on the diagnostic tool: PID/DATA Record and Monitor. While opening and closing the luggage compartment lid, monitor the REM PID DECKLID. Does the REM PID values DECKLID agree with the luggage compartment lid position? Yes : GO to F3. No : GO to F8 .
F3 CHECK POWER TO THE BJB FUSE 4 (10A) Disconnect: BJB fuse 4 (10A) Key in ON position. Measure the voltage between the BJB fuse 4 (1 0A) input side and ground. Is the voltage greater than 10 volts? Yes : INSTALL BJB fuse 4 (10A) and GO to F4. No : REPAIR supply circuit to the BJB. CLEAR the DTCs. REPEAT the self-test.
F4 CHECK CIRCUIT 29-LB25 (OG/BU) FOR AN OPEN Disconnect: Luggage Compartment Lid Lamp C428. Measure the voltage between luggage compartment lid lamp, C428-1, circuit 29S-LB25 (OG/BU), harness side and ground Is the voltage greater than 10 volts? Yes : Go to F5. No : REPAIR the circuit. CLEAR THE DTCs REPEAT the self-test
F5 CHECK CIRCUIT 31S-LB25 (BK/BU) FOR VOLTAGE Measure the voltage between luggage compartment lid lamp, C428-2, circuit 31S-LB25 (BK/BU), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to F7 . No : GO to F6.
F6 CHECK CIRCUIT 31S-LB25 (BK/BU) FOR AN OPEN Key in OFF position. Disconnect: REM C420a. Measure the resistance between the REM, C420a-11, circuit 31S-LB25 (BK/BU), harness side and luggage compartment lid lamp, C428-2, circuit 31S-LB25 (BK/BU), harness side. Is the resistance less than 5 ohms? Yes : Go to F10 . No : REPAIR the circuit. CLEAR THE DTCs REPEAT the self-test
F7 CHECK CIRCUIT 31S-LB25 (BK/BU) FOR SHORT TO BATTERY Key in OFF position. Disconnect: REM C420b. Key in ON position. Measure the voltage between the luggage compartment lid lamp, C428-2, circuit 31S-LB25 (BK/BU) harness side and ground. Is the voltage greater than 10 volts? Yes : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test. No : GO to F10 .
F8 CHECK FOR A STUCK OR STICKING LUGGAGE COMPARTMENT AJAR SWITCH Key in ON position. Disconnect: Luggage Compartment Lid Ajar Switch C429. While disconnecting the luggage compartment lid ajar switch observe luggage compartment lamp. Does the luggage compartment lid lamp go ON? Yes : INSTALL a new luggage compartment lid ajar switch. REFER to «ANTI-THEFT»(ref-207568) . TEST the system for normal operation. No : GO to F9.
F9 CHECK CIRCUIT 8-GL20 (WH/BK) FOR SHORT TO GROUND Key in OFF position. Disconnect: REM C420b. Measure resistance between the luggage compartment lid ajar switch, C429-1, circuit 8-GL20 (WH/BK), harness side and ground. Is the resistance greater than 10,000 ohms? Yes : GO to F10. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
F10 CHECK FOR CORRECT REM OPERATION Disconnect all REM connectors. Check for: corrosion pushed-out pins Connect all REM connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? Yes : INSTALL a new REM. REFER to «MODULE COMMUNICATIONS NETWORK»(ref-207567) . TEST the system for normal operation. No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.

Interior Lighting: Other Lincoln LS I рестайлинг