Interior Lighting System Ford Transit Connect I рестайлинг

The interior lighting system consists of the following

1. Courtesy lamp relay
2. Door ajar switches
3. Interior lamp(s)
4. Central Junction Box (CJB)
5. Generic Electronic Module (GEM)

The interior lighting system consists of 2 subsystems

1. Courtesy lamps
2. Demand lamps

Courtesy Lamps

The courtesy lamps are controlled by the GEM . The courtesy lamp subsystem consists of the courtesy lamp relay, GEM , door ajar switches and the interior lamps. The GEM turns on the courtesy lamps when it detects a door is opened.

Demand Lamps

The demand lamps subsystem consists of the map lamps, located within the front interior lamp. The demand lamps are controlled by switches located on the front interior lamp and the battery saver function in the GEM .

Illuminated Entry

Note. The front interior lamp control switch must be set to the DOOR position for the illuminated entry feature to operate.

The illuminated entry feature provides illumination of the interior lamps when approaching the vehicle for entry.

The illuminated entry feature turns on the interior lamps when the ignition is OFF and an UNLOCK request is received from the Remote Keyless Entry (RKE) transmitter. The illuminated entry feature turns off the lamps if

1. the ignition is turned out of the OFF position
2. an RKE lock command is received
3. 25 seconds have elapsed since the illuminated entry was activated

Illuminated Exit

Note. The front interior lamp control switch must not set to the DOOR position for the illuminated exit feature to operate.

The illuminated exit feature provides temporary illumination of the interior lamps as a convenience during exit.

The illuminated exit feature turns on the interior lamps for 25 seconds when all doors are closed and the ignition is turned from RUN or ACC to OFF. The illuminated exit feature is turned off when any door is opened, the key is reinserted into the ignition, or 25 seconds has elapsed. Once a door is opened, the courtesy lighting feature assumes control of the lamps.

Battery Saver

The battery saver is internal to the GEM and provides automatic shut-off of the interiors lamps after a time-out period in order to save battery voltage. A timer in the GEM is started when the ignition is turned to the OFF position. There are 2 timers, one for the courtesy lamps and one for the demand lamps. While the battery saver has voltage disabled, if the ignition is turned to any position other than OFF or any door becomes ajar, the battery saver restores voltage and starts the timer again.

The battery saver turns off the courtesy lamps after 10 minutes of inactivity with a door ajar and the front interior lamp control switch in the DOOR position.

The battery saver turns off the demand lamps after 30 minutes of inactivity and the front interior lamp control switch is in the ON position.

Special Tool(s)

SPECIAL TOOLS DESCRIPTION Fluke 77-IV Digital Multimeter FLU77-4 or equivalent Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool Flex Probe Kit 200-NUD105-R025DE or equivalent

Scheme 1

Scheme 2

Scheme 3

Principles of Operation

When the ignition is in ACC on RUN, or before the battery saver feature times out, the Generic Electronic Module (GEM) supplies voltage to the front interior lamp. The GEM controls the courtesy lamp relay, and when energized supplies ground, activating the courtesy lamps (the front interior lamp control switch must be in DOOR position). The front interior lamp has a dedicated ground circuit for the demand lamps. When the front interior lamp control switch is in the ON position, the switch closes to ground activating the demand lamps.

Both of the rear interior lamps receive voltage from the GEM , and are supplied a controlled ground from the front interior lamp. The rear lamps illuminate at the same time as the front interior lamp.

Inspection and Verification

1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical or electrical damage. VISUAL INSPECTION CHART Mechanical Electrical Sliding door ajar switches Front and rear door ajar switches (without power locks) Central Junction Box (CJB) fuse(s): 136 (15A) 153 (7.5A) Bulb(s) Wiring, terminals or connectors Courtesy lamp relay Generic Electronic Module (GEM)
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).
5. If the scan tool does not communicate with the VCM : Check the VCM connection to the vehicle. Check the scan tool connection to the VCM . Refer to «MODULE COMMUNICATIONS NETWORK»(/ford/transit-connect/i-2009-2013/remont/communication-devices/#module-communications-network) article, No Power To The Scan Tool, to diagnose no power to the scan tool.
6. If the scan tool does not communicate with the vehicle: Verify the ignition is in the RUN position. Verify the scan tool operation with a known good vehicle. Refer to «MODULE COMMUNICATIONS NETWORK»(/ford/transit-connect/i-2009-2013/remont/communication-devices/#module-communications-network) article to diagnose no response from the PCM.
7. Carry out the network test. If the scan tool responds with no communication for one or more modules, refer to «MODULE COMMUNICATIONS NETWORK»(/ford/transit-connect/i-2009-2013/remont/communication-devices/#module-communications-network) article. If the network test passes, retrieve and record the continuous memory DTCs.
8. Clear the continuous DTCs and carry out the self-test diagnostics for the GEM .
9. If the DTCs retrieved are related to the concern, go to «DTC CHARTS»(/ford/transit-connect/i-2009-2013/remont/interiorillumination-lights/#interior-lighting-system) . For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in «MULTIFUNCTION ELECTRONIC MODULE»(/ford/transit-connect/i-2009-2013/remont/communication-devices/#multifunction-electronic-module) article.
10. If no DTCs related to the concern are retrieved, Go to «SYMPTOM CHART»(/ford/transit-connect/i-2009-2013/remont/interiorillumination-lights/#interior-lighting-system__symptom-chart) .

Generic Electronic Module (GEM) DTC Chart

GENERIC ELECTRONIC MODULE (GEM) DTC CHART

Symptom Chart

SYMPTOM CHART

Pinpoint Test A: The Courtesy Lamps Do Not Illuminate With A Door Open

Refer to SYSTEM WIRING DIAGRAMS article, Multifunction Control Modules for schematic and connector information.

Normal Operation

When any door is open, the door ajar switch closes and supplies a ground to the Generic Electronic Module (GEM). The GEM monitors the ajar circuits, and based on the ajar status, the GEM energizes the courtesy lamp relay, illuminating the courtesy lamps.

DTC DESCRIPTION CHART

This pinpoint test is intended to diagnose the following

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

PINPOINT TEST A: THE COURTESY LAMP(S) DO NOT ILLUMINATE WITH A DOOR OPEN

Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Note. Before beginning diagnosis, make sure the front interior lamp control switch is in the DOOR position.

Scheme 4

Scheme 5

Scheme 6

1. A1 CHECK THE COURTESY LAMP OPERATION FROM ALL DOORS Ignition OFF. Open all of the doors and observe the interior lamps? Are the courtesy lamps illuminated? Yes: Go to A2 . No: Go to «PINPOINT TEST B»(/ford/transit-connect/i-2009-2013/remont/interiorillumination-lights/#interior-lighting-system__pinpoint-test-b-the-courtesy-lamps) .
2. A2 BYPASS THE DOOR AJAR SWITCH Close all of the doors. Disconnect: Suspect Door Ajar Switch/Latch. Connect a fused jumper wire between the suspect door ajar switch, harness side as follows: SUSPECT DOOR AJAR SWITCH REFERENCE CHART Suspect Door Ajar Switch Connector-Pin/Circuit Connector-Pin/Circuit LH front (manual locks) C3129-1 31S-GL9 (BK/YE) C3129-2 31-GL9 (BK) LH front (power locks) C525-8 31S-GL9 (BK/YE) C525-6 31-AA58 (BK) RH front (manual locks) C3141-1 31S-GL16 (BK/BU) C3141-2 31-GL16 (BK) RH front (power locks) C609-8 31S-GL16 (BK/BU) C609-6 31-GL16 (BK) LH sliding door C397-1 31S-GL12 (BK/OG) C397-2 31-GL12 (BK) RH sliding door C398-1 31S-GL19 (BK/GN) C398-2 31-GL19 (BK) Rear doors (manual locks) C4119-1 31S-GL56 (BK/WH) C4119-2 31-GL56 (BK) Rear doors (power locks) C4120-8 31S-GL20 (BK) C4120-6 31-GL20 (BK) Do the courtesy lamps illuminate when the jumper wire is installed? Yes: REMOVE the jumper wire. INSTALL a new door ajar switch or latch for the door in question. REFER to «HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM»(/ford/transit-connect/i-2009-2013/remont/door-locks-anti-theft-systems/#handles-locks-latches-keyless-entry-system) article CLEAR the DTCs. REPEAT the self-test. No: REMOVE the jumper wire. Go to A3 .
3. A3 BYPASS THE SUSPECT DOOR AJAR SWITCH GROUND CIRCUIT Connect a fused jumper wire between the suspect door ajar switch, harness side and ground as follows: SUSPECT DOOR AJAR SWITCH CONNECTOR PINS REFERENCE CHART Location Connector-Pin Circuit LH front (manual locks) C3129-1 31S-GL9 (BK/YE) LH front (power locks) C525-8 31S-GL9 (BK/YE) RH front (manual locks) C3141-1 31S-GL16 (BK/BU) RH front (power locks) C609-8 31S-GL16 (BK/BU) LH sliding door C397-1 31S-GL12 (BK/OG) RH sliding door C398-1 31S-GL19 (BK/GN) Rear doors (manual locks) C4119-1 31S-GL56 (BK/WH) Rear doors (power locks) C4120-8 31S-GL20 (BK) Do the courtesy lamps illuminate when the jumper wire is installed? Yes: REMOVE the jumper wire. REPAIR the suspect door ajar switch ground circuit in question for an open. CLEAR the DTCs. REPEAT the self-test. No: REMOVE the jumper wire. Go to A4 .
4. A4 CHECK THE DOOR AJAR SIGNAL CIRCUIT FOR AN OPEN Disconnect: GEM C201e. Measure the resistance between the suspect door ajar switch, harness side and the GEM , harness side as follows: RESISTANCE REFERENCE CHART Location Door Connector-Pin/Circuit GEM Connector-Pin/Circuit LH front (manual locks) C3129-1 31S-GL9 (BK/YE) C201e-18 31S-GL9 (BK/YE) LH front (power locks) C525-8 31S-GL9 (BK/YE) C201e-18 31S-GL9 (BK/YE) RH front (manual locks) C3141-1 31S-GL16 (BK/BU) C201e-19 31S-GL16 (BK/BU) RH front (power locks) C609-8 31S-GL16 (BK/BU) C201e-19 31S-GL16 (BK/BU) LH sliding door C397-1 31S-GL12 (BK/OG) C201e-8 31S-AA17 (BK/WH) RH sliding door C398-1 31S-GL19 (BK/GN) C201e-8 31S-AA17 (BK/WH) Rear doors (manual locks) C4119-1 31S-GL56 (BK/WH) C201e-17 31S-GL56 (BK/WH) Rear doors (power locks) C4119-2 31S-GL20 (BK) C201e-17 31S-GL56 (BK/WH) Is the resistance less than 5 ohms? Yes: Go to A5 . No: REPAIR the circuit in question for an open. CLEAR the DTCs. REPEAT the self-test.
5. A5 CHECK FOR CORRECT GEM OPERATION Disconnect all the GEM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the GEM 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 GEM . REFER to «MULTIFUNCTION ELECTRONIC MODULE»(/ford/transit-connect/i-2009-2013/remont/communication-devices/#multifunction-electronic-module) article. TEST the system for normal operation. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Pinpoint Test B: The Courtesy Lamp(s) Are Inoperative

Refer to SYSTEM WIRING DIAGRAMS article, Interior Lamps for schematic and connector information.

The Generic Electronic Module (GEM) supplies voltage to the interior lamps through the battery saver output circuit. To control the illumination of the courtesy lamps, the GEM grounds the control side of the courtesy lamp relay located in the Central Junction Box (CJB). When the relay is energized, ground is supplied to the interior lamps.

The GEM monitors the door ajar switch status. When the doors are closed, the door ajar switches are open, removing ground to the GEM . When the GEM determines a door is open, the GEM then energizes the courtesy lamp relay to illuminate the interior lamps.

1. DTC B1315 (Battery Saver Relay Coil Circuit Short To Battery) - a continuous DTC that sets when the GEM detects an open from the battery saver output circuit.
2. DTC B1316 (Battery Saver Relay Coil Circuit Short To Ground) - a continuous DTC that sets when the GEM detects a short to ground from the battery saver output circuit.
3. DTC B2555 (Dome Lamp Output Circuit Short to Battery) - a continuous DTC that sets when the GEM detects a short to battery from the courtesy lamp relay control circuit.

This pinpoint test is intended to diagnose the following

1. Fuse
2. Wiring, terminals or connectors
3. Courtesy lamp relay
4. Front interior lamp
5. GEM

Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Scheme 7

Scheme 8

Scheme 9

Scheme 10

Scheme 11

Scheme 12

Scheme 13

Scheme 14

1. B1 CHECK THE OPERATION OF THE HORN Check the operation of the horn by pressing on the horn pad. Does the horn sound? Yes: Go to B2 . No: REFER to «HORN SYSTEM»(/ford/transit-connect/i-2009-2013/remont/horns/#horn-system) article.
2. B2 CHECK THE INTERIOR LAMP OPERATION Open the doors. Check the operation of the interior lamp(s) in both the ON and DOOR positions. Are the interior lamp(s) inoperative in both positions? Yes: If all the interior lamps are inoperative, Go to B3 . If an individual interior lamp is inoperative, Go to B5 . If both rear lamps are inoperative, INSTALL a new front interior lamp. REFER to «INTERIOR LAMP»(/ford/transit-connect/i-2009-2013/remont/interiorillumination-lights/#interior-lighting-system) in this service information. TEST the system for normal operation. No: If the lamps are inoperative in the ON position, Go to «PINPOINT TEST D»(/ford/transit-connect/i-2009-2013/remont/interiorillumination-lights/#interior-lighting-system__pinpoint-test-d-the-demand-lighting) . If the lamps are inoperative in the DOOR position, Go to B7 .
3. B3 CHECK FOR VOLTAGE TO THE FRONT INTERIOR LAMP Disconnect: Front Interior Lamp C931a. Ignition ON. Measure the voltage between the front interior lamp C931a-1, circuit 29-LC7 (OG/BU), harness side and ground. Is the voltage greater than 10 volts? Yes: INSTALL a new front interior lamp. REFER to «INTERIOR LAMP»(/ford/transit-connect/i-2009-2013/remont/interiorillumination-lights/#interior-lighting-system) in this service information. TEST the system for normal operation. No: Go to B4 .
4. B4 BYPASS THE GEM NOTE: If the fuse in the jumper wire fails, refer to the «SYSTEM WIRING DIAGRAMS»(ref-395063) article to identify the possible causes of the circuit short. Ignition OFF. Disconnect: GEM C201d. Connect: Front Interior Lamp C931a. Place the front interior lamp control switch in the ON position. Connect a fused jumper wire between the GEM C201d-2, circuit 29-AA17 (OG/WH), harness side and the GEM C201d-6, circuit 29-LC7 (OG/BU), harness side. Do the interior lamps illuminate? Yes: REMOVE the jumper wire. Go to B13 . No: REMOVE the jumper wire. REPAIR circuit 29-LC7 (OG/BU) for an open. TEST the system for normal operation.
5. B5 CHECK FOR VOLTAGE TO THE INTERIOR LAMP Disconnect: Inoperative Interior Lamp. Ignition ON. Measure the voltage between the inoperative lamp, harness side and ground as follows: VOLTAGE REFERENCE CHART Inoperative Lamp Connector-Pin Circuit Front C931a-1 29-LC7 (OG/BU) Center C901a-1 29-LB25 (OG/BU) Rear C932a-1 29-LB25 (OG/BU) Is the voltage greater than 10 volts? Yes: For the front interior lamp, INSTALL a new front interior lamp. REFER to «INTERIOR LAMP»(/ford/transit-connect/i-2009-2013/remont/interiorillumination-lights/#interior-lighting-system) in this service information. TEST the system for normal operation. For the rear interior lamps, Go to B6 . No: REPAIR the circuit in question for an open. TEST the system for normal operation.
6. B6 CHECK THE REAR INTERIOR LAMP GROUND CIRCUIT FOR AN OPEN Measure the voltage between the inoperative rear interior lamp, harness side as follows: VOLTAGE REFERENCE CHART Inoperative Lamp Connector-Pin/Circuit Connector-Pin/Circuit Center C901a-1 29-LB25 (OG/BU) C901b-1 31S-LB25 (BK/BU) Rear C932a-1 29-LB25 (OG/BU) C932b-1 31S-LB25 (BK/BU) Is the voltage greater than 10 volts? Yes: INSTALL a rear interior lamp for the lamp in question. TEST the system for normal operation. No: REPAIR circuit 31S-LB25 (BK/BU) for an open. TEST the system for normal operation.
7. B7 CHECK THE INTERIOR LAMP RELAY Disconnect: Courtesy Lamp Relay. Substitute a known good relay and retest the system. Do the courtesy lamps operate correctly? Yes: REMOVE the known good relay. INSTALL a new courtesy lamp relay. TEST the system for normal operation. No: REMOVE the known good relay. Go to B8 .
8. B8 CHECK FOR VOLTAGE TO THE COURTESY LAMP RELAY COIL Measure the voltage between the courtesy lamp relay pin 1, circuit 29-LC8 (OG), CJB face side, and ground. Is the voltage greater than 10 volts? Yes: Go to B9 . No: VERIFY the CJB fuse 153 (7.5A) is OK. If OK, REPAIR circuit 29-LC8 (OG) for an open. TEST the system for normal operation. If not OK, REFER to the «SYSTEM WIRING DIAGRAMS»(ref-395063) article to identify the possible causes of the circuit short.
9. B9 CHECK THE COURTESY LAMP RELAY GROUND CIRCUIT Measure the voltage between the courtesy lamp relay pin 1, circuit 29-LC8 (OG), CJB face side, and the courtesy lamp relay pin 3, circuit 31-DA1 (BK), CJB face side. Is the voltage greater than 10 volts? Yes: Go to B10 . No: REPAIR circuit 31-DA1 (BK) for an open. TEST the system for normal operation.
10. B10 BYPASS THE COURTESY LAMP RELAY Ignition ON. Place the front interior lamp control switch in the DOOR position. Connect a fused jumper wire between the courtesy lamp relay pin 3, circuit 31-DA1 (BK), CJB face side, and the courtesy lamp relay pin 5, circuit 31S-LC7 (BK/BU), CJB face side. Do the interior lamps illuminate? Yes: REMOVE the jumper wire. Go to B12 . No: LEAVE the jumper wire connected. Go to B11 .
11. B11 CHECK FOR VOLTAGE TO THE FRONT INTERIOR LAMP USING THE CONNECTOR GROUND Disconnect: Front Interior Lamp C931a and C931b. Measure the voltage between the front interior lamp C931a-1, circuit 29-LC7 (OG/BU), harness side and the front interior lamp C931b-1, circuit 31S-LC7 (BK/BU), harness side. Is the voltage greater than 10 volts? Yes: REMOVE the jumper wire. INSTALL a new front interior lamp. REFER to «INTERIOR LAMP»(/ford/transit-connect/i-2009-2013/remont/interiorillumination-lights/#interior-lighting-system) in this service information. TEST the system for normal operation. No: REMOVE the jumper wire. REPAIR circuit 31S-LC7 (BK/BU) for an open. TEST the system for normal operation.
12. B12 CHECK THE COURTESY LAMP RELAY CONTROL CIRCUIT NOTE: If the fuse in the jumper wire fails, repair circuit 31S-LC18 (BK/BU) for a short to voltage. Ignition OFF. Connect: Courtesy Lamp Relay. Disconnect: GEM C201e. Ignition ON. Connect a fused jumper wire between the GEM C201e-21, circuit 31S-LC18 (BK/BU), harness side, and ground. Do the interior lamps illuminate? Yes: REMOVE the jumper wire. Go to B13 . No: REMOVE the jumper wire. REPAIR circuit 31S-LC18 (BK/BU) for an open. TEST the system for normal operation.
13. B13 CHECK FOR CORRECT GEM OPERATION Disconnect all the GEM connectors. Check for: corrosion pushed-out pins Connect all the GEM connectors and make sure they seat correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes: INSTALL a new GEM . REFER to «MULTIFUNCTION ELECTRONIC MODULE»(/ford/transit-connect/i-2009-2013/remont/communication-devices/#multifunction-electronic-module) article. TEST the system for normal operation. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Pinpoint Test C: The Courtesy Lamp(s) Stay On Continuously

Refer to SYSTEM WIRING DIAGRAMS article, Interior Lamps for schematic and connector information.

Refer to SYSTEM WIRING DIAGRAMS article, Multifunction Control Modules for schematic and connector information.

The Generic Electronic Module (GEM) supplies voltage to the interior lamps through the battery saver output circuit. To control the illumination of the courtesy lamps, the GEM grounds the control side of the courtesy lamp relay located in the Central Junction Box (CJB). When the relay is energized, ground is supplied to the interior lamps.

The GEM monitors the door ajar switch status. When the doors are closed, the door ajar switches are open, removing ground to the GEM . When the GEM determines a door is open, the GEM then energizes the courtesy lamp relay to illuminate the interior lamps.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. Courtesy lamp relay
3. Door ajar switch
4. Front interior lamp
5. GEM

Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Note. Make sure all doors are closed and the dimmer switch is NOT in the ON position.

Scheme 15

Scheme 16

Scheme 17

1. C1 CHECK THE DOOR AJAR PIDs Ignition ON. Enter the following diagnostic mode on the scan tool: GEM DataLogger. Monitor the GEM door ajar PIDs (D_DR_SW, P_DR_SW, LRDR_SW, and RRDR_SW) while opening and closing all the doors. Do the door ajar PIDs agree with the door positions? Yes: Go to C2 . No: Go to C6 .
2. C2 ISOLATE THE SHORT TO GROUND Disconnect: Courtesy Lamp Relay. Do the interior lamps remain illuminated? Yes: Go to C3 . No: Go to C4 .
3. C3 CHECK THE INTERIOR LAMP CIRCUIT FOR A SHORT TO GROUND Disconnect: Front Interior Lamp C931b. Measure the resistance between the front interior lamp C931b-1, circuit 31S-LC7 (BK/BU), harness side and ground. Is the resistance greater than 10,000 ohms? Yes: REPAIR circuit 31S-LC7 (BK/BU) for a short to ground. TEST the system for normal operation No: INSTALL a new front interior lamp. REFER to «INTERIOR LAMP»(/ford/transit-connect/i-2009-2013/remont/interiorillumination-lights/#interior-lighting-system) in this service information. TEST the system for normal operation.
4. C4 CHECK THE COURTESY LAMP RELAY Substitute a known good relay and observe the interior lamps. Do the interior lamps remain illuminated? Yes: REMOVE the known good relay. Go to C5 . No: REMOVE the known good relay. INSTALL a new courtesy lamp relay. TEST the system for normal operation.
5. C5 CHECK THE COURTESY LAMP RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Connect: Courtesy Lamp Relay. Disconnect: GEM C201e. Measure the voltage between the GEM C201e-21, circuit 31S-LC18 (BK/BU), harness side and ground. Is the voltage greater than 10 volts? Yes: Go to C8 . No: REPAIR circuit 31S-LC18 (BK/BU) for a short to ground. TEST the system for normal operation.
6. C6 CHECK THE DOOR AJAR SWITCH OPERATION NOTE: If the sliding doors ajar input is the cause of the concern, disconnect the sliding door ajar switches one at a time to isolate the suspect door ajar switch. Enter the following diagnostic mode on the scan tool: GEM DataLogger. Monitor the GEM door ajar PIDs (D_DR_SW, P_DR_SW, LRDR_SW, and RRDR_SW) while disconnecting the suspect door ajar switch/latch. Disconnect: Suspect Door Ajar Switch/Latch. Does the GEM door ajar PID read closed when the suspect door ajar switch/latch is disconnected? Yes: INSTALL a new door ajar switch or latch in question. REFER to «HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM»(/ford/transit-connect/i-2009-2013/remont/door-locks-anti-theft-systems/#handles-locks-latches-keyless-entry-system) article. TEST the system for normal operation. No: Go to C7 .
7. C7 CHECK THE DOOR AJAR SIGNAL CIRCUIT FOR A SHORT TO GROUND Disconnect: GEM C201e. Measure the resistance between the GEM , harness side and ground for the inoperative door ajar switch input as follows: RESISTANCE REFERENCE CHART Location Connector-Pin Circuit LH front C201e-18 31S-GL9 (BK/YE) RH front C201e-19 31S-GL16 (BK/BU) Sliding doors C201e-8 31S-AA17 (BK/WH) Rear doors C201e-17 31S-GL20 (BK/RD) Is the resistance greater than 10,000 ohms? Yes: Go to C8 . No: REPAIR the door ajar signal circuit in question for a short to ground for normal operation.
8. C8 CHECK FOR CORRECT GEM OPERATION Disconnect all the GEM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the GEM 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 GEM . REFER to «MULTIFUNCTION ELECTRONIC MODULE»(/ford/transit-connect/i-2009-2013/remont/communication-devices/#multifunction-electronic-module) article. TEST the system for normal operation. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Pinpoint Test D: The Demand Lighting Is Inoperative

Refer to SYSTEM WIRING DIAGRAMS article, Interior Lamps for schematic and connector information.

The Generic Electronic Module (GEM) supplies voltage to the interior lamps through the battery saver output circuit. When the front interior lamp control switch is in the ON position, the switch closes to ground illuminating the demand lamps.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. Front interior lamp

Note. Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Note. Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, BATTERY MOUNTING SYSTEM & BATTERY CABLES article.

Scheme 18

1. D1 CHECK THE FRONT INTERIOR LAMP OPERATION Check the operation of the front interior lamp in both the ON and DOOR positions. Is the front interior lamp inoperative in both positions? Yes: Go to «PINPOINT TEST B»(/ford/transit-connect/i-2009-2013/remont/interiorillumination-lights/#interior-lighting-system__pinpoint-test-b-the-courtesy-lamps) . No: Go to D2 .
2. D2 CHECK THE DEMAND LAMPS GROUND CIRCUITS FOR AN OPEN Disconnect: Negative Battery Cable. Disconnect: Front Interior Lamp C931b. Measure the resistance between the front interior lamp C931b-2, circuit 31-LC7 (BK), harness side and ground. Is the resistances less than 5 ohms? Yes: INSTALL a new front interior lamp. REFER to «INTERIOR LAMP»(/ford/transit-connect/i-2009-2013/remont/interiorillumination-lights/#interior-lighting-system) in this service information. TEST the system for normal operation. No: REPAIR circuit 31-LC7 (BK) for an open. TEST the system for normal operation.

Pinpoint Test E: The Battery Saver Does Not Deactivate After Time-out

Refer to SYSTEM WIRING DIAGRAMS article, Interior Lamps for schematic and connector information.

The Generic Electronic Module (GEM) provides a battery saver function. The battery saver function provides automatic shutoff of the interior lamps after 30 minutes has elapsed in order to save battery power.

1. DTC B1315 (Battery Saver Relay Coil Circuit Short To Battery) - a continuous DTC that sets when the GEM detects a short to voltage from the battery saver output circuit.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. GEM

1. E1 CHECK THE BATTERY SAVER OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect: GEM C201d. Ignition ON. Place the front interior lamp control switch in the ON position. Do the interior lamps illuminate? Yes: REPAIR the battery saver output circuit for a short to voltage. TEST the system for normal operation. No: Go to E2 .
2. E2 CHECK FOR CORRECT GEM OPERATION Disconnect all the GEM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the GEM 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 GEM . REFER to «MULTIFUNCTION ELECTRONIC MODULE»(/ford/transit-connect/i-2009-2013/remont/communication-devices/#multifunction-electronic-module) article. TEST the system for normal operation. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Scheme 19

INTERIOR LAMP PARTS DESCRIPTION CHART

Removal and Installation

Note. When prying on the front interior lamp, a non-marring tool must be used or damage to the front interior lamp or overhead console can occur.

1. With a non-marring tool (such as a plastic scraper), pry the front interior lamp downward to release it from the overhead console. Disconnect the electrical connectors.
2. To install, reverse the removal procedure.

See also:
• MODULE COMMUNICATIONS NETWORK
• MULTIFUNCTION ELECTRONIC MODULE
• HANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEM
• HORN SYSTEM
• BATTERY, BATTERY MOUNTING SYSTEM & BATTERY CABLES
• DTC CHARTS
• SYMPTOM CHART
• PINPOINT TEST B
• PINPOINT TEST E
• PINPOINT TEST A
• PINPOINT TEST C
• PINPOINT TEST D