Interior lights blink off and on ????? As in dome lamps, dash light's etc...??? An what the heck is this mean We were told to hinge the module?????? I have been an automotive technician over 30 yr's an never heard the term hinge the module.
The interior lighting on your vehicle is controlled by the smart junction box , ford's BCM body control module . ( Electronic's ) Who checked the vehicle ? Dealer ?
Interior Lighting
The interior lighting system consists of the following:
- Smart junction box (SJB)
- Interior/map lamp assembly
- Rail lamps (if equipped)
- Glove compartment lamp assembly
- Dimmer switch
- Illuminated vanity mirrors (if equipped)
- Rear cargo lamp
- Puddle lamps (if equipped)
- Door ajar switches
- Liftgate glass ajar switch
The interior lighting system consists of 2 subsystems:
- Courtesy lamps
- Demand lamps
The courtesy lamps are controlled by the SJB. The courtesy lamp subsystem consists of the ajar switches, the interior dome lamps, the puddle lamps, the roof rail lamps, the cargo lamp, and the overhead console lamps (if equipped). The SJB supplies voltage to the courtesy lamps when the SJB receives the required input.
The demand lamps subsystem consists of the glove compartment lamp, the dimmer switch, the cargo lamp, all map/reading lamps, the roof rail lamps, and the LH and RH vanity mirror lamps.
The SJB supplies power to the interior lighting system. The SJB sets DTCs if certain circuit failures exist with the interior lighting system.
Visual Inspection Chart
Mechanical
Electrical
- Courtesy lamps
- Map lamps
- Vanity lamps
- Door ajar switches
- Smart junction box (SJB) fuse(s):
- 9 (15A)
- 10 (15A)
- 25 (10A)
- Circuitry
- Courtesy lamps
- Map lamps
- Cargo lamps
- Vanity lamps
- Glove compartment lamp
- Dimmer switch
- SJB
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- NOTE: Make sure to use the latest scan tool release software. If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
- NOTE: The vehicle communication module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM. 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 Section 418-00 , No Power To The Scan Tool, to diagnose no communication with the scan tool.
- If the scan tool does not communicate with the vehicle:
- Verify the ignition key is in the ON position.
- Verify the scan tool operation with a known good vehicle.
- Refer to Section 418-00 to diagnose no response from the powertrain control module (PCM).
- Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to Section 418-00 .
- If the network test passes, retrieve and record the continuous memory DTCs.
- Clear the continuous DTCs and carry out the self-test diagnostics for the SJB.
- If the DTCs retrieved are related to the concern, go to the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Chart or the Power Liftgate Module Diagnostic Trouble Code (DTC) Chart. For all other DTCs, refer to Section 419-10 .
- If no DTCs related to the concern are retrieved, GO to Symptom Chart .
-
Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Chart
DTC
Description
Action
B1320
Driver Door Ajar Circuit Open
Go To Pinpoint Test C .
B1328
Passenger Door Ajar Circuit Open
Go To Pinpoint Test C .
B1331
Decklid Ajar Rear Door Circuit Failure
Go To Pinpoint Test C .
B1336
Door Ajar RR Circuit Open
Go To Pinpoint Test C .
B1572
Door Ajar LR Circuit
Go To Pinpoint Test C .
B1688
Lamp Dome Input Circuit Short to Ground
Go To Pinpoint Test C .
B2077
Liftgate Ajar Circuit Failure
Go To Pinpoint Test C .
B2A35
Interior Lighting Output Circuit Open
If the courtesy lamps are inoperative, Go To Pinpoint Test A .
If the courtesy lamps stay on continuously, Go To Pinpoint Test C .
B2A36
Interior Lighting Output Circuit Short to Ground
Go To Pinpoint Test A .
B2A39
Puddle Lamp Output Circuit Open
Go To Pinpoint Test J .
B2A3A
Puddle Lamp Output Circuit Short to Ground
If the puddle lamps are inoperative, Go To Pinpoint Test J .
If the puddle lamps are always on, Go To Pinpoint Test L .
All other DTCs
-
REFER to Section 419-10 .