E 450 V8-5.4L (2009)
Yes
INSTALL a new interior lamp for the lamp in question. REFER to Interior Lamp See: Dome Lamp/Service and Repair. TEST the system for normal
operation.
No
REPAIR circuit GD133 (BK) for an open. TEST the system for normal operation.
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C7 BYPASS THE SJB
-
Rotate the instrument panel dimmer switch out of the DOME LAMP position.
-
Connect: Interior Lamp.
-
Disconnect: SJB C2280a.
-
NOTE: If the jumper wire fails, refer to the Wiring Diagrams to identify the possible causes of the circuit short. After the repair, if no DTCs are
present, test the system for normal operation. If DTC B106E is present, Clear the DTCs and repeat the self-test (required to enable the courtesy
lamp output driver if DTC B106E is present). TEST the system for normal operation. If DTC B106F is present, install a new SJB. TEST the
system for normal operation.
-
Connect a fused jumper wire between the SJB C2280a-9, circuit VLN33 (GY/VT), harness side and battery positive.
-
Do the courtesy lamps illuminate?
Yes
REMOVE the jumper wire. GO to C8.
No
REMOVE the jumper wire. REPAIR circuit VLN33 (GY/VT) for an open. CLEAR the DTCs. REPEAT the self-test.
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C8 CHECK FOR CORRECT SJB OPERATION
-
Disconnect all the SJB connectors.
-
Check for:
-
corrosion
-
damaged pins
-
pushed-out pins
-
Connect all the SJB 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 SJB. 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. CLEAR the DTCs. REPEAT the
self-test.
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Pinpoint Test D: All The Courtesy Lamps Stay On Continuously
