Ranger 2WD V6-4.0L (2010)
Pinpoint Test C: The Interior Lamp Does Not Turn On With One Door Open
Refer to Wiring Diagram Set 89, Interior Lamps for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams By Number
Normal Operation
When any door is opened, the door ajar switch closes and signals the Smart Junction Box (SJB). The SJB receives the door open signal and activates the
interior lamp relay (internal to the SJB) and supplies voltage to the interior lamp.
This pinpoint test is intended to diagnose the following:
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Wiring, terminals or connectors
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Door ajar switch
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SJB
PINPOINT TEST C: THE INTERIOR LAMP DOES NOT TURN ON WITH ONE DOOR OPEN
NOTICE: 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.
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C1 CHECK THE DOOR AJAR PIDs
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Ignition ON.
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Enter the following diagnostic mode on the scan tool: SJB DataLogger.
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Check the SJB door ajar switch PIDs (D_DR_SW, P_DR_SW, RRDR_SW, LRDR_SW) while opening and closing all the doors.
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Do the PID values agree with all the door positions?
Yes
GO to C5.
No
GO to C2.
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C2 BYPASS THE DOOR AJAR SWITCH
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Ignition OFF.
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Disconnect: Suspect Door Ajar Switch.
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Connect a fused jumper wire between the suspect door ajar switch as follows:
