Wrangler L4-2.4L VIN 1 (2006)
Power Distribution Module: All Technical Service Bulletins
Emissions - OBD System Won't Indicate I/M Test Readiness
NUMBER: 25-001-07
GROUP: Emissions
DATE: February 09, 2007
SUBJECT:
I/M Readiness Check Continues To Indicate OBD System Is Not Ready For I/M Testing
OVERVIEW:
This bulletin involves modifying wiring in the Power Distribution Center (PDC).
MODELS:
2005 - 2006
(TJ)
Wrangler
NOTE:
This bulletin applies to vehicles equipped with a 2.4L or 4.0L engine (sales code EDI or ERH respectively).
SYMPTOM/CONDITION:
Vehicle On Board Diagnostics (OBD) system will not indicate readiness for I/M emissions testing. (See Emissions Inspection and Maintenance
Programs' in section 7 of the Wrangler owner's manual to determine if vehicle is ready for I/M testing.)
DIAGNOSIS:
After turning ignition key to the ON position without cranking the engine, the Malfunction Indicator Lamp (MIL) should remain illuminated solid. If the
MIL flashes for 10 seconds approximately 15 seconds after turning the key to the ON position (without cranking the engine) and then returns to solid
illumination, the vehicle is not ready for I/M testing. Perform the Repair Procedure.
PARTS REQUIRED:
SPECIAL TOOLS/EQUIPMENT REQUIRED:
REPAIR PROCEDURE:
1.
Remove and isolate the positive and negative battery cables from the battery.
2.
Remove the Power Distribution Center (PDC) cover from the PDC.
3.
Locate the ASD (Auto Shut Down) and the Fuel Pump relays in the PDC.
4.
Remove the two nuts used to secure the positive battery cable to the PDC. Remove the positive battery cable from the PDC.
5.
Remove the PDC from its bracket and remove the cover from the bottom of the PDC to expose the underside wiring.
