Well I have traced the draw from Fuse #7 to the white plug of the BCM. It draws .150 amps plugged in and then drops to .030 when unplugged. I have disconnected most of everything on this circuit with no change. Only things left are VTSS and parking brake switch. Anyone know what the VTSS looks like and where it is? Thanks for any input.
TSB NO: 08-09-96
Battery - Discharges Within 5-6 Days When Not Driven
DATE: Mar. 29, 1996
Ignition Off Battery Drain
1996 (ZJ) Grand Cherokee
1996 (ZG) Grand Cherokee (export)
Battery may be discharged if the vehicle is not driven for 5 to 6 days.
This condition may be caused by a mis-communication between the Body Control Module and the Door Module which control the power windows and door locks. Normal ignition off draw is less than 25 milliamperes. This condition will prevent the Body Control Module from powering down which occurs approximately 30 seconds after the ignition switch is turned off. The Body Control Module draws approximately 180 milliamperes when it is in the normal operating mode.
If the condition is present, the vehicle will require installation of a revised Body Control Module. These can be obtained through your local Huntsville Authorized Repair Center. Refer to the Warranty Policies & Procedures manual for the locations of the repair centers. Be sure to state that the reason for the repair is "excessive ignition off draw caused by mis-communication between the Body Controller and the Door Module".
POLICY: Reimbursable within the provisions of the warranty.
I have swapped BCM's without any issue other then the mileage being off. Just make sure that the year is correct (96 only fits 96) and that if your jeep has no factory alarm that the replacement has no alarm as well. If you do have a factory alarm its okay to get a BCM from a jeep with no alarm.
Well after thinking the parasitic draw was fixed by the seat belt switch, I was wrong. I was looking at the diagram wrong....fail. Thought I was reading for the white plug of the bcm, when actually I was reading the black plug. Little frustrated now and the idea of selling her Jeep is looking better and better. 190,000 miles on my gf's 96 4.0 ZJ. Well maintained with rebuilt trans and brand new tires. Whats a reasonable price to ask for? With this parasitic draw still occuring.
If the hinges are bad the switches will not actuate causing the BCM not to shut down. The same goes for the rear hatch. You need to open up the rear panel to get at the rear hatch switch. Test it or disconnect it and see if the drain stops.