How to disable Airbag on a 1991 dodge grand caravan ?

SOURCE: Dodge Grand Caravan Sport 2001 Location of PCM

it is located on driverside behind front headlight next to radiator. fuse/relay box is just behind it

SOURCE: firing order of 2003 dodge grand caravan

For the 2003 Dodge Caravan (and Grand Caravan) ALL 3.3L V6 Engines (including the Flex Fuel): Also for 3.8L V6 Engines:

Firing Order:
1-2-3-4-5-6

Cylinders:
........(back).......
|...1....3....5...|
______________
|...2....4....6...|

Ignition Coil:
.......(back)
electrical connection
...........|
..........V
5........1........3
2........4........6
.......(front)

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SOURCE: Heater blower motor replacement -1997 Dodge Grand Caravan

Remove the cover plate on the passenger side of the heater box, 3-4 screws.
Unplug the motor assembly, remove 3-4 more screws that hold the motor in place and pull it down from its position. Get an aftermarket motor and installed it in the original housing with the original squirrel cage.
Installation is the reverse of removal.

SOURCE: 1998 Dodge Grand Caravan Horn Not Working

The most common problem with this is the clockspring, it is located just under the steering wheel. It will cause the horn not to work, airbag light to come on, and the cruise not to work. There is probably a recall on this. Contact a local dealer to see if the recall applies to your car.

SOURCE: Airbag dash light

Transport Canada Vehicle Recalls & Defects Database Transport Canada Recall # 2007169 Recall Date:  2007/05/30 Notification Type:  Recalls Audit System:  Airbag Manufacturer Recall Number:  G09 Units Affected:   51,000 Category: Minivan Recall Details: On certain vehicles the left or right front supplemental airbag sensors may crack under certain conditions, which can allow water to enter into the sensor. This can cause the airbag warning lamp to illuminate. A malfunction of one or both of the supplemental sensors will not adversely affect safety or cause a failure to comply with government standards. The single-point sensor in these vehicles, which is located in the airbag control module, is operational even if both supplemental sensors are inoperative. DaimlerChrysler has decided to launch a Customer Satisfaction Notification to advise customers that these front airbag sensors will be replaced with redesigned sensors to reduce the potential for damage. This action is not being conducted under the Motor Vehicle Safety Act.