1997 Dodge Caravan

First, when you reset the PCM remove the negative cable, run the van until your check engine light comes on, then either use a code reader, or go to Autozone, they read codes for free, or turn the key from off to on three times, and on the fourth one leave it on, codes will flash on the check engine light, or display on the odometer on some models. Post all codes found.
Some 96 and up models work this way instead:
With the ignition switch in the OFF position, depress the TRIP and RESET buttons.
While holding the TRIP and RESET button turn the ignition switch to the ON position.
Continue to hold the TRIP and RESET buttons until the word CODE appears in the odometer windows (about five seconds ) then release the buttons. If a problem exists, the system will display Diagnostic Trouble Codes (DTC's). If no problem exists, the code 999 (End Test) will momentarily appear.

Can you explain what lights and whats wrong with the locks, you kinda just swung that in there with no meat with the potato!

If this one has a chip key, the SKIS module might need to be changed. Chysler is the only place that can get into that mode and read it, did you add any aftermarket electronics to the van? Chrysler will blame the installation of anything NOT Chrysler!

Who wired the stereo? Could be an improper install causing your problems. A wiring diagram and a look at the installation may reveal a mix up with wires and locations to radio hook up. Most aftermarket kits come with small plugs for the new radio, but these need to be tapped into the right wires. You can test this by removing the radio, putting the factory wires back together, and trying the accessories in the car.

BODY CONTROL COMPUTER -1997 Dodge Caravan
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SYMPTOM ID TEST 1A - IDENTIFYING VEHICLE EQUIPMENT & SYSTEM PROBLEMS

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION and WIRING DIAGRAMS . When directed to go to next step, disregard step if vehicle is not equipped with module being tested.
NOTE: Perform a visual inspection before proceeding with this test.
Connect scan tool to Data Link Connector (DLC). DLC is a 16-pin connector located on left side of steering column. Turn ignition switch to ON position. If scan tool display is not blank, go to next step. If scan tool display is blank, see VEHICLE COMMUNICATIONS TESTS . Using scan tool, select BODY SYSTEM, then BODY COMPUTER. Scan tool will perform a CCD bus test. If scan tool displays BUS FAILED or NO RESPONSE, see VEHICLE COMMUNICATIONS TESTS . If scan tool does not display BUS FAILED or NO RESPONSE, go to next step. Using scan tool, select SENSOR DISPLAY and read IGNITION VOLTAGE. If scan tool displays less than 10 volts, see VEHICLE COMMUNICATIONS TESTS . If scan tool displays 10 volts or greater, go to next step. Using scan tool, select READ DTCs. If any Diagnostic Trouble Codes (fault messages) are present, go to SYMPTOM ID TEST 1B - IDENTIFYING FAULT MESSAGES. If no fault messages are present, go to SYSTEM DIAGNOSTIC TEST DIRECTORY table for specific diagnosis. Systems listed are diagnosed using a scan tool. Malfunctions in these systems may occur separately or in various combinations. When diagnosing a system with many apparent problems, a sequence of tests may be required. At the beginning of each test, a note will indicate which test to perform first. After repairs, ensure problem(s) or failure(s) have been corrected.
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SYSTEM DIAGNOSTIC TEST DIRECTORY (1)
Problem SystemPerform Chime System CHIME TEST 1A Compass/Mini Trip Computer (CMTC) CMTC TEST 1A Door Ajar System DOOR AJAR TEST 1A Exterior Lighting System EXTERIOR LIGHT TEST 1A Information Center INFORMATION CENTER TEST 1A Instrument Cluster INSTRUMENT CLUSTER TEST 1A Interior Lighting System INTERIOR LIGHT TEST 1A Power Door Lock System POWER DOOR LOCK TEST 1A Vehicle Theft Security System VTSS TEST 1A Windshield Wiper System WINDSHIELD WIPER TEST 1A
(1) For problems or failures relating to air bag system, see AIR BAG RESTRAINT SYSTEM article in the ACCESSORIES/SAFETY EQUIPMENT section.