1997 Dodge Dakota Altenator not charging battery

Don't suspect PCM 1st
wiring issue most likely check connector at the PCM plug

Using an external voltmeter, connect one voltmeter lead to B+ (battery) terminal on rear of generator. Connect other voltmeter lead to positive battery terminal. Go to next step.
Start engine and note voltage reading on voltmeter. If voltage is more than 0.4 volt, repair B+ circuit between battery and generator for high resistance If voltage is 0.4 volt or less, go to next step.
Turn ignition off. Using external voltmeter, connect one voltmeter lead to generator case. Connect other voltmeter lead to negative battery terminal. Go to next step.
Start engine and allow to reach operating temperature. Note voltage reading on voltmeter. If voltage is more than 0.1 volt, repair generator ground circuit between battery and generator for high resistance If voltage is 0.1 volt or less, go to next step.
Maintain engine speed at 1600 RPM. Using scan tool, read target charging voltage and charging voltage. Compare readings. If difference between readings is more than one volt, repair or replace generator as necessary . If difference between readings is one volt or less, go to next step.
Allow engine to idle. Turn ignition off. Perform TEST CH-1A - CHARGING SYSTEM NO CODE TEST.

TEST CH-1A - CHARGING SYSTEM NO CODE TEST
NOTE:Perform DTC TEST , Ensure battery is fully charged before proceeding.

Inspect generator belt for proper tension and good condition. If generator belt is okay, go to next step. If generator belt tension is incorrect or belt is damaged, repair as necessary.
Start engine. Using scan tool, set engine speed at 2000 RPM for 30 seconds. Using scan tool, return engine speed to idle and read Diagnostic Trouble Codes (DTCs). If any DTCs pertaining to charging system exist, go to appropriate test. .
Turn ignition off. Turn ignition on with engine off. Using scan tool, actuate generator field. Using scan tool in voltmeter mode, backprobe Dark Green wire at 2-wire connector on rear of generator. Voltage should cycle from zero volts to battery voltage every 1.4 seconds.
While monitoring voltage display on scan tool, wiggle wiring from 2-pin connector on rear of generator to Powertrain Control Module (PCM). PCM is located between driver's side front fender and power distribution center, near battery.
If no interruption of normal voltage cycle exists when wiggling wiring, go to next step. If interruption of normal voltage cycle exists when wiggling wiring, repair wiring as necessary.

Using scan tool, read DTCs. If any DTCs exist pertaining to charging system, go to appropriate test.
Using external voltmeter, connect voltmeter positive lead on B+ (battery) terminal on rear of generator. Connect voltmeter negative lead to positive battery terminal.
Start engine and note voltage reading on voltmeter. If voltage is 0.4 volt or less, go to next step. If voltage is more than 0.4 volt, repair B+ circuit between battery and generator for high resistance.
Turn ignition off. Using external voltmeter, connect voltmeter positive lead on generator case. Connect voltmeter negative lead to negative battery terminal.
Start engine and note voltage reading on voltmeter. If voltage is 0.1 volt or less, go to next step. If voltage is more than 0.1 volt, repair generator ground circuit from generator case to negative battery terminal for high resistance.
Remove external voltmeter. Using scan tool, read and record battery voltage reading. Using external voltmeter, read and record battery voltage between positive and negative battery terminals.
Compare both voltage readings obtained in step 11). If difference between both voltage readings is less than one volt, test is complete. If difference between both voltage readings is one volt or more, go to next step.
Turn ignition off. Disconnect PCM connectors. Using external voltmeter, check voltage between ground and terminal No. 22 (Red/Black wire) at PCM Black connector. Compare voltage reading to voltage reading obtained using scan tool in step 11).
If voltage reading is not within one volt of voltage reading obtained using scan tool in step 11), replace PCM
If voltage reading is within one volt of voltage reading obtained using scan tool in step 11), repair high resistance on Red/White wire between PCM Black connector terminal No. 22 and battery.

What would burn an PCM is a short and or internal failure

1st try and check for codes
no scanner ! No problem try this to retrive codes

Ensure battery is fully charged.
Turn ignition on and note operation of MIL.
When ignition is first turned on, MIL should come on and remain on for 3 seconds to verify bulb and circuit operation, and then go off.
Turn ignition on-off-on-off-on within 5 seconds.

Record 2-digit DTCs displayed by MIL flashing on and off. (Flash----flash-flash is code 12 and so on )

i will look more into it for you

try this mean while and let me know if any changes
disconnect battery and unplug the PCM
wait a min and reconnect PCM and then battery start and check

OPERATION
The amount of amperage produced by the generator is controlled by Electronic Voltage Regulator (EVR) circuitry within the PCM. EVR circuitry is connected in series with the generator field driver terminal and ground. A Battery Temperature Sensor (BTS), located in battery tray, is used to sense battery temperature. Sensed battery temperature and data from monitored line voltage is used by PCM to adjust battery charging rate. This is accomplished by cycling the ground path to control the strength of generator rotor magnetic field. PCM then compensates and regulates generator amperage output accordingly.

80% of the test depend on a scan tool to communicate and energize the field
And other than using an Ohm meter to check for short and or poor connection
most of the test is invalid

Check email for wiring daigram

Sorry not seen this before
continue with the wiring looking for a short
and check coil
coil is a very common failure

Thank you