Location of Engine Control Module

P1296 CHRYSLER - 5 Volt Reference Voltage Missing At Throttle Position Sensor
https://www.autocodes.com/p1296_chrysler.html

code 01314 refers to engine control module (ECM) cruise control system---defective===causes--- ECM
replace the ECM with a known operational unit that is correct for your vehicle

ECM- Engine control module. It is under the hood, by the engine. Drivers side. How do you know to replace it? they have to be programmed when replaced. New or used. Dealer only reprogramming.

Yes if the ECM is defective the car wont start, the ECM controls the fuel injection, spark etc

PCM Powertrain Control Module. interchange the knock module inside the pcm. after you will have reprogram.
location under hood near fuse relay center

One relay carrier is placed inside car - the fuse box & relay plate - fascia 2.



The electronic box - Engine Control Module (ECM) is placed under hood in the left corner of engine bay near windscreen. There are also some main relays.

ECM (Engine Control Module) is the old name to the new PCM
(Powertrain Control Module) denomination; this unit performs many functions on your car. The module accepts information from various engine sensors and computes the required fuel flow rate necessary to maintain the correct amount of air/fuel ratio throughout the entire engine operational range.

Based on the information that is received and programmed into the PCM's memory, the PCM generates output signals to control relays, actuators and solenoids.

The module is mounted under the hood on the firewall. On 493-94 models, it is mounted low on the firewall, near the left-hand fender (drivers side). On 495-99 models, it is mounted high on the firewall offset to the right-hand side of center.



Exploded view of the firewall PCM mounting for 493-94 models




Exploded view of the firewall PCM mounting for 495-99 models

1. Disconnect the negative battery cable.
2. Disengage the wiring harness connector from the PCM by loosening the connector retaining bolt, then pulling the connector from the module.
3. Remove the two nuts and the PCM cover.
4. Remove the PCM from the bracket by pulling the unit outward.
   

To install:

1. Install the PCM in the mounting bracket.
2. Install the PCM cover and tighten the two nuts.
3. Attach the wiring harness connector to the module, then tighten the connector retaining bolt.
4. Connect the negative battery cable.

Hope helps (remember comment and rated this).

There is 1 ecm(electronic control module), 1 tcm(transmission control module), and a few other control units. The ecm is in the engine bay.

There is a Technical Service Bulletin (NTB04-037a) for this code to check the Engine Control Module (ECM) part number and if the ECM part number is listed in the TSB, it requres the dealer to reprogram the ECM. If the ECM part # is not listed, the TSB does not apply and then the problem is likely a defective Air/Fuel (A/F) Sensor.