Thread: P0650 code

Alright I put in an overkill pcm from will about a month ago and just the other day I got a p0650 code, malfunction indicator lamp (MIL) http://www.gmforum.com/obd-ii-troubl.../..there's a link to what it is.. I checked with my aeroforce n seen p0650 and cleared it. Now I'm only getting it thru the dic, the "service vehicle soon" but it's ses light in the gauge cluster isn't coming on, nor is it popping up on my aeroforce anymore or has been since I cleared it..but since that was the last thing that popped up, idk if it is still that or something else. It seems like that's what this code does, is doesnt light the check engine light up or am I mistaken? Also when I put my key in and just turn the radio on, without starting the car, the check engine light will display.. So I checked my negative grounds and the pcm connections n everything seemed good. Idk what else to do, any help is appreciated, thank you!

looks like you need to check the pcm connection first. P0650 Description Malfunction Indicator Lamp (MIL) Control Circuit Output drive moduels (ODM’s) are used by the powertrain control module (PCM) to turn on many of the current-driven devices that are needed to control various engine and transaxle functions. Each ODM is capable of controlling up to 7 separate outputs by applying ground to the device whish the PCM is commanding ON. Unlike quad diver modules (QDM’s) used in prior model years, ODM’s have the capability of diagnosing each output circuit individually. DTC P0650 set indicates an improper voltage level on the output circuit that control the MIL. Symptoms The PCM will illuminate the malfunction indicator lamp (MIL) during the second consecutive trip in which the diagnostic test has been run and failed. The PCM will store the conditions, which were present when the DTC set as Freeze Frame and Failure Records Data only. If the misfire is determined to be catalyst damaging, the PCM will flash the MIL. Causes An improper voltage level has been detected on ODM D output 1 (the MIL control circuit) The above conditions are present for at least 30 seconds. Solutions Check for the following conditions: A faulty connection at the PCM – inspect the harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and faulty terminal to wire connections. Inspect the wiring harness for damage. If the harness appears to be okay, disconnect the PCM, turn the ignition ON and observe a DMM connected between the MIL control circuit and ground at the PCM harness connector while moving connectors and wiring harnesses related to the MIL. A change in voltage will indicate the location of the fault. Located the MIL fuse. If the fuse is open, locate and repair a short to ground in the MIL ignition supply circuit or a shorted cluster. Inspect the MIL fuse and replace as necessary. Did you find and replace the blown fuse and make repairs? Yes – Clear the DTC. NO – Turn the ignition OFF and disconnect the PCM. If the jumper fuse opens, locate and repair a short to voltage in the MIL control circuit or a shorted cluster. Install a 3amp fused jumper between the MIL control circuit at the PCM harness connector and a good ground. Turn the ignition ON with the engine off. Is the MIL illuminated? YES – Leave the ignition on and remove the jumper. Is the MIL still illuminated? YES – Remove the instrument cluster. Test the MIL control circuit for a short to ground and repair as necessary. Did you fin and repair the condition? YES – Clear the DTC NO – Inspect the PCM and PCM harness connector for faulty connections and repair as necessary. Did you find and correct the connection? YES – Clear DTC NO – Replace the PCM NO – Remove the instrument cluster. Test the MIL control circuit for a short to ground and repair as necessary. Did you fin and repair the condition? YES – Clear the DTC NO – Test the MIL ignition supply circuit for an open and repair as necessary. Did you find a problem and correct? YES – Clear the DTC NO – Inspect the cluster harness connector for faulty connections and repair as necessary. Did you find and repair the condition? YES – Clear the DTC NO – Repair or replace the cluster. Did you complete the repair or replacement? YES – Clear the DTC

Alright ill just disconnect it n try that out..