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For 1990-2009 cars only

Object Number: 515397  Size: SF
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Circuit Description

Output driver modules (ODMs) are used by the 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 which the PCM is commanding ON. Unlike the quad driver modules (QDMs) used in prior model years, ODMs have the capability of diagnosing each output circuit individually. If an improper voltage level is detected on the output circuit that controls the malfunction indicator lamp (MIL) DTC P0650 will set.

Conditions for Setting the DTC

    • Ignition is ON.
    • An improper voltage level has been detected on ODM D output 1 (the MIL control circuit).
    • Above conditions are present for at least 30 seconds.

Action Taken When the DTC Sets

    • The PCM will illuminate the malfunction indicator lamp (MIL) during the first trip in which the diagnostic test has been run and failed.
    • The PCM will store conditions which were present when the DTC set as Freeze Frame and Failure Records data.

Conditions for Clearing the MIL/DTC

    • The PCM will turn OFF the malfunction indicator lamp (MIL) during the third consecutive trip in which the diagnostic has run and passed.
    • The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
    • The DTC can be cleared by using a scan tool.

Diagnostic Aids

Check for the following conditions:

    • Poor connection at the PCM -- Inspect harness connectors for the following conditions:
       - Backed out terminals
       -  Improper mating, broken locks
       - Improperly formed or damaged terminals
       -  Poor terminal to wire connection
    • Damaged harness -- Inspect the wiring harness for damage. If the harness appears to be OK, disconnect the PCM, turn ON the ignition and observe a Digital Multimeter 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 malfunction.

If the DTC cannot be duplicated and is determined to be intermittent, reviewing the Failure Records can be useful in determining when the DTC was last set. Also refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. This vehicle is equipped with a PCM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). When the PCM is replaced, the new PCM must be programmed.

DTC P0650 - MIL Control Circuit

Step

Action

Values

Yes

No

1

Did you perform the Powertrain On-Board Diagnostic (OBD) System Check?

--

Go to Step 2

Go to Powertrain On Board Diagnostic (OBD) System Check

2

Important: If the MIL 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.

Was the fuse open?

--

Go to Step 12

Go to Step 3

3

  1. Turn the ignition OFF.
  2. Disconnect the PCM. Refer to Powertrain Control Module Replacement/Programming .
  3. Important: If the jumper fuse opens, locate and repair a short to voltage in the MIL control circuit or a shorted cluster.

  4. Install a 3 amp fused jumper between the MIL control circuit at the PCM harness connector and a good ground.
  5. Turn the ignition ON, with the engine OFF.

Is the MIL illuminated?

--

Go to Step 4

Go to Step 5

4

Leaving the ignition ON, remove the jumper.

Is the MIL illuminated?

--

Go to Step 7

Go to Step 9

5

  1. Remove the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.
  2. Test the MIL control circuit for an open and repair as necessary.

Did you find and correct the condition?

--

Go to Step 12

Go to Step 6

6

Test the MIL ignition supply circuit for an open and repair as necessary.

Did you find and correct the condition?

--

Go to Step 12

Go to Step 8

7

  1. Remove the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.
  2. Test the MIL control circuit for a short to ground and repair as necessary.

Did you find and repair the condition?

--

Go to Step 12

Go to Step 10

8

Inspect the cluster harness connector for faulty connections and repair as necessary. Refer to Wiring Repairs in Wiring Systems.

Did you find and repair the condition?

--

Go to Step 12

Go to Step 10

9

Inspect the PCM and the PCM harness connector for faulty connections and repair as necessary. Refer to Wiring Repairs in Wiring Systems.

Did you find and correct the connection?

--

Go to Step 12

Go to Step 11

10

Repair or replace the cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.

Did you complete the repair or replacement?

--

Go to Step 12

--

11

Important:: The replacement PCM must be programmed.

Replace the PCM. Refer to Powertrain Control Module Replacement/Programming .

Did you complete the replacement?

--

Go to Step 12

--

12

  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the parameters described in Conditions for Running and Conditions for Setting on the facing page.

Does the DTC reset?

--

Go to Step 2

System OK