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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 58 (ENGINE CONTROLS DIAGNOSIS - (DTC P0446 TO DTC P2100))DTC TESTSDTC P0700: TRANSMISSION CONTROL MODULE (TCM) REQUESTED MIL ILLUMINATIONTEST DESCRIPTION
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Test Description

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Test Description
WARNING: This page is about a different car, the 2005 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

  1. 3:  If the TCM has DTCs set that are requesting MIL illumination, those DTCs must be diagnosed first.
DTC P0700: Transmission Control Module (TCM) Requested MIL Illumination

Step Action Values Yes No
Schematic References: Automatic Transmission Controls Schematics in Automatic Transmission
Connector End View Reference:  Engine Control Module (ECM) Connector End Views  or  Engine Controls Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2
  1. Observe the Freeze Frame/Failure Records data for this DTC.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running in the DTC or as close to the Freeze Frame/Failure Records data that you observed.
Does the DTC fail this ignition?		 - Go to Step 3  Go to Intermittent Conditions
3  Connect a scan tool.
Are there any transmission DTCs set?		 - Go to Step 5  Go to Step 4 
4 Was an engine control module (ECM) communication condition repaired? - Go to Step 7  Go to Step 6 
5 Diagnose and repair any transmission DTCs. Refer to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information.
Did you complete the action?		 - Go to Step 4  -
6 Replace the ECM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?		 - Go to Step 7  -
7
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running in the DTC as specified in the supporting text.
Does the DTC run and pass?		 - Go to Step 8  Go to Step 3 
8 Observe the stored information, Capture Info with a scan tool.
Does the scan tool display any DTCs that you have not diagnosed?		 - Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information System OK
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.