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Home >> Chevrolet >> 2005 >> Aveo Base, 4D Hatchback >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - 1.6L (L91) - DTC P0456 To DTC P2196 >> Diagnosis >> DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610 >> Test Description

Test Description

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

  1. 2:  A DTC P0602 indicates the ECM is not programmed.
  2. 4:  Attempt to program the ECM. If the ECM fails to program a second time, replace the ECM.
DTC P0601, P0602, P0606, or P2610

Step Action Yes No
1 Did you perform the Diagnostic System Check - Engine Controls? Go to Step 2  Go to Diagnostic System Check - Engine Controls
2  Is DTC P0602 set? Go to Step 3  Go to Step 5 
3 Program the engine control module (ECM).
Does DTC P0602 reset?		 Go to Step 4  Go to Step 8 
4 
  1. Ensure that all tool connections are secure.
  2. Ensure the programming equipment is operating correctly.
  3. Ensure the correct software and the correct calibration is used.
  4. Attempt to program the ECM.
Does DTC P0602 reset?		 Go to Step 7  Go to Step 8 
5
IMPORTANT:
  • A low battery condition may cause this DTC to set.
  • An intermittent condition at the ignition switch may cause this DTC to set.
Is DTC P2610 set?		 Go to Step 6  Go to Step 7 
6 Test the engine control module (ECM) ignition 1 and battery positive voltage circuits for the following conditions:
  • Open fuses
  • Open circuits
  • Grounded circuits
  • High resistance

Did you find and correct the condition?		 Go to Step 8  Go to Step 7 
7 Replace the ECM. Refer to Engine Control Module (ECM) Replacement .
Did you complete the replacement?		 Go to Step 8  -
8
  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 the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 Go to Step 2  Go to Step 9 
9 Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?		 Go to Diagnostic Trouble Code (DTC) List System OK
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