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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1475 (Engine Control System - Diagnosis - 4.8L, 5.3L, & 6.0L (DTC P0172 To DTC P0507)) >> Diagnostic Information & Procedures >> DTC P0507 (w/Electronic Throttle Control) >> Test Description

Test Description

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. 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. 2:  This test determines if the engine can achieve the commanded RPM.
DTC P0507 (w/Electronic Throttle Control)

Step Action Yes No
Schematic Reference:  Engine Controls Schematics 
Connector End View Reference:  Engine Controls Component Views  or  Powertrain Control Module (PCM) Connector End Views 
1 Did you perform the Diagnostic System Check-Engine Controls? Go to Step 2  Go to Diagnostic System Check - Engine Controls
2 
  1. Set the park brake, and block the drive wheels.
  2. Start the engine.
  3. Turn OFF all accessories.
  4. With the RPM control function of the scan tool, command the engine RPM to 1,500 RPM, to 500 RPM, and back to 1,500 RPM.
  5. Exit the RPM control function.
Did the engine speed stay within 200 RPM of the commanded RPM during the above test?		 Go to Step 3  Go to Step 4 
3
  1. Observe the Freeze Frame/Failure Records for this DTC.
  2. Turn OFF the ignition for 30 seconds.
  3. In order to operate the vehicle under the conditions which set the DTC, use the following information:
    • The data in the Freeze Frame/Failure Records
    • The parameters listed in the Conditions for Running in the DTC.
Does the DTC set?		 Go to Step 4  Go to Intermittent Conditions
4 Inspect for the following conditions:
  • Deposits in the throttle body
  • A faulty positive crankcase ventilation (PCV) valve

Did you complete the repair?		 Go to Step 5  -
5
  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 6 
6 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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