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Home >> Chevrolet >> 2005 >> Venture Base, Van Cargo Extended >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 3.4L DTC P0140 To P0443 >> DTC Tests >> DTC P0350 >> Conditions for Clearing the MIL/DTC

Conditions for Clearing the MIL/DTC

DTC P0350

Step
 
Action Values Yes No
Schematic Reference:  Engine Controls Schematics 
Connector End View Reference: Engine Controls Connector End Views or Powertrain Control Module (PCM) 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 for this DTC.
  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 3  Go to Intermittent Conditions
3
  1. Turn OFF the ignition.
  2. Disconnect the 6-way ignition control module (ICM) connector.
  3. Jumper all of the circuits from the ICM 6-way connector to the ICM except the ignition control (IC) timing control circuit. Refer to Using Connector Test Adapters in Wiring Systems.
  4. Start the engine.
  5. Measure the frequency from the IC timing control circuit, at the ICM 6-way connector, to a good ground with a DMM. Refer to Circuit Testing in Wiring Systems.
  6. IMPORTANT: Allow the engine speed to stabilize after each command.
  7. Command the engine speed to 800 RPM with the scan tool.
  8. Command the engine speed to 1,000 RPM with the scan tool.
Is the frequency within the specified range for each command?
38-42 @ 800 RPM
48-52 @ 1000 RPM
Go to Step 4  Go to Step 5 
4 Observe the DTC Info with the scan tool.
Is DTC P1350 also set?
- Go to Step 8  Go to Step 11 
5
  1. Turn OFF the ignition.
  2. Remove the jumper wires.
  3. Connect a test lamp to battery voltage.
  4. Turn ON the ignition, with the engine OFF.
  5. Probe the IC timing control circuit, at the ICM 6-way connector, with the test lamp. Refer to Probing Electrical Connectors in Wiring Systems.
Does the test lamp illuminate?
- Go to Step 9  Go to Step 6 
6
  1. Connect the test lamp to a good ground.
  2. Probe the IC timing control circuit, at the ICM 6-way connector, with the test lamp.
Does the test lamp illuminate?
- Go to Step 7  Go to Step 10 
7 Test the IC timing control circuit between the ICM and the powertrain control module (PCM) for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 15  Go to Step 14 
8 Test the IC timing signal circuit between the ICM and the PCM for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 15  Go to Step 14 
9 Test the IC timing control circuit between the ICM and the PCM for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 15  Go to Step 14 
10 Test the IC timing control circuit between the ICM and the PCM for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 15  Go to Step 12 
11 Test for an intermittent and poor connections at the ICM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 15  Go to Step 13 
12 Test for an intermittent and poor connection at the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
- Go to Step 15  Go to Step 14 
13 Replace the ICM. Refer to Ignition Control Module Replacement .
Did you complete the replacement?
- Go to Step 15  -
14 Replace the PCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?
- Go to Step 15  -
15
  1. Clear the DTCs with a scan tool.
  2. Turn OFF 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 16 
16 Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?
- Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information System OK