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Home >> Chevrolet >> 2005 >> Venture LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 3.4L DTC P0140 To P0443 >> DTC Tests >> DTC P0385 >> Conditions for Clearing the MIL/DTC

Conditions for Clearing the MIL/DTC

DTC P0385

Step
 
Action 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. Turn OFF the ignition.
  2. Disconnect the crankshaft position (CKP) sensor A.
  3. Observe the 3X Crank Sensor parameter with the scan tool.
  4. Crank the engine.
Does the scan tool display 3X Crank Sensor RPM?
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. 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 4  Go to Intermittent Conditions
4
  1. Turn OFF the ignition.
  2. Disconnect the 6-way connector at the ignition control module (ICM).
  3. Turn ON the ignition, with the engine OFF.
  4. Connect a test lamp to a good ground.
  5. Probe the low resolution engine speed signal 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 8  Go to Step 5 
5
  1. Connect the test lamp to battery voltage.
  2. Probe the low resolution engine speed signal circuit, at the ICM 6-way connector, with the test lamp.
Does the test lamp illuminate?
Go to Step 7  Go to Step 6 
6
  1. Observe the 3X Crank Sensor parameter with the scan tool.
  2. Probe the low resolution engine speed signal circuit repeatedly, at the ICM 6-way connector, with the test lamp.
Does the 3X Crank Sensor RPM change?
Go to Step 10  Go to Step 9 
7 Test the low resolution engine speed signal circuit between the ICM and the powertrain control module (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 14  Go to Step 13 
8 Test the low resolution engine speed signal circuit between the ICM and the PCM for a short to voltage. Refer to Circuit Testing andWiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 14  Go to Step 13 
9 Test the low resolution engine speed signal circuit between the ICM and the PCM for an open. Refer to Circuit Testing andWiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 14  Go to Step 11 
10 Test for an intermittent and poor connection at the ICM. Refer to Testing for Intermittent Conditions and Poor Connections andConnector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 14  Go to Step 12 
11 Test for an intermittent and poor connection at the PCM. Refer to Testing for Intermittent Conditions and Poor Connections andConnector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 14  Go to Step 13 
12 Replace the ICM. Refer to Ignition Control Module Replacement .
Did you complete the replacement?
Go to Step 14  -
13 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 14  -
14
  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 15 
15 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