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Home >> Chevrolet >> 2005 >> Venture LT >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays, Gauges And Console >> Diagnostic Information And Procedures >> DTC B1440 >> Conditions for Clearing the DTC

Conditions for Clearing the DTC

The power moding malfunction must be corrected and then the code can be cleared by using the scan tool. The code also clears after 100 ignition cycles.

Normal Device Power Moding

Key Position ACC IGN 1 IGN 0 Engine Running Power Mode
OFF Inactive Inactive Inactive No OFF or RAP
ACC Active Inactive Inactive No ACC
UNLOCK Inactive Inactive Active No UNLOCK or RAP
CRANK Inactive Active Active No CRANK
RUN Active Active Active No RUN
RUN Active Active Active Yes RUN
Code Setting Criteria (Fault) for Device Power Moding

ACC IGN 1 IGN 0 Engine Running Power Mode (Default)
Inactive Active Inactive No OFF or RAP
Inactive Active Inactive Yes RUN
Active Active Inactive No RUN
Active Active Inactive Yes RUN
Inactive Active Active Yes RUN (Fault is set only if this condition exists for more than 1 minute)
Active Inactive Inactive Yes RUN
Active Inactive Active Yes RUN
DTC B1440

Step Action Yes No
Schematic Reference:  Instrument Cluster Schematics  
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. Install a scan tool.
  2. Turn the ignition ON, with the engine OFF.
  3. With a scan tool, observe the Ignition 1 and the Ignition 0 parameters in the IPC data list.
Does the scan tool display near Battery Voltage for both parameters?		 Go to Step 3  Go to Step 4 
3
  1. Turn the ignition switch to accessory.
  2. With a scan tool, observe the Ignition 1 parameter in the IPC data list.
Does the scan tool display Battery Voltage?		 Go to Step 5  Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
4 Test the inactive ignition voltage circuit for an open, a high resistance, or a short to ground. Refer to Circuit Testing andWiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 8  Go to Step 6 
5 Test the ignition 1 voltage circuit 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 8  Go to Step 6 
6 Inspect for poor connections at the harness connector of the instrument panel cluster (IPC). 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 8  Go to Step 7 
7 Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?		 Go to Step 8  -
8
  1. Use the scan tool in order to clear the DTCs.
  2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.
Does the DTC reset?		 Go to Step 2  System OK
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