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Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different car >> Section 687 (Wiring Systems And Power Management - DTC B1370 To DTC B2535) >> DTC B1441 >> Test Description

Test Description

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 3:  This tests the OFF/RUN/CRANK circuit for a short circuit to B+ and ground. Because of the control over powermoding this step must be performed with the switch in the OFF position. Any shorts to ground during this step could be a short to a voltage circuit that is only powered in Run or Accessory. The loads on these circuits would indicate a short to ground, but the cause would have to be traced thorough the OFF/RUN/CRANK circuit and repaired.
  2. 4:  This tests the ignition switch contacts of the OFF/RUN/CRANK circuit for merit.
  3. 5:  This tests the OFF/RUN/CRANK, 5-volt and 12-volt circuits for an open.
DTC B1441

Step Action Values Yes No
Schematic Reference: Body Control System Schematics and Power Distribution Schematics
Connector End View Reference: Master Electrical Component List
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to DIAGNOSTIC STARTING POINT - VEHICLE
2
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Check for DTC B1441 in the body control module (BCM).
Does the scan tool display DTC B1441 as current?		 - Go to Step 3  Go to Diagnostic Aids
3 
  1. Disconnect the BCM harness connector that contains the OFF/RUN/CRANK circuit.
  2. Place the ignition switch in the OFF position and remove the key from the ignition.
  3. Test for a short to ground and a short to voltage in the OFF/RUN/CRANK circuit and the ignition switch 5-volt reference supply circuit at the BCM harness connector. Refer to Circuit Testing .
Did you find and correct the condition?		 B+ Go to Step 9  Go to Step 4 
4 
IMPORTANT: The engine may crank during this procedure.
  1. Place the key into the ignition switch without rotating the switch.
  2. Test for continuity between the OFF/RUN/CRANK terminal and the ignition switch 12-volt reference supply terminal on the BCM harness connector
  3. Turn the ignition switch to the RUN position.
  4. Test for continuity between the OFF/RUN/CRANK terminal and the ignition switch 5-volt reference supply terminal on the BCM harness connector. Refer to Circuit Testing .
  5. Turn the ignition switch to the CRANK position.
  6. Using a DMM measure the resistance between the OFF/RUN/CRANK terminal and the ignition switch 5-volt reference supply terminal on the BCM harness connector. The resistance should be between 1250-1350 ohms only while the switch is in the crank position.
Can you measure continuity and is the resistance within value in the CRANK position?		 - Go to Step 7  Go to Step 5 
5 
  • Test the OFF/RUN/CRANK, 12-volt reference and 5-volt reference circuits of the ignition switch harness connector and the BCM harness connector for an open condition.
  • Test the terminals at ignition switch harness connector for the proper tension
Did you find and correct the condition?		 - Go to Step 9  Go to Step 6 
6 Replace the ignition switch. Refer to Ignition and Start Switch Replacement .
Did you complete the replacement?		 - Go to Step 9  -
7 Test the OFF/RUN/CRANK, 12-volt reference and 5-volt reference terminals of the BCM harness connector for the proper terminal tension and intermittent and poor connections.
Did you find and correct the condition?		 - Go to Step 9  Go to Step 8 
8 Replace the BCM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?		 - Go to Step 9  -
9
  1. Reconnect all disconnected connectors.
  2. Install the scan tool.
  3. Turn ON the ignition, with the engine OFF.
  4. Use the scan tool in order to clear the DTCs.
  5. Operate the vehicle within the Conditions for Running the DTCs, as specified in the supporting text.
Does the DTC reset?		 - Go to Step 1  System OK
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