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Test Description

WARNING: This page is about a different car, the 2007 Cadillac DTS. 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. 2:  Listen for an audible click when the shift lock solenoid operates. Command both the Active and Inactive states. Repeat the commands as necessary.
  2. 3:  This step tests for battery voltage at the control circuit of the shift lock solenoid.
  3. 4:  This step tests for an open or short to ground at the control circuit of the shift lock solenoid.
  4. 5:  This step tests for an open at the ground circuit of the shift lock solenoid.
DTC B2705

Step Action Yes No
Schematic Reference: Shift Lock Control Schematics 
Connector End View Reference: Shift Lock Control Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2 
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. With a scan tool, command the shift lock solenoid output control ON and OFF.
  4. With a scan tool, observe the shift lock solenoid command parameter in the body control module (BCM) data list.
Does the shift lock solenoid command display ON and OFF with each command?		 Go to Testing for Intermittent Conditions and Poor Connections Go to Step 3 
3 
  1. Turn OFF the ignition.
  2. Disconnect the shift lock solenoid.
  3. Connect a test lamp between the shift lock solenoid control circuit at the connector of the shift lock solenoid and a good ground.
  4. Turn ON the ignition, with the engine OFF.
  5. With a scan tool, command the shift lock solenoid output control ON and OFF several times.
Does the test lamp illuminate ON and OFF with each command?		 Go to Step 5  Go to Step 4 
4  Test the control circuit of the shift lock solenoid for an open or short to ground. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 Go to Step 10  Go to Step 7 
5  Test the shift lock solenoid ground circuit for an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 Go to Step 10  Go to Step 6 
6 Inspect for poor connections at the harness connector of the shift lock solenoid. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 10  Go to Step 8 
7 Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 Go to Step 10  Go to Step 9 
8 Replace the shift lock solenoid. Refer to Automatic Transmission Shift Lock Actuator Replacement  for column shift or Shift Control Replacement for console shift.
Did you complete the replacement?		 Go to Step 10  -
9
IMPORTANT: Perform the set up procedures for the BCM.
Replace the BCM. Refer to Control Module References for replacement, setup, and programming.Did you complete the replacement?		 Go to Step 10  -
10
  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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