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Test Description

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

  1. 2:  This step verifies that the shift lock control solenoid operates.
  2. 3:  This step tests for a good ground at the ground circuit of the automatic transmission shift lock control solenoid.
  3. 4:  This step verifies that the BCM is providing battery voltage to the automatic transmission shift lock control solenoid.
  4. 5:  This step tests if battery voltage is constantly being applied to the automatic transmission shift lock control solenoid.
DTC B2705

Step Action Yes No
Schematic Reference: Automatic Transmission Shift Lock Control Schematics 
Connector End View Reference: Automatic Transmission Shift Lock Control Connector End Views  or Keyless Entry Connector End Views in Keyless Entry
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 ON the ignition, with the engine OFF.
  3. With a scan tool, observe the shift lock solenoid command parameter while pressing and releasing the brake pedal.
Does the scan tool display Unlock when the brake pedal is pressed and Lock when the brake pedal is released?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 
  1. Turn OFF the ignition.
  2. Disconnect the automatic transmission shift lock control solenoid.
  3. Connect a test lamp between the shift lock control solenoid ground circuit at the connector of the shift lock control solenoid and battery positive voltage.
Does the test lamp illuminate?		 Go to Step 4  Go to Step 10 
4 
  1. Turn OFF the ignition.
  2. Connect a test lamp between the shift lock solenoid control circuit and the shift lock solenoid ground circuit at the connector of the shift lock control solenoid.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the shift lock solenoid command parameter while pressing and releasing the brake pedal.
Does the test lamp turn ON and OFF?		 Go to Step 8  Go to Step 5 
5  Does the test lamp remain illuminated? Go to Step 6  Go to Step 7 
6 Test the control circuit of the automatic transmission shift lock control solenoid for a short to battery voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 13  Go to Step 9 
7 Test the control circuit of the automatic transmission shift lock control solenoid for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 13  Go to Step 9 
8 Inspect for poor connections at the harness connector of the automatic transmission shift lock control solenoid. 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 13  Go to Step 11 
9 Inspect for poor connections at the harness connector of the body control module (BCM). 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 13  Go to Step 12 
10 Repair the open in the automatic transmission shift lock control ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you complete the repair?		 Go to Step 13  -
11 Replace the automatic transmission shift lock control solenoid. Refer Automatic Transmission Shift Lock Actuator Replacement .
Did you complete the replacement?		 Go to Step 13  -
12
IMPORTANT: Perform the set up procedure for the BCM.
Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.Did you complete the replacement?		 Go to Step 13  -
13
  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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