• Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
• Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
• An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

For an overview of the component/system, refer to:Automatic Transmission Shift Lock Control Description and Operation

• Ignition » On / Vehicle » In Service Mode
• Brake Pedal Applied
• Transmission in Park

Frequency the DTC runs=Continuously—After the running conditions are met

M7 Transmission Shift Lock Control Solenoid ActuatorControl Circuit=Short to Ground—For greater than 60 s

S3 Transmission Shift Lever=Locked

• A current DTC will clear on the next malfunction-free ignition cycle.
• A history DTC will clear after 100 consecutive malfunction-free ignition cycles.

• Body Control System Schematics
• Shift Lock Control Schematics

Master Electrical Component List

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Control Module References

1. Ignition » On / Vehicle » In Service Mode
2. Verify the scan tool parameter:Brake Pedal Applied=Inactive
• If not the specified state
• Refer to:Stop Lamps Malfunction
• If the specified state
3. Operate the component:Brake Pedal»Pressed

   Operate the component:S3 Transmission Shift Lever»Park&Drive

• If not the specified state

  Refer to: Circuit/System Testing

• If the specified state
4. All OK.

1. Ignition » On / Vehicle » In Service Mode
2. Disconnect the electrical connector:X1K9 Body Control Module
3. Verify a test lamp turns On between the test points:B+ circuit terminal 4&Ground
• If the test lamp does not turn On
1. Ignition/Vehicle » Off & Remove » Test lamp
2. Disconnect the electrical connector:T19 Power Supply Transformer
3. Test for less than 2 Ω between the test points:B+ circuit terminal 4&Circuit terminal 9@T19 Power Supply Transformer
• If 2 Ω or greater » Repair the open/high resistance in the circuit.
• If less than 2 Ω » Replace the component:T19 Power Supply Transformer
• If the test lamp turns On

Note: It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.

4. Ignition/Vehicle & All vehicle systems » Off
5. Disconnect the electrical connector:S3 Transmission Shift Lever
6. Test for less than 10 Ω between the test points:Ground circuit terminal 2&Ground
• If 10 Ω or greater
1. Disconnect ground terminal.
2. Test for less than 2 Ω between the test points:Ground circuit terminal 2&Ground
• If 2 Ω or greater » Repair the open/high resistance in the circuit.
• If less than 2 Ω » Repair the open/high resistance in the ground connection.
• If less than 10 Ω
7. Connect a test lamp between the test points:Control circuit terminal 4&Ground circuit terminal 2
8. Ignition » On / Vehicle » In Service Mode
9. Perform the scan tool control function:Brake Transmission Shift Interlock Solenoid Actuator

   Verify the test lamp turns On and Off.

• If the test lamp is always Off
1. Ignition/Vehicle » Off & Remove » Test lamp
2. Disconnect the electrical connector:K9 Body Control Module
3. Test for infinite resistance between the test points:Control circuit terminal 4@Component harness&Ground
• If less than infinite resistance » Repair the short to ground on the circuit.
• If infinite resistance
4. Test for less than 2 Ω between the test points:Control circuit terminal 4@Component harness&Terminal 6 X7@Control module harness
• If 2 Ω or greater » Repair the open/high resistance in the circuit.
• If less than 2 ΩReplace the component:K9 Body Control Module
• If the test lamp is always On
1. Ignition/Vehicle » Off & Remove » Test lamp
2. Disconnect the electrical connector:K9 Body Control Module
3. Ignition » On / Vehicle » In Service Mode
4. Test for less than 1 V between the test points:Control circuit terminal 4@Component harness&Ground
• If 1 V or greater » Repair the short to voltage on the circuit.
• If less than 1 V » Replace the component:K9 Body Control Module
• If the test lamp turns On and Off
5. Test or replace the component:S3 Transmission Shift Lever

1. Ignition/Vehicle » Off
2. Disconnect the electrical connector:S3 Transmission Shift Lever
3. Connect a 3 A fused jumper wire between the test points:Control terminal 4&12 V
4. Momentarily connect a jumper wire between the test points:Ground terminal 2&Ground

   Verify the component produces a clicking sound:M7 Transmission Shift Lock Control Solenoid Actuator

• If the component does not produce a sound

  Replace the component:S3 Transmission Shift Lever

• If the component produces a sound
5. All OK.

Perform the Diagnostic Repair Verification after completing the repair:Diagnostic Repair Verification

• Transmission Control Replacement
• Multifunction Power Supply Converter Replacement
• For control module replacement, programming, and setup refer to:Control Module References