There are several reasons for disabling the pedestrian impact detection system (PIDS), such as repairs to the system or servicing a component near or attached to a PIDS component. There are several ways to disable the PIDS depending on what type of service is being performed. The following information covers the proper procedures for disabling/enabling the pedestrian impact detection system (PIDS).
Condition | Action |
|---|---|
If the vehicle was involved in an accident with a hinge deployment. | Disconnect the negative battery cable(s). Refer to Repairs and Inspections Required After a Collision. |
When performing PIDS diagnostics. | Follow the appropriate PIDS service manual diagnostic procedure(s) |
When removing or replacing a PIDS component or a component attached to a PIDS component. | Disconnect the negative battery cable(s) |
If the vehicle is suspected of having shorted electrical wires. | Disconnect the negative battery cable(s) |
When performing electrical diagnosis on components other than the PIDS. | Remove the PIDS fuse(s) when indicated by the diagnostic procedure to disable the SIR system |
Pedestrian Impact Detection System (PIDS) Service Precautions
Caution: When performing service on or near the pedestrian impact detection system (PIDS) components or the PIDS wiring, the PIDS must be disabled. Failure to observe the correct procedure could causedeployment of the PIDS components. Serious injury can occur. Failure to observe the correct procedure could also result in unnecessary PIDS repairs
The pedestrian impact detection system (PIDS) maintains a reserve energy supply. The PIDS reserve energy supply provides deployment power for the hood hinge actuators if the PIDS loses battery power during a collision. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Waiting 1 minute before working on the system after disabling the SIR system prevents deployment of the air bags from the reserved energy supply.
General Service Instructions
The following are general service instructions which must be followed in order to properly repair the vehicle and return it to its original integrity:
| • | Do not expose the PIDS modules to temperatures above 65°C (150°F). |
| • | Verify the correct replacement part number. Do not substitute a component from a different vehicle. |
| • | Use only original GM replacement parts available from your authorized GM dealer. Do not use salvaged parts for repairs to the PIDS. |
Discard any of the following components if it has been dropped from a height of 100 cm (3 feet) or greater:
| • | Pedestrian impact detection system module |
| • | Pedestrian impact detection system safing sensor |
| • | Pedestrian impact detection system discrimination sensor |
| • | Pedestrian impact detection system hood hinge actuators |
Disabling Procedure - Pedestrian Impact Detection System (PIDS) Fuse
- Place the ignition in the OFF position.
- Locate and remove the fuse supplying power to the PIDS. Refer to Object Detection Schematics or Electrical Center Identification Views.
- Wait 1 minute before working on the system.
Important: To ensure there is no unwanted PIDS deployment, personal injury or unnecessary PIDS repairs, remove all fuses supplying power to the PIDS. With all PIDS fuses removed and the ignition switch in the ON position, the PIDS warning indicator illuminates. This is normal operation, and does not indicate a PIDS system malfunction.
Enabling Procedure - Pedestrian Impact Detection System (PIDS) Fuse
- Place the ignition in the OFF position.
- Install the fuse supplying power to the PIDS. Refer to Object Detection Schematics or Electrical Center Identification Views.
- Turn the ignition switch to the ON position. The PIDS indicator will flash then turn OFF.
- Perform the Diagnostic System Check - Vehicle if the PIDS warning indicator does not operate as described. Refer to Diagnostic System Check - Vehicle.
Disabling Procedure - Negative Battery Cable
- Place the ignition in the OFF position.
- Disconnect the negative battery cable from the battery. Refer to Battery Negative Cable Disconnection and Connection.
- Wait 1 minute before working on system.
Enabling Procedure - Negative Battery Cable
- Place the ignition in the OFF position.
- Connect the negative battery cable to the battery. Refer to Battery Negative Cable Disconnection and Connection.
- Turn the ignition switch to the ON position. The PIDS indicator will flash then turn OFF.
- Perform the Diagnostic System Check - Vehicle if the PIDS warning indicator does not operate as described. Refer to Diagnostic System Check - Vehicle.
