Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptors
B009D 01 : Pedestrian Impact Detection Safing Sensor Short to BatteryB009D 02 : Pedestrian Impact Detection Safing Sensor Short to Ground
B009D 08 : Pedestrian Impact Detection Safing Sensor Signal Invalid/Open Circuit
B009D 39 : Pedestrian Impact Detection Safing Sensor Internal Electronic Failure
B009D 3A : Pedestrian Impact Detection Safing Sensor Incorrect Component Installed
Diagnostic Fault Information
Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
|---|---|---|---|---|---|
Safing Sensor Low Reference Circuit | B009D 02 | B009D 08 | B009D 08 | B009D 01 | B009D 39 B009D 3A |
Safing Sensor Signal Circuit | B009D 02 | B009D 08 | B009D 08 | B009D 01 | B009D 39 B009D 3A |
Circuit/System Description
The pedestrian impact detection system (PIDS) senses and discriminates vehicle impacts and deploy the pedestrian hood hinge actuators in a timely manner to protect vulnerable pedestrians. The safing sensor provides vehicle acceleration information to the pedestrian impact detection system (PIDS) module. The PIDS module uses vehicle acceleration information from the safing sensor and force information from the discrimination sensor to determine those events when the deployment of the hood hinge actuator is expected. The PIDS module provides a two wire current loop interface to the safing sensor. The PIDS module also provides power and ground to the safing sensor over the same two wire discrete interface. The PIDS module monitors the safing sensor for any system malfunction and when a malfunction is detected, a DTC will be stored in non volatile memory.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
B009D 01
The safing sensor voltage is greater than 3.2 V and the safing sensor voltage is not supplied by the PIDS module.
B009D 02
The safing sensor voltage is less than 3.5 V and the safing sensor voltage is being supplied by the PIDS module.
B009D 08
The safing sensor high and/or low circuit is open. An open circuit indicates no new data received.
B009D 39
The safing sensor sends an error message or invalid data to the PIDS module.
B009D 3A
Invalid safing sensor ID data received by the PIDS module
Action Taken When the DTC Sets
| • | The PIDS module commands the DIC to display the message 'Service Pedestrian Protection System'. |
| • | The PIDs module stores DTC in memory. |
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists. |
| • | A history DTC will clear once 40 malfunction-free ignition cycles have occurred. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Object Detection Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the safing sensor and the harness connector at the PIDS module.
- Test for infinite resistance between the safing sensor signal circuit terminal 1 and ground.
- Ignition ON, test for less than 1 volt between the safing sensor signal circuit terminal 1 and ground.
- Ignition ON, test for less than 1 volt between the safing sensor low reference circuit terminal 2 and ground.
- Test for less than 1 ohm of resistance between the safing sensor low reference circuit terminal 2 and the PIDS module terminal 31.
- Test for less than 1 ohm of resistance between the safing sensor signal circuit terminal 1 and the PIDS module terminal 30.
- If all circuits test normal, replace the safing sensor.
- With a scan tool, clear DTCs.
- Verify DTC B009D is not set.
| ⇒ | If less than infinite resistance, test the circuit for a short to ground. |
| ⇒ | If greater than the specified range, test the circuit for a short to voltage. |
| ⇒ | If greater than the specified range, test the circuit for a short to voltage. |
| ⇒ | If greater than the specified value, test the circuit for an open/high resistance. If the circuit tests normal, replace the safing sensor. |
| ⇒ | If greater than the specified value, test the circuit for an open/high resistance. If the circuit tests normal, replace the safing sensor. |
| ⇒ | If DTC is set, replace the PIDS module. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for PIDS module replacement, setup, and programming |
