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
B009C 01 : Pedestrian Impact Detection Discrimination Sensor Short to BatteryB009C 02 : Pedestrian Impact Detection Discrimination Sensor Short to Ground
B009C 08 : Pedestrian Impact Detection Discrimination Sensor Signal Invalid/Open Circuit
B009C 39 : Pedestrian Impact Detection Discrimination Sensor Internal Electronic Failure
B009C 3A : Pedestrian Impact Detection Discrimination Sensor Incorrect Component Installed
Diagnostic Fault Information
Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
|---|---|---|---|---|---|
Discrimination Sensor Supply Voltage Circuit | B009C 02 | B009C 08 | B009C 08 | -- | B009C 39 B009C 3A |
Discrimination Sensor Ground Circuit | -- | B009C 08 | B009C 08 | B009C 01 | B009C 39 B009C 3A |
Discrimination Sensor Low Reference Circuit | B009C 02 | B009C 08 | B009C 08 | B009C 01 | B009C 39 B009C 3A |
Discrimination Sensor Signal Circuit | B009C 02 | B009C 08 | B009C 08 | B009C 01 | B009C 39 B009C 3A |
Circuit/System Description
The pedestrian impact detection system (PIDS) senses and discriminates vehicle impacts and deploys the pedestrian hood hinge actuators in a timely manner to protect vulnerable pedestrians. The discrimination sensor provides discrete force 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 discrimination sensor. The PIDS module also provides power and ground to the discrimination sensor over two separate discrete circuits. The PIDS module monitors the discrimination 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
B009C 01
The discrimination sensor voltage is greater than 3.2 V and the discrimination sensor voltage is not supplied by the PIDS module.
B009C 02
The discrimination sensor voltage is less than 3.5 V and the discrimination sensor voltage is supplied by the PIDS module.
B009C 08
The discrimination sensor high and/or low circuit is open or no new data received. An open circuit indicates as no new data received.
B009C 39
The discrimination sensor sends an error message or invalid data to the PIDS module.
B009C 3A
Invalid discrimination 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' in the DIC. |
| • | 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 discrimination sensor.
- Ignition OFF, test for less than 5 ohms of resistance between the discrimination sensor ground circuit terminal 3 and ground.
- Ignition ON, verify a test lamp illuminates between the discrimination sensor supply voltage circuit terminal 4 and ground.
- Ignition OFF, disconnect the harness connector at the PIDS module.
- Test for infinite resistance between the discrmination sensor signal circuit terminal 2 and ground.
- Ignition ON, test for less than 1 volt between the discrimination sensor signal circuit terminal 2 and ground.
- Ignition ON, test for less than 1 volt between the discrimination sensor low reference circuit terminal 1 and ground.
- Test for less than 1 ohm of resistance between the discrimination sensor low reference circuit terminal 1 and the PIDS module terminal 40.
- Test for less than 1 ohm of resistance between the discrmination sensor signal circuit terminal 2 and the PIDS module terminal 39.
- If all circuits test normal, replace the discrmination sensor.
- With a scan tool, clear DTCs.
- Verify DTC B009C is not set.
| ⇒ | If greater than the specified value, test the circuit for a short to voltage and an open/high resistance. If the circuit tests normal, replace the PIDS module. |
| ⇒ | If the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the PIDS module. |
| ⇒ | If less than infinite resistance, test the circuit for a short to ground. |
| ⇒ | If greater than the specified value, test the circuit for a short to voltage. |
| ⇒ | If greater than the specified value, 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 discrimination 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 |
