B22A8

B22A8-00-ELECTRONIC PEDESTRIAN PROTECTION MODULE FIRING STORED ENERGY

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation
When powered, The Electronic Pedestrian Protection Module (EPPM) performs a self test of the capacitors used to initiate the squib deployment circuits in the event of collision detection. The repair of this fault condition does not involve any external circuitry and centers on verifying the integrity of these capacitors.
- When Monitored:
The EPPM checks the status and capacitance of the stored energy reserve at power up during the initialization process, and continuously through the ignition cycle.

- Set Condition:
This DTC will set if the EPPM detects a malfunction with the capacitors or internal circuitry used to initiate the squib deployment circuits. Once set, this DTC is latched for the entire ignition cycle. If two consecutive internal faults related to the roll over sensor are detected in one ignition cycle, the DTC is set as active indefinitely.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. . EPPM System Pre-Diagnostic Procedure
REPLACE ELECTRONIC PEDESTRIAN PROTECTION MODULE (EPPM)
1. Turn the ignition on.
2. With the scan tool, erase and read EPPM DTCs.

WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

WARNING: If the Electronic Pedestrian Protection Module (EPPM) is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental actuator deployment. Failure to follow these instructions may result in possible serious or fatal injury.

When this code is set, view repair.

Repair

- Replace the Electronic Pedestrian Protection Module (EPPM). Electronic Pedestrian Protection Module - Removal.
- Perform the EPPM SYSTEM VERIFICATION TEST. . EPPM System Verification Test