B008B
DTC B008A or B008B
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.
DTC Descriptors
DTC B008A 00
- High Voltage Crash Impact Detection Sensor 2 No Additional Information
DTC B008A 11
- High Voltage Crash Impact Detection Sensor 2 Above Maximum Threshold
DTC B008A 12
- High Voltage Crash Impact Detection Sensor 2 Below Minimum Threshold
DTC B008A 39
- High Voltage Crash Impact Detection Sensor 2 Internal Electronic Failure
DTC B008A 3A
- High Voltage Crash Impact Detection Sensor 2 Incorrect Component Installed
DTC B008A 73
- High Voltage Crash Impact Detection Sensor 2 Parity Error
DTC B008B 00
- High Voltage Crash Impact Detection Sensor 3 No Additional Information
Diagnostic Fault Information
Circuit/System Description
The high voltage crash impact detector (HVCID) utilizes a unidirectional 2-wire circuit. The HVCID modulates current on the interface to send ID, state of health, and deployment commands to the serial data gateway module (SDGM). The SDGM serves as a power source and a ground for the HVCID. When the ignition is turned ON and input power from the SDGM is first detected, the HVCID responds by performing internal diagnostics and sending an ID to the SDGM. The HVCID continually communicates status messages to the SDGM, which determines if a fault is present in the HVCID circuit.
Conditions for Running the DTC
* The ignition is ON.
* The battery voltage is 7.5-18 V.
Conditions for Setting the DTC
B008A 00 or B008B 00
Sensor 2 or 3 is reporting a state-of-health message, but the SDGM is not calibrated to use sensor 2 or 3.
B008A 11
The HVCID sensor 2 or 3 signal circuit is shorted to voltage for 2.5 seconds.
B008A 12
The HVCID sensor 2 or 3 signal circuit is shorted to ground for 2.5 seconds.
B008A 39
The HVCID sensor 2 or 3 signal circuit is open for 2.5 seconds.
B008A 3A
The wrong HVCID sensor 2 or 3 is installed.
B008A 73
The SDGM has received invalid serial data from the HVCID sensor, indicating that the HVCID sensor is malfunctioning.
Action Taken When the DTC Sets
* DTCs B008A and B008B are type C DTCs.
* The driver information center (DIC) displays the SERVICE HYBRID SYSTEM message.
Conditions for Clearing the DTC
DTCs B008A and B008B are type C DTCs.
Diagnostic Aids
* DTC B008A 00 may set if the signal circuit is installed into the incorrect terminal of the SDGM connector.
* Corrosion at the HVICD sensor may cause DTC B008A 11, B008A 12, B008A 39, or B008A 73.
* This vehicle does not use crash sensor. Any DTC B008B, except symptom byte 00, do not apply to this vehicle, and can only set if the incorrect software is installed in the SDGM.
Reference Information
Schematic Reference
Data Communication Schematics (Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Drive Motor Generator Control Module Description and Operation (Description and Operation)
Electrical Information Reference
* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Diagnostic Trouble Code Descriptions)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
Circuit/System Verification
Ignition ON, observe the scan tool Hybrid Crash Sensor 2 parameter. The reading should be No Crash.
Circuit/System Testing
DTC B008A 00 or B008B 00
Verify that DTC B008A 00 or B008B 00 is not set.
If the DTC is set, program the SDGM. If the DTC resets, replace the SDGM.
DTC B008A 11, B008A 12, B008A 39, or B008A 73
1. Ignition OFF, disconnect the harness connector at the HVCID sensor.
2. Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 ohm between the low reference circuit terminal 2 and ground.
• If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the SDGM.
3. Ignition ON, verify DTC P008A 39 is set.
• The DTC is not set, test the signal circuit terminal 1 for a short to voltage or a short to ground. If the circuit tests normal, replace the SDGM.
4. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the low reference circuit terminal 2. Verify DTC P008A 12 is set.
• The DTC is not set, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the SDGM.
5. If all circuits test normal, test or replace the HVCID sensor.
B008A 3A
1. Verify the correct HVCID sensor is installed.
• If the correct sensor is not installed, replace the sensor.
2. Verify the SDGM is programmed with the correct calibration.
• If the correct software is not installed, program the SDGM.
3. If all circuits test normal, test or replace the HVCID sensor. If the DTC resets, replace the SDGM.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* High Voltage Circuit Impact Detection Sensor Replacement - Rear (High Voltage Circuit Impact Detection Sensor Replacement)
* Control Module References (Programming and Relearning) - for SDGM replacement, setup, and programming.