Diagnostic Test
- CHECK FOR SYSTEM VOLTAGE DTCS IN ALL MODULES WARNING:
On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury.
Read the HIGH-VOLTAGE SAFETY PROCEDURES. Refer to HIGH VOLTAGE SAFETY PROCEDURES .
When the HIGH-VOLTAGE POWER-DOWN PROCEDURE is necessary. Refer to HIGH VOLTAGE POWER DOWN .
Repair any Low or High Voltage DTCs in HCP, BPCM, PCM, or IDCM before proceeding and recheck operation.
- With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
- For future reference, with the scan tool, run and save a Vehicle Scan Report and all related recorded data.
Are there any system voltage high or low DTCs present in any modules?
Yes
- Diagnose and repair the low voltage system or battery issue. Erase DTCs and retest.
- Perform the BATTERY PACK CONTROL MODULE (BPCM) VERIFICATION TEST. Refer to HV VERIFICATION TEST .
No
- Go To Next Step.
- PERFORM THE P0EDD RESET PROCEDURE WITH THE SCAN TOOL
- With the scan tool, BPCM, under Misc Functions tab, perform the P0EDD reset procedure.
Did the P0EDD reset procedure complete successfully?
Yes
- Verify no intermittent HV or low voltage jumper bridge harness connections are present. Repair if necessary and retest.
- Perform the BATTERY PACK CONTROL MODULE (BPCM) VERIFICATION TEST. Refer to HV VERIFICATION TEST .
No
- Replace the Primary and Secondary High Voltage Battery Packs in accordance with the Service Information. Refer to HIGH VOLTAGE BATTERY, REMOVAL AND INSTALLATION .
- Perform the BATTERY PACK CONTROL MODULE (BPCM) VERIFICATION TEST. Refer to HV VERIFICATION TEST .
- With the scan tool, BPCM, under Misc Functions tab, perform the P0EDD reset procedure.