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HOMESERVICE MANUALSDODGE AND RAM2024PROMASTER 3500 BASE, CUTAWAYREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 25 (BATTERY PACK CONTROL MODULE (BPCM) - DTCS B1CE9-00 TO P0A7E-00)DTC TROUBLESHOOTINGP0668-00 CONTROL MODULE INTERNAL TEMPERATURE SENSOR 1 CIRCUIT LOWDIAGNOSTIC TEST
2024 Dodge and Ram ProMaster 3500 Base, Cutaway

Diagnostic Test

2024 Dodge and Ram ProMaster 3500 Base, CutawaySECTION Diagnostic Test
WARNING: This page is about a different car, the 2024 RAM ProMaster EV. However, it is still accessible from the selected car via links, so may be relevant.
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  VEHICLE HIGH VOLTAGE POWER DOWN  . 

Repair any Low or High Voltage DTCs in BPCM, IDCM, MCPA(B) or EVCU before proceeding and recheck operation. Refer to  DIAGNOSTIC CODE INDEX  . 

NOTE: After any repair, perform the Battery Pack Control Module (BPCM) verification test to verify the repair.
  1. Check for high voltage DTC's in other ECU's.
    1. If high voltage DTC's were found in other ECU's, test and repair the 12 volt system according to the Service Information.
    2. If no problem was found, continue to step 2. 
  2. Check to see if the vehicle has been jump started with a 24 volt system.
    1. If the vehicle has been jump started with a 24 volt system, clear the DTC.
    2. If it was not, continue to step 3. 
  3. Check CAN voltage value in BPCM data and compare to other ECU's.
    1. Does the CAN voltage data reading in the BPCM match the other ECU's? If it does, there is no failure at this time.
    2. If the CAN voltage data does not match other ECU's, replace the BPCM in accordance to the Service Information. Refer to HIGH VOLTAGE BATTERY, REMOVAL AND INSTALLATION .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.