Diagnostic Test

WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.

ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, record and erase BPCM DTCs.
3. Turn the ignition off. Wait one minute.
4. Turn the ignition on. Wait one minute.
5. With the scan tool, read DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2
  No
  - The condition or conditions that originally set this DTC are not present at this time. Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK THE BATTERY PACK CONTROL MODULE (BPCM) HEATER VALVE CONTROL OUTPUT
1. Turn the ignition off.
2. Disconnect the Battery Heater Valve Solenoid harness connector.
3. Turn the ignition on.
4. With the scan tool, actuate the Battery Heater Valve Control State.
5. Using a 12-volt test light connected to a good chassis ground, check the (H372) Battery Heater Valve Solenoid Control circuit in the Battery Heater Valve Solenoid harness connector.
  NOTE:
  The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
  
  Is the test light illuminated and bright?
  
  Yes
  - Replace the Battery Heater Valve Solenoid in accordance with the Service Information.
  - Perform the BATTERY PACK CONTROL MODULE (BPCM) VERIFICATION TEST. Refer to BPCM VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (H372) HEATER VALVE CONTROL OUTPUT CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the High Voltage Battery Pack C3 low voltage harness connector.
3. Measure the resistance of the (H372) Battery Heater Valve Solenoid Control circuit between the Battery Heater Valve Solenoid harness connector and a good chassis ground.
  Is the resistance above 10k Ohms?
  
  Yes
  - Replace the High Voltage Battery Pack in accordance with the Service Information. Refer to BATTERY, HIGH-VOLTAGE, REMOVAL .
  - Perform the BATTERY PACK CONTROL MODULE (BPCM) VERIFICATION TEST. Refer to BPCM VERIFICATION TEST .
  No
  - Repair the (H372) Battery Heater Valve Solenoid Control circuit for a short to ground.
  - Perform the BATTERY PACK CONTROL MODULE (BPCM) VERIFICATION TEST. Refer to BPCM VERIFICATION TEST .