Diagnostic Test

CHECK FOR CHARGING SYSTEM DTCs
NOTE:
If present, diagnose and repair DTC U0141-00 Lost Communication With Body Control Module before proceeding with this diagnostic procedure.
1. Turn the ignition on.
2. Using a scan tool, read Powertrain Control Module (PCM) DTCs.
  Are there any Charging System DTCs set in the PCM?
  
  Yes
  - Perform the appropriate PCM DTC diagnostic procedure. Refer to DTC INDEX .
  No
  - Go To 2
CHECK FOR DTCS IN BCM
1. Using a scan tool, read BCM DTCs.
  Are there any DTCs set in the BCM?
  
  Yes
  - Perform the appropriate BCM DTC diagnostic procedure. Refer to DTC INDEX .
  No
  - Go To 3
CHECK FOR ACTIVE DTC B210C18-BATTERY VOLTAGE INPUT - CIRCUIT BELOW THRESHOLD IN HSM
1. Using a scan tool, read HSM DTCs.
  Is DTC B210C-18-BATTERY VOLTAGE INPUT - CIRCUIT BELOW THRESHOLD active?
  
  Yes
  - Diagnose and repair the DTC.
  No
  - Go To 4
VERIFY THIS DTC IS ACTIVE
NOTE:
- Make sure the Battery is in good condition. Using a suitable Battery Tester, test the Battery before continuing.
- Make sure system voltage is in the normal operating range of approximately 12 to 14 volts before continuing.
- Inspect the vehicle for aftermarket accessories that may exceed the Generator System output.
- Make sure the generator drive belt is in good operating condition.
- Inspect the fuses. If an open fuse is found, use the wire diagram/schematic as a guide, inspect the wiring and connectors for damage.
1. Using a scan tool, record and erase DTCs.
2. Turn the ignition off.
3. Start the engine and let it run for one minute.
4. Using a scan tool, read DTCs.
  Is the DTC active?
  
  Yes
  - Replace the Heated Seat Module (HSM) in accordance with the Service Information. Refer to MODULE, HEATED SEAT (HSM), REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - The conditions that caused this code to set are not present at this time.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .