Circuit/System Verification
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
To help avoid personal injury, additional precautions must be taken prior to working on the generator control module or the generator starter. After removing the 36V battery cables from the generator battery, remove both engine wiring harness connectors from the generator control module. Wait at least 5 minutes and then remove the generator control module cover. Verify voltage levels at all 36V, 12V, and 3-phase connections, are less than 3 volts using a DMM before proceeding.
WARNING:
To help avoid personal injury, be careful when working in the vicinity of the generator battery disconnect control module. Internal components will still be live, 36V potential, even when the cover has been opened or removed.
- Using the scan tool verify the hybrid battery pack cooling fan operates and there are no airflow obstructions near the battery pack.
- If the fan does not operate refer to DTC P0A81-P0A83 .
- Observe the scan tool Hybrid Battery 1 Temperature, Hybrid Battery 2 Temperature, Hybrid Battery 3 Temperature, Hybrid Battery 4 Temperature, Hybrid Battery 5 Temperature and Hybrid Battery 6 Temperature parameters in the BECM data list. The temperature sensors should be within 4°C (7.2°F) of each other.
- If any of the temperature sensor readings are not within the specified value, refer to Circuit/System Testing.
- If all sensors are within the specified value after the three hour soak, replace the battery pack.