Hybrid/EV Battery Cell Balancing Circuit H

Check these first

• A wiring fault on cell balancing circuit H
• A balancing shunt out of spec on circuit H
• A cell controller that does not drive circuit H
• Corrosion in the cell harness connector at circuit H

What to do next

1. Read cell voltages and look at the circuit H group
2. Command balancing and watch the circuit H response
3. Inspect the circuit H shunt, resistor and wiring
4. Check the cell harness connector at circuit H
5. Service the balancing board if circuit H will not respond
6. Clear the code and retest

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