What it means
The level control system detects a high signal in the accessory inflator switch circuit.
How it works
The level-control system uses the accessory inflator switch circuit to detect a request to operate the inflator. C0700 sets when the circuit signal is higher than expected, which can result from a short to voltage, a faulty switch, or damaged wiring.
Common causes
Most likely first.
- Switch circuit shorted to voltage
- Faulty accessory inflator switch
- Damaged wiring or connector
Symptoms
- Level control warning light or message
- Accessory inflator switch may not work
How to diagnose it
- Check for level-control warnings and confirm whether the accessory inflator switch responds as expected.
- Inspect the inflator switch connector and nearby wiring for loose terminals, corrosion, pin damage, or chafing.
- Use scan-tool data, if available, to observe the accessory inflator switch status while operating the switch.
- Test the switch circuit for a short to voltage and check switch operation using the manufacturer's wiring information.
- If the circuit and switch pass inspection, test the level-control module input according to the manufacturer's procedure.
Common fixes
- Reconnect or clean the accessory inflator switch connector as appropriate.
- Repair wiring that is shorted to voltage or damaged.
- Replace a faulty accessory inflator switch after confirming it fails testing.
- Repair a module connection or input fault confirmed by circuit testing.
Can I keep driving?
This fault may disable the accessory inflator switch without affecting normal driving. Avoid relying on the inflator until repaired, and follow any level-control warnings if the vehicle's ride height changes.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.