1222 Main valve
SELF-DIAGNOSIS FLASHING CODE 1222
Main valve,
- Ignition off.
- Pull plug off controller.
- Check solenoid valve resistance at controller plug. X1 term. 11 -> X1 term. 18
Set value: 2...5 Ohm
- Check solenoid valves and leads for short to ground/short to positive, open circuit and loose contacts as per circuit diagram.
- Check contacts of connectors.
SELF-DIAGNOSIS FLASHING CODE 1112...1222
- Remove solenoid valve relay.
- Check function of valve relay.
- Check ground connection, valve relay. K1 term. 87a -> body ground
Set value: < 0,5 Ohm
- Check voltage supply, valve relay. K1 term. 87 -> body ground
Set value: 10...15 V
- Check lead from valve relay to controller plug. K1 term. 30 -> X1 term. 3, 20
- Controller defective.