This means the control unit is continuously energising the warning light. Possible causes include:
a) Loss of continuity between pin 1 of the module and ground. Check with a multimeter,
b) Battery voltage greater or less than 12 Volts on both sides of SLS relay. Clean SLS relay pins and sockets with contact cleaner lubricant (e.g. SCA Electrical Contact & Parts Cleaner 350g or Contact Cleaner Lubricant Spray Can | Jaycar Electronics etc DO NOT use a water displacement spray) and a wire brush - they are subject to corrosion from spilt coolant. Also check with voltmeter between module attaching screw and i) positive feed at pin 8 of control module connector ii) pin 4 of control module connector iii) Pin 2 harness side of height sensor module with ignition off.
a) Loss of continuity between pin 1 of the module and ground. Check with a multimeter,
b) Battery voltage greater or less than 12 Volts on both sides of SLS relay. Clean SLS relay pins and sockets with contact cleaner lubricant (e.g. SCA Electrical Contact & Parts Cleaner 350g or Contact Cleaner Lubricant Spray Can | Jaycar Electronics etc DO NOT use a water displacement spray) and a wire brush - they are subject to corrosion from spilt coolant. Also check with voltmeter between module attaching screw and i) positive feed at pin 8 of control module connector ii) pin 4 of control module connector iii) Pin 2 harness side of height sensor module with ignition off.