The purpose of measuring ISCA resistance is to find if the open circuit is in the component.
Measure resistance of ISCA battery power circuit between open coil circuit.
Probe(+) : ISCA power circuit NO2.
Probe(-) : ISA open signal circuit NO1.
Specification: 20℃(68℉) : 16.5~18.5Ω
Does each resistance indicate continuity circuit?
YES
Thoroughly check for loose,bent or corroded terminals at all connectors in circuit
NO
Open circuit ISCA
Repair as necessary and go to "Verification of Vehicle Repair"