Immobilizer Unit

Gain access to immobilizer unit. See IMMOBILIZER UNIT under REMOVAL & INSTALLATION. Measure voltage between immobilizer unit terminals. See Figure . Before checking continuity to ground at terminal "C", disconnect immobilizer unit connector. If voltages and continuity check okay, check connectors, wiring and related components. If connectors, wiring and related components check okay, replace immobilizer unit and reprogram. See IMMOBILIZER UNIT under REMOVAL & INSTALLATION and PROGRAMMING.