KNOWN INFO                         TEST OPTIONS                REASON FOR QUESTION     3.        POSSIBLE PROBLEMS        VOLTS gage registers in green zone with engine running. Circuit breaker CB40 OK. FRONT BRAKE AIR and REAR BRAKE AIR pressure gages read normal. Air pressure switch OK. YES 2.             KNOWN INFO                         TEST OPTIONS                REASON FOR QUESTION            POSSIBLE PROBLEMS        VOLTS gage registers in green zone with engine running. Circuit breaker CB40 OK. FRONT BRAKE AIR and REAR BRAKE AIR pressure gages read normal. Air pressure switch OK. Faulty start and charging cable assembly. Faulty dashboard cable assembly. Faulty CTIS cable assembly. Faulty manifold valve assembly. Faulty CTIS ECU. YES CAUTION Read CAUTION on following page. CAUTION Read CAUTION on following page. Continuity Test or STE/ICE-R Test #91 Continuity Test or STE/ICE-R Test #91 Is continuity present from connector P84 socket A to ground? If continuity is not present, wire 3032 in start and charging cable assembly is faulty. NO Is continuity present from connector P84 socket B to connector P43 pin 2? If continuity is not present, wire 1790 in start and charging cable assembly is faulty. NO Repair wire 3032 from connector P84 socket A to terminal lug TL85 (para 2-40) or replace start and charging cable assembly (para 7-82). Repair wire 1790 from connector P43 pin 2 to connector P84 socket B (para 2-40) or replace start and charging cable assembly (para 7-82). e82. CENTRAL TIRE INFLATION SYSTEM (CTIS) DOES NOT OPERATE (CONT) TM 9-2320-365-20-1 2-908          Change 1 Faulty start and charging cable assembly. Faulty dashboard cable assembly. Faulty CTIS cable assembly. Faulty manifold valve assembly. Faulty CTIS ECU.